E46 318 - blow by from oil filler cap?
E46 318 - blow by from oil filler cap?
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Discussion

Ian Geary

Original Poster:

5,635 posts

222 months

Saturday 2nd October 2010
quotequote all
Morning chaps

I've after a bit of help. I've been to look at a 2000 plate 318 today.

It's advertised as low mileage - 76,000 but when I removed the oil filler cap at tickover, there was quite a bit of blow by, and oil being blown out.

generally for engines, this could be a sign of worn rings, but I just wondered if this is typical from BMW 4 pot engines? or if rings are a particular issue?



A previous car (Toyota) with knackered rings would vent plumes of smoke from the filler cap, but after I'd rebuilt it there was virtually none.

thanks

Ian



Ian Geary

Original Poster:

5,635 posts

222 months

Tuesday 5th October 2010
quotequote all
well, after reading up on the E46 I can understand now that a bit of blow by is the least of the problems I need to worry about.

I looked at a 323 at 99k miles, which had a really sweet engine with none of the blow by I saw on the other car.

But, the rust on this car was pretty shocking to be honest. Shame really as the E46 fits the bill for what I'm after.

Ian

paprika

5,512 posts

197 months

Wednesday 6th October 2010
quotequote all
Bottom end of the E46s are generally rusting pieces of rubbish where you have alot more to worry about than some rust.