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Posted by dsm92talonboost, May 11, 2012
Newbie Forum - Beginner/newbie/general DSM modification questions. First mods, how to run 10's when you haven't run 12's yet, any tech question that doesn't fit in another tech forum.
Rotate the crank so all 4 pistons are at mid stroke.
Pour oil on tops of all 4 pistons, about an inch or so.
Let sit for several hours/overnight.
If they are good you will still have equall amount of oil on top of the piston.
If one cyl is lower than the rest, you stand a good chance of a ring issue in that hole.
Do this with every cylinder.If there is a big difference between the numbers (before you put oil into it and after), your piston rings may gone bad. the oil improves the compression so the numbers should be higher. If there is no significant difference, you should look at your valvetrain(seats or valves itself - yesterday I saw a head with a broken valve. this cylinder got zero comression). your rings should be okay.
I hope you guys get what I want English is not my mother tongue.
im familiar with this test, just have to remember im in the process of pulling the head right now. and just got my head back from the shop with new supertech valve seals and valve guides and crower springs and titanium retainers.
Harbor Freight. If the rings are bad in a cylinder, you'll hear hissing from the oil dipstick tube. The kit comes with instructions that tell you everything.
Yes. I replaced all lo them and the car ran for ten min till my trans broke
It won't be accurate if the valves are bent. But otherwise, yes. This is a good way.
That was probably the reason it was smoking. I mean if it was smoking before you changed that and now it's not. I feel that is safe to ASSume.