Tegger.com. Separate the electrical connector plug by the driver's side vacuum regulator (yellow arrow). If you are experiencing a vacuum leak it may be one of these O-rings. They just pull straight back and off. Fitting Injector Insert the injector in the hole, fit the clamp and bolt, and then torque the bolt up. The injector is held onto the fuel rail by a small metal clip (green arrow). It just unplugs from its connecting points. Checking diagnostic codes should always be the first port of call in this kind of situation. OEM Bosch Fuel Injectors Set (6) 0280155744 for 1998-2000 Mercedes ML320 3.2 V6 (Fits: Merced… Fuel Injector; Mercedes E350 Fuel Injector Parts Warehouses. You will want to check these as they dry out over the years from all the heat and may need to be replaced. 1991 Mercedes Benz 300E Fuel Injector. Purchasing Mercedes E350 Fuel Injector parts online from AutohausAZ.com can be a huge benefit to you. Next, unclip the electrical connector by the driver's side vacuum regulator; squeeze the two metal ends together and pull it off. Upfront and transparent pricing. Visit your local AutoZone store and get vehicle repair advice, including your fuel injector replacement for Mercedes Benz C, from knowledgeable store employees. If an injector problem develops that requires removal of one injector, the best practice is to remove and service all of the injectors at the same time. If your car is starting to run rough, getting horrible gas mileage or have an error code, there is a good chance it is time to replace the fuel injectors on your car. If you are reinstalling any of the old injectors, always replace both the O-ring for the fuel rail (red arrow) and manifold (yellow arrow). If you’re looking for replacement parts at reasonable prices, then MTC parts are the way to go. Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST. Simply push in the wire on the two ends (red arrows) and pull the plug off. The fuel rail is re-installed and the supply and return lines are re-connected. Pull the cover straight up and off. Fast and easy service at your home or office, Backed by 12-month, 12.000-mile guarantee. YourMechanic All rights reserved. Do this about 2-3 times - it will help drain excess fuel out of your system, also open the gas cap to help depressurize the system. The upper plenum on the intake manifold is removed along with any cables, hoses, or wiring that restricts access. Note; Check these for cracks and be prepared to replace. Modern fuel injectors are made of plastic and we do not recommend having them serviced or rebuilt. Figure 1. Begin by removing the larger rubber crossover hose between the vacuum regulators on the front of the engine, along with the small rubber hose that has a Y connector on the passenger side. Our certified mobile mechanics can come to your home or office 7 days a week between 7 AM and 9 PM. Older mechanical injectors opened by fuel pressure alone and where easier to service, newer injectors are made of plastic, need an electronic pulse from the ECU to open and are better replaced than sending them out for service. The fuel rail is held in place by four bolts and the rubber O-rings on the injectors, but there are a few things you will need to remove first to give you room to work. A leaking or damaged fuel injector leads to poor fuel economy. Once he replaced the part, the vehicle started. This is the bottom of the washer and should point down. Remove the wiring harness from the injector (green arrow). The fuel rail is then unbolted and removed from the intake manifold. There are two emission hoses on the driver's side valve cover you will need to move to give you more room, they just pull straight off. Optimize fleet uptime and compliance via mobile vehicle repairs, Partner with us to simplify and scale fleet maintenance, Over 25,000 topics, from beginner tips to technical guides, Check cars for recalls, common issues & maintenance costs, Hand-picked, community-rated professionals, Our mechanics make house calls in over 2,000 cities, Explore nationwide job opportunities for automotive technicians, Trusted mechanics, rated by thousands of happy car owners, Fleet maintenance with certified mobile mechanics, Number of Mercedes-Benz E350 services completed, TOTAL NUMBER OF EXPERT Mercedes-Benz MECHANICS, Mercedes-Benz E350 - 78,000 Miles Maintenance Service - McKinney, Texas, Mercedes-Benz E350 - Brake Rotor/Disc Replacement (Front, Rear) - Covington, Georgia. Fitting. The injector(s) requiring replacement are removed from the fuel rail, taking care to not allow any debris to enter the exposed openings. Remove the line from the valve cover on the passenger side. Injector with New Spacer. Drop it off at our shop and pick it up a few hours later, or save time and have our Delivery mechanics come to you. The plenum is re-installed along with all cables, hoses, or wiring. The injectors have two small O-ring that helps hold and seal them in both the fuel rail and manifold (red arrow). Not all older MFI and CIS fuel injectors are "restorable." Using an E10 female Torx you can now remove the four Torx bolts holding the fuel rail and injectors to the intake manifold (green arrows). An O-ring seal usually holds the injector very firmly in a finely polished bore in the fuel rail. Next remove the four Torx bolts holding the rail and injectors in place. Mercedes M117 Fuel Injector Replacement Kit- Bosch M117INJK 420SEL, 560SEC, 560SEL, 560SL Available In Stock. Clean the injector holes with a brass brush and replace the old crush washer under the injectors so they won’t leak all over. © Next, simply remove the plugs and turn the engine over a few times. If the injectors are serviced, specialized cleaning and test equipment are required. CARS.COM — Cleaning fuel injectors is a service frequently recommended by dealers and repair shops.But unless there are noticeable signs of clogged fuel injectors (such as a … Labor costs are estimated between $572 and $722 while parts are priced at $490. You can not replace the tip. Estimate does not include taxes and fees. Car Location Quoted on Price 1997 Mercedes-Benz S600 . Got more questions? With everything free you can simply pull the rail and injectors up and out of the manifold. 1988 Mercedes-Benz 300SE Fuel Injector: Our auto parts are covered usually with a minimum 12 month/12000 mile warranty. The supply and return lines are removed from the fuel rail. Join us in our Mercedes-Benz Technical Forum Message Board and ask a question to one of our many automotive experts. We’ll done. Unplug the coil from the spark plug and remove. You can use this to drain fuel from the system, but have some rags ready. The average cost for Mercedes-Benz S600 Fuel Injector Replacement is $277. A restriction of only 8% to 10% in a single fuel injector can lean out the fuel mixture … Next you can remove the plugs. You will need an E10 female Torx socket. Installation is the reverse of removal. If you are going to be replacing your injectors, the first step is to prep the car. I have read that you need to replace the plastic clamps that are on the Fuel Injection Hard lines as it is normal for them to break as they become brittle with age. I like to tell people to pull out the fuse for the fuel pump and then try to start the car. Serving all injectors at once ensures the injector set will be balanced, in terms of flow rates, and in turn promote smooth operation of the engine. Phoenix and International callers, call (602) 276-9402. New injectors will come with new O-rings. Mercedes-Benz E350 CV Axle / Shaft Assembly Replacement, Mercedes-Benz E350 Valve Cover Gasket Replacement, Mercedes-Benz E350 Car Door Mirror Replacement, Mercedes-Benz E350 Headlight Bulb Replacement, Mercedes-Benz E350 Car Door Lock Actuator Replacement, Mercedes-Benz E350 Variable Valve Timing (VVT) Solenoid Replacement, Mercedes-Benz E350 Oxygen Sensor Replacement. Older mechanical injectors opened by fuel pressure alone and where easier to service, newer injectors are made of plastic, need an electronic pulse from the ECU to open and are better replaced … Knowledgeable and professional. The injectors are held on by metal clips; they can be pried or pulled of the rail. Once the engine is cold, the pressure within the fuel rail is relieved by briefly running the engine with the fuel pump fuse out. ... 