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Car Diesels Questions and Answers - This category contains featured questions as examples. They relate to most vehicles.
Question: 1979 Mercedes 300SD Turbo Diesel_mileage: 103,000. I've never
owned a diesel car before, so I'm not sure what this could be. The other cold
morning, I started the car, let it run for a minute then drove. As soon as
it shifted into 2nd gear, it started screaming - like a high-pitched horn sound
coming through what seemed like the vents into the front of the car. When I slow
down, the noise lowers in tone until I'm in first gear when it stops altogether.
I wasn't bold enough to try a higher speed. I'm afraid to take it to a mechanic
without having some idea first, because I don't know any around where I live. (I
just bought the car a few months ago.)
Answer: Without listening to the high-pitched noise, we can give
you some suggestions of what to look for. First, check the vacuum pump and
also the vacuum hoses. Next, check for loose or faulty fan belts.
Question: 1986 Dodge Ram 318 mileage: 100,000. Hey, I have an 86
Dodge Ram that when you shut it down it diesels. So far, I have put a new
carburetor on it in hopes that that was the problem, but it wasn't. Now I'm
going to check the timing chain, but before I do can you tell me what is wrong with
it?
Answer: Check the ignition timing, idle speed (not to high) and the cooling
system to be sure it is not on the verge of overheating.
Question: 1987 Mercedes 300TD mileage: 230k. Car has
no problem starting but when I turn the key to turn it off the car keeps running.
I have to pop the hood and hit the stop switch.
Answer: Vacuum is used to shut off the fuel to stop the engine.
Check the vacuum hoses for leaks and check for proper operation of the vacuum pump.
Question: 1987 Chevrolet Camaro Mileage: 154,000. What is the problem
when the car continues to run even after the car is shut off and it still shakes
and grumbles?
Answer: It is possible that the idle is set to high. Also, try using
a higher octane grade of gas.
Question: 1988 Suzuki Samurai 1.3 mileage: 160,531. My car is trying
to keep running after I shut the key off. What would be causing this?
Answer: Your problem may be that your idle speed is set too high.
Correcting to the proper specifications, should fix your problem. Also, check
that your car is not overheating. Sometimes, too low octane gas can be the
culprit.
MORE: Diesel questions
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