RE: Low Compression 1990 200TQW IA Stage I

["Lewis, Gary M" <Gary.Lewis@West.Boeing.com>]

Thomas said;

> The bad news: 100/110/115/65/110, with a 25% leakdown on all five 
> cylinders. Also, light oil leakage at #4 sparkplug. Oil consumption is 1qt
> 
> per 2500 miles, no radical change over time.
> 
My (car's) cylinder pressure is fine, but I'm burning (using?) oil at about
the same rate.  Plugs are always pretty clean.

> 116000 miles total. I bought the car used at 82K , unknown history. 
> Switched to Mobil 1 and added  IA Stage I chip and spring mods, within a 
> few months of buying it.
> 
> Struggling through the archives, seems like rings are unlikely. It sounds 
> like one or the other of (1) a complete valve job (2) just guides (3) just
> 
> the guide seals.
> 
My mechanic thinks my guides are shot (I keep telling him the turbo is
burning oil, he keeps telling me to shut up   :-)   ).  Like I said, I don't
have cylinder pressure problems.  He recommends doing the whole head job
since 90% of the work is getting the damn thing off in the first place.
Phil seemed to have luck purchasing a new head instead of reworking the old
one.  Don't know if that is an option to 'murricans.

HTH,

Gary Lewis 200km 86 5Kcst 5sp 1.8 Bar
TransGlobal Financial  (818) 384-7600
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