BC_99, on 08 September 2019 - 09:40 PM, said:
Was the compression test done on the engine after warmed up to operating temp, or cold engine?
Engine was completely cold. All I did was start it and back it out of the garage. It was such a nice day I decided to work outside instead of in the garage. So I moved it about 15 feet.
croquest87, on 09 September 2019 - 03:32 AM, said:
Perhaps double check your compression w different gage and do leak down test.Just to make sure. I had a cheap compression tester throw the reading off before.Also injectors disconnected and wide open throttle. Check it warm and cold. Little bid of time that's all before you venture into building the motor.
Gage w built in check valve could give you better results but if that also shows at around 100ish or less? Its time for rebuild.
FYI after l rebuilt my motor reading was 142ish after 100 miles of break in. 145-147 after 3500 miles once things settled in. Oil pressure 27 psi balance shafts removed and mechanical head set up.
It is a cheap compression tester. It's the one they have at Harbor Freight. I've had it for a number of years. I think I leant it to tsi_tom at one point.
Turbo Cary, on 09 September 2019 - 04:07 AM, said:
Maybe the cam jumped time? If all 4 are low I would double check timing.
That's not a bad idea, That thought hadn't crossed my mind.
If I decide to build another motor, I won't be a huge deal. I have a spare good block I've had for years ready to do. I can it all built and then just swap motors. We'll see. Right now, the car is running much better. It ran real nice coming home from the local cruise and pulled nice boost till about 80mph then I let off. Didn't wanna get pulled over.