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How to: Compression Test!

9K views 2 replies 2 participants last post by  silverbullet207 
#1 ·
Spent 45 min performing compression test with $25 compression tester today.

2002 WRX with 90k miles
Mods: VF34 @ 16.5psi 302whp
JDM STI TMIC
Maddad v2 DP & whisper catback
One step colder NGK platinum plugs
Stock intake with K&N panel filter
German castrol oil

1. Remove stock intake box, etc:



2. Remove 12mm bolt in order to remove coil pack from each cylinder:




3. Remove spark plugs using 5/8" long socket with an extension



4. Coil pack and spark plugs removed:
 
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#2 ·
5. Pull ignition fuse
- Fuse remover is located next to battery:



6. Connect compression tester into each cylinder:



7. Now it's time to crank the engine with wide open throttle. Crank the engine 6 times.


8. Repeat the test for each cylinder and pray numbers come out good:





:banana:
 
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