So, hello again. In my adventure to find out why my engine runs like crap and smokes like a train, I've decided to test the compression (since it seemed like there were some problems at CYL 1). The figures that i've got are (in BAR): Cyl 1: 8.9 (without acceleration), 12.5 with full throttle
Cyl 2: 9.6; 12.1
CYL 3: 9.6; 12.8
CYL 4: 10.1 12.4.
I don't really know what to think about those figures because I don't know what the compression should be like, I know it should be above 170psi but in my case, withouth throttle the compression is too low, with full throtle the compression is too high. I think there are some problems in the cylinder head above cyl 1, I will take it off to see. The engine seems to have been rebuilt poorly by the mechanic so I will have to do it myself. I have the repair manual but I need some extra advice, specially regarding the tappets, the last time I've rebuild the engine (before the mechanic did) the tappets started to sound badly and I've been told that in order for the tappets to work properly I have to idle the engine at 2500rpm just after the first start (after rebuild). Any other things I should know that are not written in the repairing manual? On the other hand, this week I'll be buying a 16v SW, it's engine has never been open, it runs ok but I'm thinking that since I'm taking it off to transfer it to my p4, should I open the engine and take the cylinder heads to a specialist for cleaning and measurement? Or is it a bad ideea to open an engine that works fine? Sorry for the long chaotic post.