acomp
Well-known member
I was driving my car in a parking lot when it started to rev really high so i shut it off. when i tried to restart it it would turn over but it wont start. what could it be?
The starting mode (DBW) will not let more fuel in. The tiny bit of fuel injected will be quenched by the thick film of oil on the bowl of the pistons. In running engines, the diesel mist bounces off the dry piston bowl, very little "wets" the piston until it gets to temp within a few seconds, then it evaporates. The engine is cold now and the coating of motor oil effectively prevents the ignition.whitedog said:Keith is right on as usual. I would add you should pull the lower intercooler hose and drain out any extra oil, then pull the hose off of the turbo that goes to the intercooler and see if the bearings there are whacked.
It could be that oil has pooled in the intercooler and it got sucked into the enigne and ran unchecked for a few seconds.
But why won't it start now?
Did you check the antishudder valve?
I like that idea. Too much liquid in the combustion bowl to get good sqwirl.Keith_J said:The starting mode (DBW) will not let more fuel in. The tiny bit of fuel injected will be quenched by the thick film of oil on the bowl of the pistons. In running engines, the diesel mist bounces off the dry piston bowl, very little "wets" the piston until it gets to temp within a few seconds, then it evaporates. The engine is cold now and the coating of motor oil effectively prevents the ignition.
I would NOT recommend ANY starting fluids, ether or propane. That is asking for another run-away.
Fix the problem first, that being how that oil got into the intake. But for a 2k, if the turbo is fine, bet on oil mist. CLEAN IT.
Well, SOMETHING was causing the engine to race. Yes, oil WILL burn nicely in a diesel without much of the black smoke because unlike a gasoline engine, there is far excess air. In a gasoline car, the oil cannot burn because there is insufficient oxygen so the oil just becomes a white vapor cloud. But in a diesel, there is plenty of air and oxygen so those hydrogen atoms on the hydrocarbon that is oil are easily stripped off, using all the oxygen available. Since the carbon backbone of the oil molecule is now "bare", you get black carbon smoke.acomp said:Im not totally sure that it was burning oil, it was more like thick diesel smoke due to the high revs. Im no where near my car at the moment I will check the anti shudder valve and fuel lines and glow plug for oil in the morning.
Something caused it to go uncontrolled. If not a run-away from oil in the intake, it has to be electrical between the power control module, the ECU and the injection pump.acomp said:Ok so I checked it out at the parking lot and there isn't any oil in my engine and the anti shudder valve seems to be functioning properly. there is a single bubble in the clear fuel line however.
Do you mean that you pulled the dipstick and there was no oil? If so, I would not try to run this until you can get it someplace warm and do some in depth checking.acomp said:Ok so I checked it out at the parking lot and there isn't any oil in my engine and the anti shudder valve seems to be functioning properly. there is a single bubble in the clear fuel line however.
OK. My misunderstanding. Carry on.acomp said:It was at a normal oil level on the dipstick, there wasnt any oil in the cylinders that I could see.