pistons are worped
High compression is usually caused by either excessive carbon build up, excessive fuel being injected or oil or coolant getting into the cylinder.
No, quite the opposite- the idea of gaskets is to ensure that an engine gives HIGH compression. If your car has just had a cylinder head gasket change and you are STILL getting low compression, then this suggests that the problem lies with the cylinder head itself- it may be cracked. Unfortunately there's no effective repair for this, the only solution is to get a new cylinder head I'm afraid.
There is no reset for compression. Compression is created when the piston rises in the cylinder and the valves are closed. The piston pinches the air/fuel and compresses it. If you have absolutely no compression I suspect a stuck valve.
This could be that your rings are bad or that it is saturating your cylinder walls and going by the rings can figure this out by getting compression test.
Anywhere from 80, up to 180, depending on ther compression ration, effective compression ratio, and how many miles on the motor. Lower than about 80, is getting low. Also, you are looking for a cylinder that is really low, compared to the rest. 30 lbs., or more, lower. This would indicate a dead cylinder.
The cylinder that you are checking must have the piston travel up and down 4 times are more.
A compression test can tell you many things such as if you're getting blow by. which means one of two things either all the compression ring gaps on the piston line up in sync or possibly you have a crack in your cylinder. Also if you have the distributor shaft apart from the engine a compression test will help indicate when the proper piston is at TDC (top dead center). If you get low compression on one cylinder, put a teaspoon of engine oil down the bore. If the compression improves, then you have a worn bore or rings. If there is no difference, you have a burnt valve. If two adjacent cylinders are low, it is very likely that you have a blown cylinder head gasket between those cylinders. This could also include a warped cylinder head and may need skimming.
If you're getting gasoline in the oil, then you have bad piston rings that are allowing gases into the crankcase. You can find which piston(s) have bad rings by doing a compression test; a cylinder with bad rings will have lower compression.
I would make sure power is getting to the fuel injector use a noid light to test it. You may also want to check the fuel pressure also the intake manifold may have a leak that can cause a misfire as well. Glad your compression is good. That is a sure sign its something simple.
If your antifreeze is green and it's foaming then you are getting air into the system. It is coming in by way of the water pump or you have a cylinder head gasket leaking compression.
If you are getting insulation blown upward, you most likely have a 4 cylinder engine which has a loose spark plug in the number one cylinder.
To prevent oil getting by the oil ring and compression past the others. Also, if they were in line, it would tend to make a groove in the cylinder wall.