passenger side cylinder head gasket failure
passenger side cylinder head gasket failure
well it happened to my engine wednesday night on the drive home
i keep a religious eye on the temp gauge at all times .
and boom the gauge drops down to halfway between cold and normal operating temperature
AH !! CRAP!! so i quickly pull over and shut the engine down and walk across the street to a
hotel to grab some sleep and have the mazda towed to the dealership in the morning
waiting on word from the mechanic about my extended warranty coverage
i keep a religious eye on the temp gauge at all times .
and boom the gauge drops down to halfway between cold and normal operating temperature
AH !! CRAP!! so i quickly pull over and shut the engine down and walk across the street to a
hotel to grab some sleep and have the mazda towed to the dealership in the morning
waiting on word from the mechanic about my extended warranty coverage
experienced the very same problem with another vehicles engine many years ago
1 of the cylinders with a failed head gasket port was pumping air into the engines cooling system
the easy way to tell is to connect a cooling system pressure tester and let the engine warm up and watch the tester .
the pressure tester needle went to full pressure on the needle gauge
some where around 30 psi if i remember correctly
we also had a cylinder compression tester to the suspected cylinder
the other 3 cylinders held pressure , but #2 kept fluctutating
sure enough , #2 cylinder was pressurizing the cooling system , but no coolant was leaking out or into the engine oil
we tested cooling system pressure with a radiator cap that was defective and would not open at any pressure in the radiator
1 of the cylinders with a failed head gasket port was pumping air into the engines cooling system
the easy way to tell is to connect a cooling system pressure tester and let the engine warm up and watch the tester .
the pressure tester needle went to full pressure on the needle gauge
some where around 30 psi if i remember correctly
we also had a cylinder compression tester to the suspected cylinder
the other 3 cylinders held pressure , but #2 kept fluctutating
sure enough , #2 cylinder was pressurizing the cooling system , but no coolant was leaking out or into the engine oil
we tested cooling system pressure with a radiator cap that was defective and would not open at any pressure in the radiator
weird isnt it
turns out that that the coolant temperature sender requires a solid mass under pressure to properly send coolant temperature reading
water --- solid mass , cannot be mass compressed
air -- not a solid mass , can be mass compressed
several years later a machinist friend of mine and i came up with a easier and less damaging way of testing for a failed head gasket
he simply machined a piece of steel with 1 end threaded with a spark plugs correct threads and then drilled out the stock .
he then machined off the threads of a air chuck adapter and welded the adapter to the piece he machined
simply screw the adapter into 1 cylinder at a time connect a pressure controlled air hose , and watch the cooling system tester for gauge movement
turns out that that the coolant temperature sender requires a solid mass under pressure to properly send coolant temperature reading
water --- solid mass , cannot be mass compressed
air -- not a solid mass , can be mass compressed
several years later a machinist friend of mine and i came up with a easier and less damaging way of testing for a failed head gasket
he simply machined a piece of steel with 1 end threaded with a spark plugs correct threads and then drilled out the stock .
he then machined off the threads of a air chuck adapter and welded the adapter to the piece he machined
simply screw the adapter into 1 cylinder at a time connect a pressure controlled air hose , and watch the cooling system tester for gauge movement
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