On 03/21/99 20:09:14 you wrote:
>
>Hello all,
> I finally got my MGB back today, but there's a slight problem...
>
> As I might have mentioned before, my oil consumption has gone up
>since December on my 'B. I thought that the crankcase ventilation
>might be plugged, so I cleaned and changed hoses. Today on my trip
>back, things came to a head.
>
> I found that the crankcase pressures were blowing my oil filler
>cap off and spewing oil all over my engine bay! I have no idea why,
>but here's the relevant run-down on what's been done to the car that
>might give you knowledgeable folks a clue...
>
> *1974 MGB roadster with 80k on the engine
> *HIF intake replaced with an HS-4 intake, but the HIF's stayed
>the same
> *Re-filled the carbon canister with 1 inch of carbon
> *Most emissions in place except for the gulp valve
> *No vacuum advance on the dizzy
>
> The car still burns very little oil. At the most, there is a
>small puff of blue smoke when I hit the throttle, but at no other
>time. The car leaks some oil, but not too much. There is no oil in
>the water or vice versa. The car does not have a vented oil cap.
>
> What should I look for/change on this car? Do I need to empty
>the carbon canister like it was before? Is there something plugged
>somewhere? Should I buy a vented valve cover? Should I change the
>intake back to the original HIF-style, or won't it make a
>difference?
>
> Before I made the above-mentioned changes, I would get about 800
>miles before I needed to add a quart of oil - now I have to add a
>quart every 200 miles! In case it means anything, the car still
>runs very strong with no misses or power loss. In fact, I got 30
>mpg today!
>
> Anyway, I'd love to hear what you've got to say. I need to
>drive this car, and I can't afford to pay for a lot of oil! Thanks!
>
>Michael S. Lishego
>http://www.mgb.bc.ca/virtualgarage/
>
>
>
Is your tappet cover vent line kinked or obstructed in anyway? Adam's 72 B had
a kinked vent
line from the tappet cover which resulted in forcing oil passed the rear seal
and even pushing
the oil dip stick out of the tube.
David Deutsch
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