Why is coolant leaking out of the spark plug?

Pulled the spark plug out and the boot was wet with coolant half way up. I pulled the plug cleaned out the hole. Re-installed the plug and it fired fine for about 5 min. Then stated mis-firing again. I’m thinking its a intake gasket leaking coolant into the cyl. #5 spark plug well. But does this sound likely to anyone else?

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.

Why do I have a leak in my head gasket?

Leaks are a manifestation of a bad gasket. These leaks are commonly seen in your spark plugs so it only makes sense for you to remove the spark plugs for inspection. Do this right by pressuring the cooling system once you’ve removed the spark plugs.

When to remove spark plugs for head gasket?

This test is not always reliable when detecting a head gasket. So it’s best to move on to other tests until you’ve exhausted all options. 2. The Spark Plug Test Leaks are a manifestation of a bad gasket. These leaks are commonly seen in your spark plugs so it only makes sense for you to remove the spark plugs for inspection.

Where are the coolant holes on a Chevy engine?

Besides the reduction in size of the top coolant holes, the large coolant hole on the bottom right of the superimposed gasket above is partially blocked off. There are also holes in the gasket which are not open in the block. Some Big Block Chevy engines have these holes while others do not.

Are there holes in the head gasket on a Chevy?

There are also holes in the gasket which are not open in the block. Some Big Block Chevy engines have these holes while others do not. This will depend on the generation, application and the intended use of the block.

Where does the coolant go in a head gasket?

The holes in head gaskets meter the flow of coolant properly through the heads. In most engines, coolant flows from the water pump at the front of the engine block toward the rear, goes up into the head(s), to the thermostat and finally to the radiator once the thermostat opens before returning back to the water pump.

Why do I have a hole in my spark plug?

I would look top side for a coolant leak that is spraying coolant into the top of the spark plug well. Check your hoses near the valve cover one might have a pin hole in it. Also if you have a old set of spark plug wires laying around cut the lip from around the boot where they seal up the spark plug well.