car stalls when i remove oil cap..

[kangman]

when i remove the oil cap of the 318is engine it stalls, when it warmed up i removed it again and it stalled. Restarted it and it never staled but it was spitting oil out..

Is that normal?? my other two e30s never did that, the revs just dropped

[johnl320]

You are introducing an air leak into the inlet manifold via the engine breather pipe

[cecotto479]

It shouldn't stall as in stop running, but it should start to idle a bit "rough". It'll do this if you take the dipstick out or unplug the hose from the rocker cover. Effectively you're opening the sealed crankcase breathing system to the atmosphere.

[mark_i]

thats normal for the engine (m20, m40, m42) to stall or at least run lumpy... the rocker cover is connected to the inlet by the breather hose, so removing the oil cap introduced a large air leak...
oil will splash out of the filler if the engine is running, although with an m40 there is a baffle plate which minimises that.

[magpie]

to QUOTE DanThe .........

"remember Kids the engine runs better with the oil cap on"

[FinalD]

cleaned up. Stick to answering the question, not increasing your post count...

lol?

I don't give a flying one about my post count, my post was just having some fun. Jeez lighten up.

[cecotto479]

cleaned up. Stick to answering the question, not increasing your post count...

Pot.

Kettle.

Again.

Arsehole.