JDM EJ1 95

i did a compression teest on my B18b the other day just to see how it went.. but the numbers seemed extremely low like in the 50s they were all within 5 psi of eachother and the motor runs great.. but i was wondering if there could be a reasoning for this.. i did the compression test like this.. i unplugged the ECU, put the compression tester in #1 had a friend watch it and cranked it over till it stopped moving.. then went on to #2 and so on. i went 15.8 @ 89 with it in my coupe and that was on a shitty 60 ft so the motor is definitely running good..

JDM EJ1 95

oops did not hold the gas pedal down when doing this.. but will it make that big of a difference?

ABK

yeah you weren't pumping any air in.

JDM EJ1 95

alright cool definitely missed that part.. thx i wasnt too worried anyways just a little curious

Street Ghost

When I did my compression test.. I warmed up the car just a little bit and then unplugged the distributor plugs and pulled the 'Back Up' fuse in the fuse box. Then I did the compression test with the gas pedal floored.

JDM EJ1 95

yea ill do it again on thursday with the air pedal to the floor

xerox445

hmm, i did mine by just pulling the injector clips off, i didnt floor it ether and it came out fine. But yeah that could be a factor. Just the fact that they were all close together usually means good things.

JDM EJ1 95

yea i think the tester i used is broken because someone got somewhat of the same low numbers... dam kids at school dont know how to treat **** with respect