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Re: [T3] Oil breather cap off

On 28 Oct 2003 at 8:08, Aaron Clow wrote:

> I went to adjust my timing this morning and found that at some point,
> most likely during my last drive, the oil breather cap had popped off.
> What does this signify? Too much oil pressure? 

This doesn't see the oil pressure; it's just exposed to the crankcase pressure. 
It MIGHT indicate too much blowby or poor crankcase venting, but most likely it 
is just due to being old and poorly seated in the past. The "hooks" on the 
bottom of the plug have to be pushed down far enough to latch inside the 
breather box. Often, they are not pushed down far enough to catch.

If the plug has been left insufficiently seated for a long time the hooks will 
have taken a set inward so they will not catch. You can fix this by removing 
the plug, cleaning it, fitting something inside it that will spread the hooks 
outward, and then immersing the cap this way in boiling water for 20 minutes.

> My damn pressure sensor hose keeps coming off the air intake plenum
> though (would this be what caused the two backfires this morning, each
> after quickly slowing down from 70mph to about 50mph, letting off
> accelerator?)... Any tricks on how to get your hands under there to
> secure it tightly to the nozzle on the air intake? I can't seem to get
> under there. 

If the hose is long enough, you can cut off the frayed end and give it a fresh 
end to work with. It should stay on just pushed into place; a clamp is never 
needed. If the hose is too short it should be replaced.

Jim Adney, jadney@vwtype3.org
Madison, Wisconsin, USA

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