200psi compression help??
does anyone have any idea why my compression would look like this???
cold #1 205 #2 195 #3 204 #4 125 after drivin #1 205 #2 205 #3 205 #4 205 car details 1998 240sx ka24de 248/232 cams drop in k&n dual electric fans full exhaust no cats problems exhaust cam is harder to turn manually then intake cam like waaay harder |
Do it again, if you get similar results, post it up. It was probably a one off test
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yeah i ran it two othr times
and now im reading 205 on all cylinders |
rings or valves
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im gonna say rings.
best way to test... do it cold since thats when you get odd numbers. make sure that while youre cranking it over, you have the gas at WOT. on the low cylinders (#4) add a little bit of oil down the sparkplug hole, crank over a couple times, then retest. if the numbers go up significantly, then its your rings. if they go up a little bit, but arent even close to the other numbers, then its your valves. |
try some seafoam, loosening up some carbon deposits may help - better than a ring job for sure
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