oil breather problems

[mk216v]

Can anyone tell me what needs to be done to stop oil coming from the breather into the air filter housing and inlet pipe on my '89 16v ?

[turbo]

you will always get abit of oil in the inlet pipe if thats where the breather pipe from the rocker cover goes.

sometimes there may be a pipe leading off the rocker cover pipe which sucks oil striaght into the inlet manifold to be burned....... and this pipe gets blocked.

the only thing to do is to clean out all of the breather pipes other than this theres not alot that can be done about it........unless you have a type of cam splash guard missing inside the rocker cover! even with this cover you still get oil but not as much as if it waasnt there...

[mk216v]

Thanks for the reply - but I'm not quite with you on this blocked pipe from the rocker cover - the breather on my 16v comes from the block directly to the air filter housing.
Is there any point removing the breather from the block and cleaning it? Should there be a non return valve in the pipe? Enough oil is being sucked through the pipe to cover the K jetronic air plate in the filter housing head - is this normal?

[tallchap]

Has your motor done a lot of thrashed miles as it sounds like it might be forked to me....

You could vent the breather into a separate breather tank (this is better on performance cars than letting the car re-breath nasty, hot, oily air) but sounds like yours will just fill the bottle with oil.

Will stop it filling up the airbox though....

[mk216v]

No not really - 92k genuine miles - not thrashed too much- does not need any oil topping up between 5k services and drives as sweet as a nut!
any ideas?

ps when I say cover the air plate on the K jet - I mean the oil mist condenses to leave a thin covering on this plate.

[tallchap]

I wouldn't worry too much then. From what you said originally it sounded like you had a lot of oil in the airbox. You will always get some oil through the breather on higher mileage cars.... just keep an eye on it. Or, as I said before, put the breather pipe into a separate bottle/tank.

Think Automotive sell them - 0208 568 1172.

[mk216v]

Thanks !

[turbo]

sounds normal you will get a some oil as this is how there designed....... this is how sticking throttle plates are caused.......thats why they make throttle injection cleaner.......

note that this is not my hand a pic found on net




carb cleaner is the same stuff....... use this to clean the isv out........

[Alexg40]

You could also fit a catch tank if it bothers you that much.

The breather is designed to return crankcase gases to the engine to be burnt to reduce emmisions.