a compression to kill for

[ebpda9]

after the problems with my car i finally checked it for cylinder compression and this is what i came up with:

piston #1: 120 130 150 180 (not bad for the mileage)
piston #2: 60 120 145 160 (ouch)
piston #3: 60 120 145 165 (ouch)
piston #3: 120 160 180 180 (not that bad for mileage)

i guess the cylinder head is cracked between the piston #2 and #3, but the engine needs an overhaul soooooooooo bad or a h22.

[ebpda9]

i just checked the chilton's the haynes and mitchel manuals and they say the minimum pressure is like 135psi and the standard should be around 178. wut ? head gasket then ?

[ChrisCantSkate]

or piston rings

[mt.biker]

Originally posted by ChrisCantSkate
or piston rings

thats what i was thinking

[ChrisCantSkate]

are you burning oil?

[ebpda9]

i dunno about oil butning part. i have a leak so i really don't know if it's butning or not. i redid the check at wot like i was supposed to do and i came with all the pistons at 185psi. wtf ? one of my friends mentioned that he saw blue smoke behind me while i was beating on the car. also my exhaust smells like unburnt gas, and my oil smells like gas too. i guess i'm dealing with a faulty pressure regulator, or a messed up fuel return line. and for the oil light i don't blame it for coming on with all the gas in it. i'll check the fpr tomorrow

[ChrisCantSkate]

blue means running rich, hence the smell of unburn gas. just wondering, ive never done a compression test myself, but i though you disconnected the spark plug for that cylender and clicked it over a few times without the car on. hrm... either way, a h22 will solve your problems.

[mt.biker]

Originally posted by ChrisCantSkate
blue means running rich, hence the smell of unburn gas. just wondering, ive never done a compression test myself, but i though you disconnected the spark plug for that cylender and clicked it over a few times without the car on. hrm... either way, a h22 will solve your problems.

yes that is how its done. that is the only method i know of checking the pressure. i dont believe there is ANY other way when you think about it.

[ChrisCantSkate]

well, he said he got 185psi at WOT... im just wondering how he took a compression test at WOT

[ebpda9]

Originally posted by ChrisCantSkate
well, he said he got 185psi at WOT... im just wondering how he took a compression test at WOT

here is how it's done:

warm up the engine
remove all the plugs, and disconect the ignition
plug the tester in the plug hole
floor the gas pedal, and turn the engine about 7 times with the starter.

[ebpda9]

and the blue smoke means burning oil. at least that's what i knew.