February 7, 200422 yr Was going to pull heads due to low compression in one cylinder and wierd power fluctuations. Got as far as manifold and fuel rails etc. Once all that stuff was off i could see inlet valves and exhaust (thru spark plug holes). Inlets looked a little clagged in drivers side (turbo side in Aus), exhaust looked fine (had thought burnt exhaust valve). Noted that the low comp/power cylinder inlet port looked a little 'dry' compared to others - sort of 'sooty'. Maybe a clagged inlet valve letting gas thru? Sprayed with Subie Upper Engine Cleaner (holding breath!!!) and watched deposits dissolve (cooooool!). Did another comp test with decent SCREW-IN comp tester and find ALL cylinders same at about 100psi - may be a bit low but was rally motor and maybe had comp lowered to run more boost - i dunno. The when i check manifold i see injectore for that same cylinder looking wierd - ie the litle brass pin was all glittery and seemed funny shape. Pulled injector and sprayed same stuff on it - then elect contact cleaner - NOW looks same as others. Really DONT want to pull heads - think its fixed?
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