Where is the fuel rail regulator on a Mercedes CDI?
The Mercedes CDI series of diesel engines have an electronically controlled fuel pressure regulator mounted on the end of the fuel distribution rail. This controls, as the name suggests, the fuel rail pressure. It relies on the seal made between a single small O-ring which is backed by a split fibre backing ring.
What is the fuel filler cap on a Mercedes?
Mercedes CDI Injector Bolt and Seal x 4 £16.69 W163 ML 1998-2005 LHD Accelerator Pedal, Complete £28.96 A209/C209 CLK 2003-2009 (See Info) Fuel Filler Cap – Petrol £19.50 W245 B Class 2005-2012 (See Info) Fuel Filler Cap – Petrol £19.50
What kind of fuel system does a Mercedes R172 have?
R172 SLK 2011-2018 (250CDI/250D) Fuel Filler Cap £18.98 W639 V Class/Vito 2003-2014 (CDI) Diesel Injector £190.32 C215 CL 1999-2006 (See description) Fuel Filler Cap £30.25 W220 S Class 1998-2005 (See description) Fuel Filler Cap £30.25
Where can I buy a Mercedes fuel system?
Fuel System : Mercedes & Smart Parts at PartsforMercedes-Benz.com A range of genuine Mercedes and Orginal Equipment quality fuel system components. If the part you are looking for is not listed here, please e-mail us for a price and delivery time. All at discounted prices. JavaScript seems to be disabled in your browser.
Can a flexible fuel line replace a hard line?
Do not replace long runs of hard line with flexible fuel hose. Even the best fuel injection, low-permeation fuel line will have some amount of fuel vapor loss. Also, road debris can damage the line.
The Mercedes CDI series of diesel engines have an electronically controlled fuel pressure regulator mounted on the end of the fuel distribution rail. This controls, as the name suggests, the fuel rail pressure. It relies on the seal made between a single small O-ring which is backed by a split fibre backing ring.
Where can I get a new fuel line?
Lines are available from aftermarket and new car dealer sources. This can be the most expensive and labor intensive option, but this option is the longest lasting repair, returns the vehicle to like-new condition and prevents a customer from coming back with another leak. This is not an option on all vehicles. Option 2: Bend your own lines.
What can I use to replace metal fuel lines?
One option for replacing metal fuel lines is with a nylon tubing and specific fittings. Nylon tubing can be used for an entire length of fuel line or just a section. This option can be a cost-effective and time-efficient repair when pre-bent lines are not available.
Why does CDI not start at sufficient pressure?
A CDI does not start injection before the rail pressure is sufficient. Do you mean you actually disassembled the top of the fuel injector? Perhaps you did make it leak and the rail does not reach sufficient pressure.
Why is my fuel rail not working properly?
Often the problem becomes more noticeable once the engine is warm and poor starting results. Usual symptoms for this can be laboured starting when warm and occasional non starting, if the fuel rail cannot maintain the required minimum of approximately 300 bar at crank to allow the injectors to fire.
Can a fuel injector deprive the fuel rail of pressure?
It is important to note that a failing fuel injector can also deprive the fuel rail of its operating pressure.
What to do if your diesel fuel line is bleeding air?
Here are the steps to take in bleeding air from a diesel fuel system: 1. Turn off fuel valve. 2. Clean outside of filter housing. 3. Install new filter element and new gaskets. A little oil on the gasket will aid a tight seal. 4. I’d suggest that you fill a spin-on filter with clean fuel before installation. 5.
What happens when Mercedes diesel engine is not running?
As Mercedes DPF traps and holds soot, with time it reaches a point when it needs to be ‘emptied out’. This is done by regeneration. During this automated process, engine computer rises exhaust gasses temperature over 630°C. This burns up soot particles. However, if the engine is not running correctly automatic regeneration will not be started.
What’s the problem with the Mercedes diesel injector?
Having rectified many ‘chuffing’ injectors and dealt with the famed ‘black-death’ on many sprinter engines and its close derivatives used across the complete range of Mercedes Diesel vehicles, I can honestly say that the hold down mechanism used to secure the injector in the head is definitely the engines number one Achilles heel.
What kind of fuel line does Mercedes use?
FI-Plus Fuel Injection Hose by Thermoid®. Standard Pack: Carton. SAE30R9; 275°F Operating Temp. Coil. Designed for the extremely high temperatures generated by today’s fuel injected engines. Temperature range of -29 to +275 degrees F… Fuel Filler Hose by Genuine®.
When to replace a fuel return line in a Mercedes?
Brittle, old injector return lines can leave you stranded when they split and leak fuel all over your engine. You’ll need to keep an even closer eye on them if you run biodiesel. If you use 99% biodiesel they may only last a year. Biodiesel literally dissolves rubber! Learn to replace them now, and keep some spare in your trunk for emergencies.
