3800 series III engine non supercharged 2004 grand prix gt2. messing around with compression and leakage test of my engine. felt compression stroke on cylinder #1 by putting finger in cylinder #1 spark plug hole untill pressure was ported out/blowing on finger. turned crankshaft twice (one camshaft revolution) and verified i was on the compression stroke. i then ported 100 psi very slowly into the cylinder and turned the crankshaft manually farther into the current stroke / progression of strokes until the crankshaft / crankshaft pulley did not turn under the full 100 psi that i ported into the cylinder. now, i could not move the crankshaft / pulley either way from that spot without the pressure forcing the piston down. Have i achieved TDC of cylinder #1? Furthermore cylinder #1 & #3 failed compression test. #5 passed. however for all the lh cylinders (1-3-5) air was pissing out the intake at the point i described? Havent even tried rh cylinders. #5 tested good, i am doing something wrong.
(cant do pencil tricks, etc. even using a piston stop with graduations would be difficult as i cant even see the spark plug hole)(dont as far as i could tell make an actual piston stop peg tool/timing peg that is set for that specific engine. this is what i have used before)
HELP / SUGGESTION WOULD BE APPRECIATED...........
.....ABOUT TO SLAP IT BACK TOGETHER AND SAY FORGET ABOUT IT.
(cant do pencil tricks, etc. even using a piston stop with graduations would be difficult as i cant even see the spark plug hole)(dont as far as i could tell make an actual piston stop peg tool/timing peg that is set for that specific engine. this is what i have used before)
HELP / SUGGESTION WOULD BE APPRECIATED...........
.....ABOUT TO SLAP IT BACK TOGETHER AND SAY FORGET ABOUT IT.