my friend wants to do one on his motor, but he's never done it before. is it hard to do? any tips will help.

thanks

 

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http://www.c-speedracing.com/h...t.php

 

warm car up, make sure its fully warmed up

remove ecu fuse
remove spark plugs
GENTLY thread compression tester into sparkplug hole Dont torque more then you can with 2 fingers.

hold the compression tester
push the gas pedal to the ground
push clutch in
turn motor over 5 times
record and compare.
The key is to look for consistent results.
good compression is when they are all the same +- 10PSI

for even MORE accurate results, remove your intake. I choose not to because it doesnt change much. Your mostly looking for consistancy. High #'s are just bragging rights
let car COMPLETELY cool before putting back the spark plugs, otherwise you risk a higher chance of stripping the spark plug thread.

torque to 12ft/lbs