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Old 04-21-2007, 09:35 AM   #1
Nima
Blue 67
 
Join Date: Apr 2004
Location: Western WA
Posts: 1,179
compression testing

When you do compression test, do you remove all the spark plugs at once or one at time when you are testing each cylinder? Does the cylinder has to be on TDC? I got kind of confused about compression test and leak down test. would somebod explain this to me.
Thanks a lot.
__________________
1953 GMC 3/4 ton: current project
1967 C20: 5.3 voretc with T5 conversion, 4 wheel 8 lug disc brake
1972 Nova: my 4 door sport sedan! 5.3 voretc + T5 conversion. drivable project, FUN!!
1979 Camaro Z28: 5.3 vortec conversion with build TH350: drivable project, Fun to drive
1992 Camaro RS convertible (Z28 clone): 5.3 conversion with build T5: on going project
2005 Silverado 2500, 4x4 Duramax, original owner
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