bad piston is at 90cc the rest of the 5 are at 180cc it shakes alot under 1500 rpm
2007-09-09 11:46:30 · 3 answers · asked by wiz909sigd 1 in Cars & Transportation ➔ Maintenance & Repairs
Take the head off the side with the low #,
see if its valves or something else.
Hate to tell you but thats about what you need to do.
2007-09-09 12:10:15 · answer #1 · answered by Anonymous · 0⤊ 0⤋
there is no way to increase it short of fixing the base engine problem causing it. try this. add a small amount of oil (1/2 oz or so) and spin the motor a few times checking the compression. if it comes up from the 90 you measured initially it is prob rings or a cracked piston. if it stays the same prob valves or seats. figure out where the concern is, top or bottom and go from there...
2007-09-09 12:17:56 · answer #2 · answered by chevy_man_rob 5 · 0⤊ 0⤋
Remove the spark plug from the low cylinder. Squirt a couple of shots of engine oil in through the spark plug hole. Take another compression test in that cyl. If the pressure remains the same, then you have a leaky valve. If it increases then the rings are in poor condition.
2007-09-09 12:21:46 · answer #3 · answered by Mr. T 7 · 0⤊ 0⤋