Jul 17, 2005 · Running compression tests are used to diagnose driveability problems on late model cars.Yes you have to remove the schaeder valve for the test so the gauge doesn't hold …

Aug 10, 2013 · What is a running compression test anyway? What does that mean "hold down the gauge?" Run a regular compression test as noted by RB69. If no major discrepancies noted, …

Jul 15, 2008 · Furthermore, if you perform a compression test on an engine that has worn rings, worn or improperly seated valves, then your PSI readings on the compression guage will be …

Dec 10, 2015 · Opinions on a compression test. Mystery 454 unknown internals, been sitting for years in the shed. Compression test with a push in type tester 100-110 psi...

Jun 11, 2023 · Hi everyone, I performed a compression test on my 454. I purchased my Chevelle 6 years ago with a nice running 454 in it. From the information that I gathered from the …

Mar 15, 2016 · Using a compression tester to check the basic condition of an engine is better than nothing, but it is NOT the best choice. Compression test results can be inaccurate and …

Feb 18, 2008 · Guys, I have finally got around to testing my compression on my SBC before my rebuild to drop on new heads and cam. I am running a very stock 350 with 76 cc heads. I got …

Jul 10, 2004 · Did a test on that cylinder tonight. Not the easiest to get the cylinder on the compression stroke with no compression. I turned the engine over till #3 was on the top of …

Apr 19, 2024 · A running compression test is just like the name implies. With 7 plugs in a connected you put the compression test gauge in the 8th hole. Start up the engine and watch …

Dec 1, 2024 · From what I understand, since the dry test numbers were strong and so close together there wasn't a need to go any further. Since the wet test had notable increase in all …