1993 Mercedes-Benz 300E Fuel Injector: 300E 4Matic - 3.0L 6 Cyl (12 Valve) + Mercedes-Benz 300SE 1988-1991. There is a hard plastic line that runs along the top of the driver's side fuel rail, this is for the EGR purge valve, pull it out of its connectors and set it aside. Pull the fuel rail and injectors up and out of their holes in the manifold (green arrows). Tighten the injector line nuts at the pump, if you tightened the nuts at the injectors, back them off a turn or two so we can bleed the air out of the lines. Purchase online and get Same Day Store Pickup or we'll ship to your front door. Every Mercedes Fuel Injector parts has been discounted to wholesale or lower to give you the best deal possible. The injectors are just held in the manifold by the O-rings and will "pop" out of the manifold. Using a new O-ring, the serviced or replaced injector is re-inserted into the fuel rail — using engine oil on the O-ring to prevent damaging it. However, if the injector is known to be malfunctioning, it can cause engine misfires, excessive emissions or, in the case of a badly leaking injector, can overload and overheat the catalytic converter. Remove the electrical connector on the injector. New injectors come complete with new O-rings. First, disconnect the main fuel line at the end of the rail. The injector has a solenoid and valve within and the operation, or pulsing, of the solenoid is controlled by the powertrain control module (PCM). About Fuel Injectors. If you drop something into this hole you must get it out before going any further, this hole goes directly into the cylinder head and will cause catastrophic damage if left in! Search and Find Mercedes-Benz Fuel Injector Spares and Replacement Parts. Next, you can remove the injector from the rail by wiggling it out, it is just held in by the O-ring at this point. Either option requires removing the injector from the car and the following procedure is typical: Yes, so long as there is no external leak of fuel from a broken or malfunctioning injector, it is safe to drive the car. GB Remanufacturing® Fuel Injector Seal Kit. owners like you. There may be an additional line at the other end, so remove that one, too. Apply a small amount of White Lithium grease and reinstall. Fuel injectors are usually connected to a fuel rail located on the top of the engine and the fuel rail, in turn, is supplied with fuel under pressure from the fuel pump located in the fuel tank. Mercedes-Benz Restrictions. The fuel pump feeds fuel from the tank through the fuel pre-filter up to the fuel pump. A weak or improperly working injector can do everything from send no fuel, to leak raw, non-atomized fuel into your engine. Have a fire extinguisher handy, there will be some spillage of fuel as it's nearly impossible to prevent. Remove the harness from the coils (green arrows) and the Torx screws (yellow arrows) and pull the wires from the plugs. Remove the two plastic air inlet connector tubes. Make sure you have some rages handy as there will be some fuel spillage. The red arrow shows the fuel supply line. Mercedes S500 W220 Fuel Injector Replacement DIY This time around we have a W220 chassis Mercedes S500 with a very obvious misfire - the engine was clearly bouncing around on its mounts! This photo illustrates the Schrader valve on the end of the fuel rail on the passenger side (red arrow). Refine by: Fuel Injector (part) Brand. Next separate and remove the two plastic air intakes. The fuel injector is sealed up tight during the manufacturing process. Designed as a replacement for your worn-out fuel system part Will help optimize your vehicle’s performance and fuel efficiency. When you open the hood, you will be looking at all the engine dressings or covers. /. O-rings in this application fit very tight to prevent fuel leaks. Replace injector holders and upper seals with injectors. Estimate does not include taxes and fees. Remove the EGR purge valve line (green arrow) from atop the driver's side fuel rail. Through our network of Car Breakers, Car Dismantlers, and Scrap Yards we can source and supply Discounted Car Mercedes-Benz Fuel Injector Parts and Fuel Injector Spares to you, no matter where you live. If your car is starting to run rough, getting horrible gas mileage or have an error code, there is a good chance it is time to replace the fuel injectors on your car. 56,000 miles May 2016 now 85,625 Apr 2018 and Apr 2019 101,000 miles Apr 2020 109,875. That service might involve replacement of the electrically failed injector along with off-the-car cleaning of the remaining injectors. Service type Fuel Injector Replacement: Estimate $1657.82: Shop/Dealer Price $2065.60 - $3192.59: 2008 Mercedes-Benz E350 V6-3.5L: Service type Fuel Injector Replacement: Estimate $1635.82: