[acna_pcc] Still on 4 cylinders.....No Dice!

[AUDIJIM at aol.com]

Harald,

Now that sounds like something worth checking out. I have a hard time 
believing the bad piston ring theory, because #4 cylinder had the best compression 
when I performed a compression test. (before you ask, I tested when cold) That 
would also eliminate any bad valves (as far as how well they are 
seating/sealing) Harald's theory also holds water to the fact that my engine ran worse after 
an oil change with Mobil 1 15-50. Perhaps the change in viscosity had an 
effect on this engine/valve train. I have an RS2 exhaust cam coming from one of my 
vendors in the UK. I would love to install it, but I would like the engine to 
run correctly before I modify it any more. I'll try replacing the valve 
springs on #4 cylinder next.

Thanks,

Jim