Low compression in 3 holes!
#1
Low compression in 3 holes!
Hey guys I got some weird compression numbers on a motor I bought off Craigslist.i had 60 on 2 holes on the passenger side and 90 on 1 hole in the driver side.I totally ignored this and put the motor in my truck(project truck)and the truck runs good but lacks power big time.No check engine light or misfire and so far I put 2000 miles on the engine so far and I'm gonna check the low holes tomorrow.I was told that the engine only had 70k on it and it sat in this guys garage for 5 years!It only gave me a 15.7 in a short bed with long tubes and a tune witch is **** in a 2wd swb.With 3 low numbers do you think this would be valve related or ring related?thanks in advance for any past experience or info
#2
TECH Addict
iTrader: (7)
Hey guys I got some weird compression numbers on a motor I bought off Craigslist.i had 60 on 2 holes on the passenger side and 90 on 1 hole in the driver side.I totally ignored this and put the motor in my truck(project truck)and the truck runs good but lacks power big time.No check engine light or misfire and so far I put 2000 miles on the engine so far and I'm gonna check the low holes tomorrow.I was told that the engine only had 70k on it and it sat in this guys garage for 5 years!It only gave me a 15.7 in a short bed with long tubes and a tune witch is **** in a 2wd swb.With 3 low numbers do you think this would be valve related or ring related?thanks in advance for any past experience or info
My money is that motor is hurt.
#3
it was a roll over motor and yea your probably right man that sucks.5 years is a long time to sit and the story gets stretched more and more.guess I'll do a wet compression test and see what happens.I got a lq9 otw but I can't honestly sell this 5.3 to somebody knowing it's issue and that sucks lol
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#9
Alright guys here's the numbers after2042.8 miles of road time the hole that was 90 is now
145And the hole on driver side that was 65 is now
115And the hole in the back on passenger side is now
1302 of those numbers aren't great but there above 100 hmm maybe there was calcium build up on the heads u should seen the waster pump **** was nasty
#10
thanks for breaking that down for me buddy