What causes head gasket to fail on LLY Duramax?
What causes head gasket to fail on LLY Duramax?
Head Gasket Failure is more common the LLY Duramax than any other Dmax generation. This is largely due to the huge factory turbocharger and overheating issues caused by a poor cooling system. There are other factors that can play a role too though. Aftermarket modifications can also cause these issues, especially at lower mileage.
What causes a LLY Duramax fan to overheat?
Despite these issues, a majority of LLY Duramax overheating is actually caused by other common LLY Duramax problems. Blown head gaskets, water pump failure, fan clutch failure, and even a dirty or clogged radiator can be the root cause of your overheating issues.
What are the signs of a blown head gasket?
Common Signs of Blown Head Gaskets 1 Unexplained Loss of Coolant 2 Visible leaks in the engine bay or on the floor 3 White Smoke 4 Engine overheating 5 Oil contamination More …
How long does it take to replace factory head gaskets?
Most shops will charge you 30-40 hours of labor because replacing the factory head gaskets is extremely tedious. Numerous components have to be removed including your injectors, glow plugs, EGR, exhaust components and more.
How to tell if you have bad head gaskets on your Duramax?
Once the truck is shut off, the gasket is still able to seal the low pressure coolant system from entering the cylinder. There has to be a fairly extreme failure to let coolant into the cylinders through the head gasket.
Can a warped head gasket cause a leak?
If you install a new head gasket on a warped head there is a very good chance it will leak immediately. There is often a common concern that the compression ratio will change. It will not. The bottom of the head is flat with no combustion chamber. Surfacing the head area does not change the cylinder head to piston volume at all.
Why do I need to replace my head gasket?
This is a common failure on higher horsepower engines that create cylinder pressure that overcomes the clamping load of the stock head bolts allowing the head to lift. Almost anytime you have a head lift even just once, you have compromised the integrity of the gasket and you will need to replace it.
