[T3] Trouble home from Bugorama

[Jim Adney]

On 4 Nov 2015 at 7:03, Jacob Adam Schroeder wrote:

> After nearly two months to cool off (and repeated thoughts to simply throw
> in the towel and sell the car--which I may ultimately do, but not yet), I
> finally dropped the engine and stripped it down to find out what happened.
> 
> I had zero compression in cylinder 2 because the exhaust valve broke.  If
> you are interested in seeing the carnage, here it is:
> https://picasaweb.google.com/lh/photo/pXLI0Qm-N97Lyzj7FkY5qNMTjNZETYmyPJy0liipFm0?feat=directlink

One more thing that occurred to me is that your excessive richness 
could have been caused by a worn out voltage regulator. This is a 
commonly overlooked source of D-jet problems.

But, it does not explain the burned valve. The cause of that must be 
with the valve, the valve job, the valve guide, or the valve spring. 
A broken (invisible crack) spring could reduce the spring pressure to 
the point where there's insufficient heat transfer from the valve to 
the seat when the valve is closed.  

-- 
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Jim Adney, jadney at vwtype3.org
Madison, Wisconsin, USA
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