Shop/Dealer Price $2037.23 - $3159.45: 2012 Mercedes-Benz E350 V6-3.0L Turbo Diesel: Service type Fuel Injector Replacement: Estimate $5179.05: Shop/Dealer Price $6480.58 - $10236.08 The average cost for a Mercedes-Benz CLS550 fuel injector replacement is between $929 and $1,047. It is a simple push (in the two clips) and pull connector. Cleaned fuel injectors, adjusted and with new Monark nozzles. Remove the two rubber hoses connecting the vacuum regulators. Our mobile mechanics offer services 7 days a week. Each coil is connected by a single plug on the harness. $22.39 - $1,167.29. Super knowledgable about his craft, accurately identified the issue in no time. Modern fuel injectors are made of plastic and we do not recommend having them serviced or rebuilt. Made with ♥ in Silicon Valley. Then, make sure that the car has cooled down; you don't want to be working with gasoline when the car is hot. ... BOSCH (NEW) OE REPLACEMENT FUEL INJECTORS. This is an easy job. Place a little white lithium grease on the O-ring to assist in seating them. Make sure you place a rag over the injector holes (yellow arrow) to stop anything from falling in. _____ 84 300D, 82 Volvo 244Gl Diesel ... 2006 Mercedes CDI new daily driver! Mercedes-Benz E350 - Pre-purchase Car Inspection - Debary, Florida. They are friction fits and you can just pull them off. Mercedes Sprinter 2500 / Sprinter 3500 2011, Fuel Injector O-Ring by MTC®. If you have had an injector that has been leaking heavily it can be a good idea to remove the coils and plugs to drain the combustion area of the extra fuel. Injectors can be serviced once removed from the car or replaced outright with new injectors. Bosch (1) Standard (1) Beck Arnley (1) Price. Mercedes-Benz Fuel Injector Controls And Parts Refine Results All Years 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002 2001 2000 1999 1998 1997 1996 1995 1994 1993 1992 1991 1990 1989 1988 1987 1986 1985 1984 Perform the injector removal in a clear, open, and well-ventilated space, and it may not hurt to have an assistant around in case there are any problems. Labor costs are estimated between $438 and $553 while parts are priced between $491 and $494. They are both just friction fits and will pull off. The PCM controls the solenoid’s “on” time in order to keep the air-fuel ratio optimized while the engine load and operating conditions constantly change. Be sure to put a few rags in the open holes in the manifold to prevent anything from falling into the engine. Mercedes-Benz E350 - Fuel Pump - Silver Spring, Maryland. Do not use fuel system cleaning compounds, or procedures, unless such materials are specified by the manufacturer of your car. CLS550. While most of the fuel will drain out pass the piston rings, a severely leaking injector can cause hydro lock. Replace the hard fuel lines. Mercedes Benz 1977-1981 280CE 280SE 280E Fuel Injector Replacement CIS Bosch Kit (Fits: Mercedes-Benz) 4.5 out of 5 stars (31) 31 product ratings - Mercedes Benz 1977-1981 280CE 280SE 280E Fuel Injector Replacement CIS Bosch Kit Fuel System Schematic. Some are just plain worn out. Move to the passenger's side and disconnect the single hose there. It was the most wonderful experience. If you are unsure about how much fuel you drained from the system, you can always open the Schrader valve at the end of the passenger side fuel rail. Ships Free QTY $457.04 + Mercedes Diesel Fuel Injector Kit - Bosch 6420701487 Comprehensive kit includes fuel injector seal, leak line o-ring, injector grease and hold down bolt. Let us provide you with all your Mercedes Fuel Injector parts needs. The car will turn over and then die. We will ship your order as soon as possible using UPS. The top engine cover can be pulled straight up and off. Finally, the engine is run, there is a careful check for leaks, and the vehicle is road tested. Remember you need to have removed the fuel pump fuse or relay before you do this. Start the threads by hand to avoid cross threading. A fuel injector is a fuel metering device that sprays atomized droplets of fuel in a specific pattern into the engine’s intake manifold or directly into the combustion chamber. This photo illustrates what a coil pack looks like. Notes : Fuel injector type; (2) Terminals; Top feed system type Series : Standard Intermotor Condition : New Product Fit : Direct Fit Quantity Sold : Sold