What's is the compression in the cylinders? I'm having the same problem right now in my 90. I'm getting 165 in 5 of the cylinders, and 150 in one. The local Z shop said it was no big deal, and that you can allow up to 14 or so psi difference (especially if the car is 20 years old). If it's more off than that, I would recommend you take it to a mechanic. I know it could be a lot of things, normal wear on cylinder walls, worn piston rings, or a head gasket, etc.
how to fix a cylinder #1 has low compression diagnose on 2.9 chvy colorado 2007
No compression could mean a blown head gasket, cracked head or cylinder.
For your own safety replace, do not repair
Start with removing the cylinder head to determine the cause of no compression. If it is a valve problem, have the head rebuilt. If it is a piston or piston ring problem, remove the engine for rebuilding or replacement.
I suppose that the recommended solution is to send this cylinder to metal scrap.
Refer to (and understand) repair manual
sounds like your engine needs a valve job worn piston rings would also cause low compression ,but not cause the backfireing
Free Nissan Repair Service Manuals - cardiagn.com/category/nissan-repair-service-manuals/
You don't repair compression rings you replace them.
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.
"Chiltons Repair Manual" usually available at local library.
refer to repair manual for proper specs, can be found at local library or bought at auto parts store