hpi247

Hello all. I have a jdm h22 in my 94 civic. Im trying to do a compression test. I removed the spark plugs. Removed the ECU fuse. Screwed in the compression tester. While i hold the gas to the floor and crank the engine 5 times nothing happens at all. i tried this in 2 cylinders so i think im doing something wrong. any ideas? thanks in advance guys.

Pman92

Why are you holding the gas to the floor. I would say your compression tester is bad, or your motor needs rebuilt.

hpi247

im following this guide http://www.c-speedracing.com/h...t.php and it says to hold the gas down while cranking the engine. i did not receive any results from any cylinder. i figure if i did not have any compression at all, the car would not be running well but the car appears to run perfectly. right now im leaning towards im missing a step somehow or the compression tester itself is bad.

577HondaPrelude

does the car turn over when you crank it?

hpi247

i figured it out, was all my mistake. i forgot to hold the clutch down.
on a better note, i got cylinder1 265 cylinder2 275 cylinder3 275 cylinder4 275. results seem good to my knowledge.

bluedlude

yeah, those are definitely good numbers? questionably good.

hpi247

why do u say questionably?

m00nr0ck Si

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by hpi247 &raquo;</TD></TR><TR><TD CLASS="quote">why do u say questionably?</TD></TR></TABLE>

because those numbers are pretty high for a stock H22a , could be several factors that cause it though.

hpi247

the engine was cold, so i think that may be why they are so high. could anything bad come from high numbers?

mgags7

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by hpi247 &raquo;</TD></TR><TR><TD CLASS="quote">i figured it out, was all my mistake. i forgot to hold the clutch down.
on a better note, i got cylinder1 265 cylinder2 275 cylinder3 275 cylinder4 275. results seem good to my knowledge.</TD></TR></TABLE>

lol you didn't notice the engine not turning over?

Those numbers are extremely high, though the type of tester and altitude/climate all can skew the results. What you're looking for is consistency, every cylinder within 5% is great, 10% is acceptable. You have a good engine on your hands

hpi247

i couldnt figure out what i was doing wrong lol. then it hit me, and i felt like an idiot. HMOTORS sent me a good engine