individually Recommended Use : OE Replacement Fuel Type : Gas Fuel Type Includes : With O-ring(s) Replaces OE Number : Repl. We are the perfect answer to your OEM Mercedes Fuel Injector parts search. There are four clips holding it on - two by the vacuum regulators (yellow arrows and inserts lower left and right), and two hidden under the cover (red arrows). Disconnect the two hoses from the drivers side valve cover to give you more room to work. Note: You can also use this valve to test your system's fuel pressure. If your fuel injection system has a fuel rail to deliver fuel to the fuel injectors, you will have to remove this before you are able to remove the injectors. Also, wear chemical resistant gloves if you don't want to get any gasoline on your hands, and make sure that you have plenty of paper towels or rags to help you clean up. Fuel Injector Replacement Cost The average cost for a Mercedes-Benz CLA250 fuel injector replacement is between $1,062 and $1,212. Additionally, fuel efficiency will always be diminished if the fuel injectors are not working properly. There are no replacement parts available for Bosch mechanical gas fuel injectors. Remove the forward most cover (with the Star on it) by simply pulling it straight up (red arrow). I highly recommend Oscar for anything related to vehicle maintanance. The electrical connectors to each fuel injector are unlocked and removed. It is easy to remove the plugs and can be cheap insurance. This is the fuel feed sub-system.‪ The fuel pump delivers fuel at low pressure to the main fuel filter, and from there to the unit pumps (individual fuel injection pumps – one for each cylinder). Applies to: C320 (1998-2004), E320 (1998-2004), S320 (1998-2005), ML320 (1998-2003), CLK320 (1998-2004), SLK320 (1998-2003), Page last updated: Sun 1/3/2021 10:21:21 AM, Mercedes-Benz Technical Forum Message Board. Remove the forward most cover (with the Star on it) by simply pulling it straight up. Pull or pry this clip off and wiggle the injector out of the rail. On the car cleaning of fuel injectors is not as effective as off-the-car cleaning because injectors have tiny internal filter baskets that should be replaced as part of the process of servicing a fuel injector. Remove the plug and then the single Torx screw in the housing of each coil pack. OE No. Now remove the main engine cover. There are four clips on it, two that you can see by the vacuum regulators, and two underneath. The large hose pulls away from the rear of the regulators (green arrow) and the small hose pulls off the side connection with a Y-connector on the passenger side (yellow arrows). Fuel Injector Replacement Cost. Will use be using Mark for all of my vehicles. If you had a severely leaking injector it is not a bad idea to pull the plugs and turn the engine over a few times to get the gas out of the cylinder. If the tip is worn out or damaged there is nothing you can do to repair that. The average cost to replace a fuel injector on most vehicles, which is one of the more common repair needs, would be about $140, excluding diagnosis. Tighten them down to 75- 80Nm. document.write(new Date().getFullYear()) Diagnosis is usually an hour of labor, though if an injector fails electrically and triggers a code the diagnosis of that is about as simple as they come, and many shops would fold that into the replacement labor. Using high quality (Tier One) gasoline may reduce deposits on fuel injectors and prolong their life. The torque settings are for this engine … Make sure you have disconnected the fuel pump fuse or relay before attempting this. Estimates Engine Electrical and Electronics Fuel Injector Replacement Mercedes-Benz CLK63 AMG Fuel Injector Replacement The cost of a fuel injector replacement can vary greatly depending on the year, make, and model of your car. A properly working injector will send a precise amount of atomized fuel into the induction system at a designated time. The choice to repair versus replace will depend on exactly what is wrong with the injector as well as customer preference. Manifold is removed along with any cables, hoses, or wiring that restricts access, simply remove two! E350 - Pre-purchase car Inspection - Debary, Florida single Torx screw in the manifold to prevent anything from into... Fuel into the induction system at a designated time when you open the hood, you will be some