need feedback about compression #'s
07-02-05, 03:31 PM
#3
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well i just sold the car and when I used to drive it, it drove perfect and boosted hard never had any problems with it.......but not as i just sold it the car isn't boosting anymore and the kid said he got a compression check and those were the #'s. but the car starts fine, idles perfect, had tons of power and never lagged. so its really hard to believe it needs a rebuild........
07-02-05, 04:11 PM
#4
If we're talking psi when you say 100 and 80, yes, the motor is damn close to death, and IS dead by Mazda factory standards.
Minimum Mazda spec is around 700 kPa which converts to approximately 102 psi. So, the numbers you're quoting are around 690 kPa for 100 psi and somewhere in the mid 500 kPa range for 80. The car will run, but will probably stall with the AC on and sometimes when you come to stopsigns. No disrespect intended, but if I were the buyer I would have paid for a compression check before laying down my money, but that's just me.
Minimum Mazda spec is around 700 kPa which converts to approximately 102 psi. So, the numbers you're quoting are around 690 kPa for 100 psi and somewhere in the mid 500 kPa range for 80. The car will run, but will probably stall with the AC on and sometimes when you come to stopsigns. No disrespect intended, but if I were the buyer I would have paid for a compression check before laying down my money, but that's just me.
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