Can gas engines run away?
The runaway is when the engine draws extra fuel from unintended sources, and starts over-speeding past the redline to higher and higher speeds, sometimes getting up to 10 times the engines rated speed, until it is destroyed by mechanical failure or seizure due to lack of lubrication.
What happens when you turn off the engine on a Mercedes?
When you turn the key off on your Mercedes diesel, you may have noticed that the engine will not quit immediately. In some cases it may even keep running a second or two after you have turned the key to the off position before it finally quits.
Where is the vacuum valve on a Mercedes 300D?
In all Mercedes diesel engines from the first 300D in 1975 up to the mid 1990’s, vacuum (suction) is used to turn the engine off – not electricity! In simple terms – there is a valve mounted on the rear or side of the diesel fuel injection pump.
How do you change the shutoff valve on a Mercedes?
So out of the car you go and lift the hood to depress the stop lever. That whole operation is a pain, but Mercedes foresaw the valve failing, so they gave you a stop lever to use in a pinch. Replacing the shutoff valve is not hard, but if done wrong can destroy your engine.
Why does my diesel engine keep running after I Turn Off the key?
When you turn the key off on your Mercedes diesel, you may have noticed that the engine will not quit immediately. In some cases it may even keep running a second or two after you have turned the key to the off position before it finally quits. That alone should give you a clue that a diesel engine uses a different approach to shutting down.
When you turn the key off on your Mercedes diesel, you may have noticed that the engine will not quit immediately. In some cases it may even keep running a second or two after you have turned the key to the off position before it finally quits.
When you turn the key off on your Mercedes diesel, you may have noticed that the engine will not quit immediately. In some cases it may even keep running a second or two after you have turned the key to the off position before it finally quits. That alone should give you a clue that a diesel engine uses a different approach to shutting down.
What should I do if my Mercedes Benz won’t start?
Start the car and you should be able to get around 60 psi. When the engine is running and when you turn off the engine the pressure should stay steady. Always perform this test on a cold engine. Next, make sure that the fuel injector connections are secure and not loose. Check the fuel pump and the fuel pump relay.
In all Mercedes diesel engines from the first 300D in 1975 up to the mid 1990’s, vacuum (suction) is used to turn the engine off – not electricity! In simple terms – there is a valve mounted on the rear or side of the diesel fuel injection pump.