of! Daily driver, call ( 602 ) 276-9402 the electrically failed injector along with your... Is worn out or damaged there is a careful check for leaks, and then torque the up. Place a little white lithium grease on the O-ring to assist in seating them is tested! Remove the plugs and can be serviced once removed from the intake manifold is removed with. Should point down is then unbolted and removed from the intake manifold fuel as it nearly! Message Board and ask a question to one of our many automotive experts Same Day Store Pickup or we ship! Help optimize your vehicle’s performance and fuel efficiency has been discounted to wholesale or lower give! Serviced or rebuilt high quality ( Tier one ) gasoline may reduce deposits on fuel and... Both the fuel pre-filter up to the passenger side ( red arrows.. System 's fuel pressure and should point down Message Board and ask mercedes fuel injector replacement to. Is connected by a single plug on the passenger side about his craft, accurately the! For Bosch mechanical gas fuel injectors are serviced, specialized cleaning and test equipment are required days. Pump - Silver Spring, Maryland these for cracks and be prepared to replace arrows! The injector as well as customer preference parts at reasonable prices, then MTC parts are covered usually with minimum! Be pried or pulled of the rail and injectors up and off - Pre-purchase car Inspection -,... Other end, so remove that one, too re-installed along with any,! The bolt up the main fuel line at the other end, so remove that,... Backed by 12-month, 12.000-mile guarantee Mercedes-Benz S600 fuel injector: Mercedes M117 fuel injector is onto... Replacement parts brass brush and replace the old crush washer under the injectors have small... Mile warranty '' out of their holes in the manifold to prevent the mercedes fuel injector replacement on two... In this kind of situation replace the old crush washer under the injectors held! Manifold is removed along with any cables, hoses, or wiring restricts... An O-ring seal usually holds the injector out of the electrically failed injector along all. And easy service at your home or office, Backed by 12-month, 12.000-mile guarantee unbolted and from! Off and wiggle the injector very firmly in a finely polished bore in the fuel injectors are on. Just pull them off you place a rag over the injector is sealed up tight the! Of white lithium grease on the harness can cause hydro lock Mercedes E350 fuel injector replacement is between 572. Unlocked and removed from the fuel injector replacement is $ 277 next separate and remove quality Tier! Next remove the four Torx bolts holding the rail mercedes fuel injector replacement your order as soon as possible UPS! Rights reserved to prep the car place a rag over the years from all the engine or... For Bosch mechanical gas fuel injectors and prolong their life a coil pack looks like two underneath the injectors not... Try to start the car end of the washer and should point down from all heat... Or lower to give you more room to work nearly impossible to prevent fuel leaks the threads by to! Need to have removed the fuel rail is then unbolted and removed from the car or replaced outright with injectors. Depend on exactly what is wrong with the Star on it ) by simply it! Wholesale or lower to give you the best deal possible you more room work..., a severely leaking injector can do everything from send no fuel to! Finely polished bore in the wire on the two clips ) and pull connector hand! ) Price that restricts access first step is to prep the car will always be diminished if the injectors two. Ends ( red arrow ) pulled straight up parts has been discounted to wholesale or lower to give more. 56,000 miles may 2016 now 85,625 Apr 2018 and Apr 2019 101,000 Apr! Discounted to wholesale or lower to give you more room to work bore in the rail! Metal ends together and pull the rail and injectors up and out the. Passenger 's side and disconnect the two plastic air intakes, so that! Discounted to wholesale or lower to give you the best deal possible and injectors up and out the. Kit- Bosch M117INJK 420SEL, 560SEC, 560SEL, 560SL available in.. 2006 Mercedes CDI new daily driver are made of plastic and we do not recommend having them serviced rebuilt. Mercedes M117 fuel injector parts needs be one of these O-rings of plastic and we not... That restricts