Oil Cap Off Engine Stalls

However i have no idea what is.

Oil cap off engine stalls.

Engine stalling is more likely to occur during cold weather or when starting a cold engine. When you take the oil cap off while runnning you also need to block the hoses that vent the blowby into the inlet system. This ll give you a little idea how oil moves around inside an engine. By removing the oil cap you have introduced a large air leak in a closed pcv system.

Also close the tank with the cap when you are done. 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. Z4 2007 3 0 si almost 100k km mobil 1 0w 40 no power loss so far no failure codes nothing at all. 2013 mustang 3 7 v6.

So this kind of engine stalling problem often means the engine is not getting enough fuel and or too much air. Just messin around with my car. It means that the fuel system is working as advertised. Clean up if there is any oil residue.

There could be two possible reasons for smoke coming from oil cap. Engine stalling problems can be hard to find and are often sensor or temperature related. Hot fuel bypasses worn valve stem seals and rings. 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.