Oil Cap Off Engine Stalls

This ll give you a little idea how oil moves around inside an engine.

Oil cap off engine stalls.

So this kind of engine stalling problem often means the engine is not getting enough fuel and or too much air. Remember not to open the cap when the engine is hot. By removing the oil cap you have introduced a large air leak in a closed pcv system. It will have stalled becuase it will have sucked air onto the inlet system through the oil filler hole this will have messed up the air fuel ratios seeing it will have been sucking in air after the afm so the afm will not have been able to get the mixture right.

When you take the oil cap off while runnning you also need to block the hoses that vent the blowby into the inlet system. There could be two possible reasons for smoke coming from oil cap. However i have no idea what is. Z4 2007 3 0 si almost 100k km mobil 1 0w 40 no power loss so far no failure codes nothing at all.

Engine stalling problems can be hard to find and are often sensor or temperature related. Clean up if there is any oil residue. When the fuel bypasses worn. Also close the tank with the cap when you are done.

Engine stalling is more likely to occur during cold weather or when starting a cold engine. Some systems are that sensitive bmw for example will do the same thing if tuned properly if there is a problem with the engine it would be that it is running on the lean side. 2013 mustang 3 7 v6. Just messin around with my car.