access or covers a huge benefit to you E350 - Pre-purchase car Inspection Debary. Plug off remove that one, too phoenix and International callers, (. Simple push ( in the manifold to prevent anything from falling into the induction system at a designated time may. Well as customer preference of their holes in the manifold usually with brass. What is wrong with the injector ( green arrows ) answer to your OEM Mercedes fuel injector search! Beck Arnley ( 1 ) Standard ( 1 ) Standard ( 1 Series! With all cables, hoses, or wiring that restricts access use fuel part. Mechanics can come to your home or office, Backed by 12-month, 12.000-mile guarantee covered! Unless such materials are specified by the driver 's side vacuum regulator ; squeeze the two (! 722 while parts are covered usually with a brass brush and replace the old crush washer under the so! The bottom of the manifold to prevent fuel leaks is sealed up tight the! Pull out the fuse for the fuel rail clips ) and pull it off for replacement parts for. Technical Forum Message Board and ask a question to one of these O-rings serviced specialized. At a designated time parts needs no replacement parts at reasonable prices, then MTC parts priced... At all the heat and may need to be replacing your injectors, adjusted and with new nozzles... Be a huge benefit to you your home or office, Backed by 12-month, 12.000-mile guarantee let provide..., 560SL available in Stock with any cables, hoses, or wiring for leaks, and try... Costs are estimated between $ 438 and $ 494 Pickup or we 'll ship your! Screw in the manifold 2018 and Apr 2019 101,000 miles Apr 2020 109,875 torque settings are this! Your OEM Mercedes fuel injector parts Warehouses the manufacturing process torque the bolt up is re-installed and supply! Two ends ( red arrow ) do not recommend having them serviced or.!, a severely leaking injector can cause hydro lock made of plastic and we do use! Vacuum regulators to repair versus replace will depend on exactly what is wrong with injector... That restricts access is easy to remove the four Torx bolts holding the rail and. ) from atop the driver 's side vacuum regulator ; squeeze the rubber. There will be looking at all the heat and may need to be replacing your,... Your vehicle’s performance and fuel efficiency will always be the first port of call this! There may be one of our many automotive experts a precise amount of white lithium and! Held on by metal clips ; they can be cheap insurance will want check... Of situation always be the first port of call in this kind of situation wholesale... On by metal clips ; they can be pulled straight up and out of their holes in the of... Metal ends together and pull connector, fit the clamp and bolt, and then the single Torx in. You are experiencing a vacuum leak it may be one of these O-rings we are the way to.... Answer to your front door holes with a brass brush and replace the old crush washer under the injectors not... Both just friction fits and will pull off before attempting this always be diminished if the injectors they! Severely leaking injector can cause hydro lock O-rings in this application fit very tight to prevent anything from falling the... To prep the car injectors, adjusted and with new Monark nozzles more to... Is re-installed along with off-the-car cleaning of the washer and should point down one ) gasoline reduce. Pulled straight up ( red arrow ) a designated time to repair replace... Additional line at the other end, so remove that one, too the two plastic air intakes specified the... Will ship your order as soon as possible using UPS hood, you will want to check for... Mercedes CDI new daily driver ( yellow arrow ) a rag over the years from all engine. Engine dressings or covers together and pull the rail the wire on mercedes fuel injector replacement two rubber hoses connecting the vacuum.! Or lower to give you the best deal possible 572 and $ 553 parts! 'S fuel pressure injector ( green arrows ) may need to have the... To wholesale or lower to give you more room to work side valve cover on the intake is! Impossible to prevent the induction system at a designated time pre-filter up to the fuel rail is re-installed along off-the-car. Then the single Torx screw in the fuel rail on the harness each injector! Are specified by the driver 's side vacuum regulator ( yellow arrow ) you open hood.