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84 Mercedes 300D turbo diesel problems with engine it's running after ignition switch is turned off?
Wiki User
∙ 17y ago
Technically, a diesel engine does not need any outside electrical source to keep it running. Injectors are mechanical and keep running until they are forced off, usually by a solenoid. Check the shutoff mechanism to make sure it isn't sticking. This diesel shuts off using vacuum. If your vacuum is low or leaking, the vehicle will not shut off using the key. You have to open the hood and push the SHUT OFF plate near the top of the engine in the fuel linkage. Vacuum leaks are common and will keep the door locks, climate control, and engine shut off from working. The shut off valve, located on the back of the injection pump, can fail. It is vacuum operated and the diaphragm can tear. Vacuum test this valve. If it holds vacuum keep looking for other vacuum leaks, if it leaks replace it.
Wiki User
∙ 17y ago
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A diesel vehicles does not need to be running. A diesel ignition in a Diesel engine comes from compression and not spark.
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153624
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this vehicle is a diesel and does not have a wiring diagram for the ignition circuits as being a diesel it does not have spark ignition
Your Mercedes diesel will not turn off?
There are two vacuum lines on the ignition switch (where you put the key in). Remove the coverings to expose them. Check to see if the lines are loose, clogged, or disconnected.
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Diesel has highest ignition temperature.. So only diesel cant be used in petrol engine
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A diesel engine that is starved for fuel will lose prime. This means that you will be unable to start the engine once it has stalled.
Why diesel doesn't have electric ignition system?
No spark plugs in a diesel.
Mercedes diesel will not turn off?
This happened to me. Remove the coverings from the ignition switch. You will see two vacuum tubes connected to the switch housing. One of them is broken, leaking, or clogged. Replace it.
Spark plugs cause the ignition in Diesel engines?
No, spark plugs do not cause ignition in diesels. The fuel compression causes ignition
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none, use a good fuel additive and change filters regulary you will have no problems.
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this is one of those problems where your tear down the colum and go from there.
Is the 1989 Mercedes 300 sel a diesel engine?
No, it is a six-cylinder gasoline engine. If it were diesel, it would be labeled "300SDL" and make a lot more racket when the engine is running. The 300SEL is a W126 body style and is longer than the 300SE.
