When to remove the head gasket on a Nissan?
The intake cam is at the most retarded position when the engine is off and has to be locked in the most advanced position for removal. Nissan uses an internal lock pin in the pulley that has to be released, so you can put the cam in the advanced position and lock it there.
Can a head gasket be replaced on a rebuilt car?
In most cases, it’s simply more efficient to replace a badly damaged engine with a rebuilt or recycled unit, getting the car out of the shop and back to the customer in a timely manner. Lately, the only engine work we seem to be doing is cylinder head gasket replacements.
Which is the most reliable test for head gasket replacement?
We find the most reliable test to be a cylinder leak-down test that rarely misses a problem and gives us the added advantage of knowing which cylinder is leaking. This lets you look more closely at that cylinder for cracks or problems that will affect the success of the repair.
How to change a head gasket on the 2001 Nissan Sentra?
Cylinder head gasket replacement on a 2001 Nissan Sentra is a major repair to the engine. The head gasket’s job is to seal the combustion chamber and coolant passages. Expect it to take a couple of days of steady work to replace the head gaskets on your 2001 Nissan Sentra. Disconnect the negative cable from the battery.
Why do I have to replace my head gasket?
Lately, the only engine work we seem to be doing is cylinder head gasket replacements. Some of these replacements stem from design issues that show up as the mileage accumulates, but most are the result of overheating. Like any repair, the diagnostic process begins at the service counter.
How to Ream a Nissan Sentra cylinder head?
Ream cylinder head valve guide hole using suitable tool (A). Heat cylinder head to 110 to 130В°C (230 to 266В°F) by soaking in heated oil (A). Cylinder head contains heat. When working, wear protective equipment to avoid getting burned.
What should inlet pressure be for Nissan head gasket?
We use 100 pounds as an inlet pressure giving us the percentage of leakage. Of course, the cylinder has to be at TDC on the compression stroke so both valves are closed. This seems to be where most techs struggle when performing this test. I find it easiest to start with the number one cylinder and follow the firing order.