What makes the head gasket on a GM Truck work?
No compression on two side by side cylinders. The cylinder head gaskets on your GM pickup, van or SUV are tasked with keeping three very specific components of the engine separate from one another (among several things) and these three are: Coolant. Engine oil. Compression/combustion pressures and gases.
Where does the coolant go after blowing the head gasket?
Coolant either leaks past the head gasket out of the engine or past the head gasket into the cylinder and combustion chamber. If you have an external leak you will notice coolant leaking from in between your engine block and the head. This usually will happen just below the exhaust manifold or the intake manifold.
What is the color of a blown head gasket?
CASE 1: The color of the oil is a light tan, like coffee with too much creamer. This is not good news and positively confirms that the head gasket on your 4.3L, 5.0L, 5.7L GM van (or mini-van, pick up, SUV) is blown.
What kind of gasket do I need for my GM Duramax?
The perfect replacement for your failing gasket, the Cometic C15376-062 MLX Head Gasket (.062″ Thickness, Left) provides your 2001-2016 GM 6.6L Duramax with a solid seal. Cometic is a proud American manufacturer that builds their products with American made materials.
Is there a head gasket leak on my Chevy?
There has been no overheating, just a very slight leak that might have been there for the past 1-2 years. I have always had a slow coolant leak, just not sure if it’s always been the headgasket, or if the water pump was actually leaking. Pretty sure a few of the manifold bolts are broken from what the oil change guy told me.
Why are my head gaskets on my Duramax truck failing?
One of the common issues we see with the Duramax engines is head gasket failures. The gaskets in all years of 6.6 Duramax pickups are a multi-layer steel style gasket. Over time as the head/block surfaces warp and the strength of the head bolts weaken, the head can lift causing combustion pressure to go directly into the coolant system.
Why does my car have antifreeze in the oil?
Or if you drain your oil (or see inside the sump) and it looks like chocolate milk, they are both good indicators of a leak of antifreeze into the engine oil. Blown head gaskets or leaky seals could cause this. Whatever the cause, you need to clean that gunk out, so:
When to replace the head gasket on a car?
If the needle fluctuates rapidly, the cylinder head gasket is defective and must be replaced. If the engine is equipped with two cylinder heads, it will be necessary to determine which of the two head gaskets is defective. Remove one spark plug wire at a time from its spark plug while monitoring the needle on the pressure gauge.