joed
Active Member
OK I'm hoping for some help from you engine guys. I have a fresh motor, basically stock with Comp 206/206 roller. Has maybe 10-20 hours driving around with some WOT's so rings should be seated and all broken in. stock shortblock, champion irons.
Running rough, compression 120-130 psi with minimal change (max delta +3 psi wet). Shouldn't it be 150 to 160 psi range on a fresh stock motor? Leak down is less than 1% on the odd cylinders were all I tested since all identical. 60# injectors, Old TE-60 turbo (for now) Alky control, wideband, power logger, Eric's TT chips.... standard stuff. Compression and leak down on cold engine
I've swapped injectors (had a spare set), replaced fuel pump (was 20 years old anyway), fuel pressure doesn't seem to drop off / leak some where, smoke tested intake and exhaust side all with no changes. What the heck is going on?
note - i'm not sure how up to date my sig is right now.
Running rough, compression 120-130 psi with minimal change (max delta +3 psi wet). Shouldn't it be 150 to 160 psi range on a fresh stock motor? Leak down is less than 1% on the odd cylinders were all I tested since all identical. 60# injectors, Old TE-60 turbo (for now) Alky control, wideband, power logger, Eric's TT chips.... standard stuff. Compression and leak down on cold engine
I've swapped injectors (had a spare set), replaced fuel pump (was 20 years old anyway), fuel pressure doesn't seem to drop off / leak some where, smoke tested intake and exhaust side all with no changes. What the heck is going on?
note - i'm not sure how up to date my sig is right now.