SgtB

Long story short, I miss shifted the other day and wanted to check things out. Pulled the cover and checked all the retainers and everything was ok. The compression test was good, and bad at the same time. My numbers where: 250, 245, 250, 255. From a balance standpoint, I'm thrilled, but the numbers are pretty high. Could carbon cause this spike? I'm a little skeptical at only 39k, but I'm just wondering. Does anyone think my gauge is just off? Thanks.

AP_ONE

no dude your 100% fine!

s2k dre

when u miss shifted were u up shifting or down shifting? u cant over rev on an up shift i dont think u'll just hit the limiter but if u slam it into 2nd at 90mph then that will over rev, someone correct me if im wrong.

iam7head

hi jack batman

to the OP: what temperture? what brand of gauge? how many cranks?

AP_ONE

As per above, a compression test should always be done while the motor is warm, all plugs should be takin out, and you should crank no more then 5-6 turns while holding the gas pedal to the carpet

remove 15 amp fuel fuse under dash

SgtB

Hmm, I did all that but cranked until the gauge stabilized. Maybe 8 cranks per cylinder. Not too worried anymore though. I finally looked at the Helms and saw the 28psi tolerance. I need to stop looking online for numbers and use the source. Thanks for the help.

jyeung528

my compression checked out fine after an overrev...

then a year later the compression was low, and i determined i had bent exhaust valves.

SgtB

Did you check for cracked retainers? I finally saw a picture of a cracked S retainer and was looking for the wrong thing the other day. I'm going to pull the valve cover, one more time, and look for sunken valve stems.

jyeung528

yes sir