Ferm and other vortec guys I need help!

[THEFERMANATOR]

Originally Posted by spareparts

recheck with another compression tester, go ahead and pull all the plugs and check compression on all of them

If all else fails, remove the check valve from the compression tester hose and set it up so tou can use it to pressurize the cylinder. Rotate the engine around to TDC and blow some air into the cylinder. Listen to see if you hear air rushing out the intake, exhaust, crankcase, or if the engine rolls around. You can find a compression leak in a hurry with compressed air.

[Stinky_Hooker]

Thanks guys!

[smokeonthewater]

Another possibility is carbon sticking a valve.... Be cautious.... If it IS carbon you can end up w valve piston contact.... Did a head job on Mom's 98 z71 for that very reason.