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Re: [Healeys] Venting oil through rear air filter

To: Tom McCay - Classic-Car-World Ltd
Subject: Re: [Healeys] Venting oil through rear air filter
From: Bob Spidell <bspidell@comcast.net>
Date: Tue, 24 Aug 2010 23:46:59 +0000 (UTC)

Excess pressure in crankcase could be the problem or, possibly, you have too 
much oil being squirted around inside the valve cover, causing the oil to be 
sucked into the rear carb. 


Bob Spidell - San Jose, CA 

Hi guys, I have an interesting issue where I seem to be venting excess oil out 
of the rear carb air filter on my BJ8. The engine runs great and the oil 
pressure is good but I seem to have excess oil dripping out of the air filter 
and down onto the exhaust system. The oil levels are also correct, but I do 
seem to use or loose about half a pint on a 200 mile trip. 

I thought that perhaps that the air filter needed cleaning and that the engine 
was breathing more out of the crank case than it should and sucking the oil 
out. I've cleaned the filters but the problem remains. I think the next option 
is to do a compression check to see if I have a ring problem where the crank 
case is being pressurised or perhaps valve stem seals? 

My gut feeling is that I'm going to have to pull the engine out eventually but 
are there any other thoughts before I have to go this far? 

Kindest Regards 


1965 AH3000 MkIII BJ8 
1960 MGA1600 
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