Here are the steps to take in bleeding air from a diesel fuel system: 1. Turn off fuel valve. 2. Clean outside of filter housing. 3. Install new filter element and new gaskets. A little oil on the gasket will aid a tight seal. 4. I’d suggest that you fill a spin-on filter with clean fuel before installation. 5.
Where can I get a replacement fuel line?
Designed as a direct-fit replacement of your worn-out or malfunctioning part, it will provide easy, no-hassle… Fuel Return Line by Genuine®. If your fuel system parts are in need of repair, don’t compromise the performance and safety of your car with suspect, off-brand replacement parts from the local auto parts chain store.
What causes poor starting times on a 320cdi?
Fuel lines for mine came to about £45 plus the fitting. Not sure if the 320 has the same issue but on my, and many other 220cdi and 270cdi engines, the fuel lines (actually the seals) get brittle with age, start to leak a little air and cause longer starting times as air bubbles form. This gets worse in cold weather. Click to expand…
Can a Mercedes-Benz 320cdi V6 CDI fail?
The v6 cdi’s do have lower compression ratio, so it’s ok if one or two plugs fail but when there is no preheat system starting is a lot harder. The later cdi four and five fuel systems up until now have given very little trouble with hard starting via fuel system pressure loss
Why are the fuel lines on my Mercedes 320 so bad?
Fuel lines for mine came to about £45 plus the fitting. Not sure if the 320 has the same issue but on my, and many other 220cdi and 270cdi engines, the fuel lines (actually the seals) get brittle with age, start to leak a little air and cause longer starting times as air bubbles form. This gets worse in cold weather.
What should the fuel pressure be on a Mercedes Benz?
Try starting the motor and get a fuel pressure reading. As you can see from our video, the fuel pressure in our case was ranging between 54-56 PSI which is normal. At idle we were getting about 55 PSI with slight fluctuation (+/-2 PSI) when revving up the engine.
How to troubleshoot a Mercedes Benz fuel pump problem?
Troubleshooting a bad fuel pump problem on a Mercedes-Benz is easy. This is a job where you need to be extremely careful because you will work near fuel and there is always the risk of fire. It is recommended that you empty the tank or have the fuel tank near empty when you replace the fuel pump.
What should the pressure be on a fuel rail?
Usual symptoms for this can be laboured starting when warm and occasional non starting, if the fuel rail cannot maintain the required minimum of approximately 300 bar at crank to allow the injectors to fire. If it is possible to monitor rail pressure using Live-Data, you may see the rail pressure dancing between 266 and 550 bar.
Try starting the motor and get a fuel pressure reading. As you can see from our video, the fuel pressure in our case was ranging between 54-56 PSI which is normal. At idle we were getting about 55 PSI with slight fluctuation (+/-2 PSI) when revving up the engine.
What causes a Mercedes Benz fuel pump to fail?
Typically problems related to the fuel pump and fuel pressure include: Under normal operation conditions, the fuel pump provides a constant flow of fuel. A failing fuel pump typically delivers too little fuel from the gas tank or in certain cases too much. Mercedes-Benz cars use an electrical fuel pump to pump the fuel to the fuel injectors.
What should I do if my fuel pump is not working?
The first thing that you should do is check the fuel pump fuse. If the fuse is good, you will need to test the fuel pressure. If you performed a fuel pressure test and find out that the fuel pump is not generating fuel pressure, don’t rush into the conclusion that the fuel pump is bad. Perform the following test before you replace the fuel pump.
What causes lack of acceleration in a Mercedes?
Symptoms include lack of acceleration when you press the gas pedal or vehicle trying to stall. The fuel pump is not providing the required fuel pressure to keep up with the engine demands. Mercedes may jerk during acceleration from a stop. Happen when you hit the gas pedal to the floor.
How to check a CDI fuel pump connection?
Check that the pipes are connected correctly as above, make sure that there are no leaks of fuel from the injectors. Use some clear plastic fuel pipe for the leak off hoses on the top of the injectors so that you can see if there is any fuel and if so if there are any air bubbles
What are the relays on a Mercedes Benz Vito?
CDI, oil sensor, fuel temp sensor,CMP sensor, water temp sensor,rail pressure sensor,Crank position sensor,4 injectors, high pressure pump shut off valve, rail pressure control valve, fuel shut off valve. The only other relays are to do with lights ect ect More Fuel Problems…
Can a Mercedes-Benz Vito CDI 110 start?
There is no way of priming the van and it is not self priming, as long as the diesel filter is full of fuel the van will start. Is the EDC light on ?. Is the battery good ?. Have you read the codes with a scanner? if so what are they. 1 x 190e, 2 x vito cdi 110 many spares…. still the vito wont start…..