Dry test: cylinders 1-4 175,165,152,152
Wet test: 190, 185, 183, 176
whats the maximum variance between wet and dry allowed before it points to piston rings?
THoughts on burning a quart in 2-3 miles?
1995 1.8l miata. 100k miles
Smokes: compression test
Dry test: cylinders 1-4 175,165,152,152
Wet test: 190, 185, 183, 176
whats the maximum variance between wet and dry allowed before it points to piston rings?
THoughts on burning a quart in 2-3 miles?
1995 1.8l miata. 100k miles
Last edited by FlipKing; 08-01-2009 at 09:31 PM.
97 DX Civic w/ H22 FS
Were those done hot or cold? Did you mean, burning a quart in 2 miles or 2000 miles? You have almost 20 psi difference between some, which is a little beyond normal. But, if your valve adjustment isn't the same between all of the cylinders, it will change your compression readings.
One quart in 2000 miles isn't terribly bad, but I have seen much better. What are the details on the engine?
no, 2 miles, but I kept it under 4k and burned almost none. 100k miles. 1.8l miata
97 DX Civic w/ H22 FS
it was driven to my house, let sit 20 minutes and then tested
97 DX Civic w/ H22 FS
Burned a quart in 2 miles? Time to find another engine!
well maybe I didnt notice it burning, but I added a quart today. It doesnt smoke at ALL if I'm under 4k or so. and my compression wasnt that bad which confuses me
97 DX Civic w/ H22 FS
my thoughts are rings, headgasket, or valve seals. One person recomended an oil control ring too. so idk...the compression test seems to point to rings because wet was higher than dry
97 DX Civic w/ H22 FS
with a 100k on the motor the wet test will always give better results. standard compression pressure is 182 psi with a minimum of 128 psi. Maximum variation between cylinders is 28 psi. you are real close to the max. im with Init2winit.Originally Posted by FlipKing
Ive had several motors apart that were consuming oil and had great compression test results. And on pretty much every one the oil control rings were seized.
x2. Oil ring is prolly seized to the piston. Just had an engine with the same syptoms that had a nearly perfect comp test.
500whp of spinnin fury!!!
reason being is that under light load its fine but when you builb more compression under heavy load that is where you get blow by...
Motor is fine just needs new rings
pop them outquick hone/clean and your good to go..get OEM for that car too, those aftermarket Cheap O 's are GARBAGE!!!
alright, thanks guys, i'll talk to my mechanic
97 DX Civic w/ H22 FS
If you have something like a crankcase vent valve, they have been known to fail and burn through much of the engine's oil in short order. That sounds like too much oil to be the piston rings.
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