Mechanics

HOW TO KNOW IF I HAVE A BLOWN HEAD GASKET

1998 Pontiac Bonneville • 240,000 miles

How can I tell if I have a blown head gasket in my 1998 pontiac bonneville
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Ray9191
January 24, 2012.




You can rent a chemical tester from auto zone and its really easy to use if it changes color you have exhaust gases in your coolant.


Saturntech9
Jan 24, 2012.
It can be very difficult to confirm. There are a number of test that can be performed including, chemical block test, cylinder leakdown test, coolant pressure test, exhaust analyzer to sniff for HCs at the radiator, observing white smoke out the exhaust or constant bubbling in the radiator. You would need to confirm it through a few different tests.


Wrenchtech
Jan 24, 2012.
Have it block and pressure tested


Tiny
Rasmataz
Jan 24, 2012.
I posted a fairly log answer to this earlier but apparently it never posted although it did start sending me notifications of other responses.
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Wrenchtech
Jan 25, 2012.
I see a coolant leak and I only see white smoke when I 1st start my car than it goes a way here is a picture of where it leaks from


Tiny
Ray9191
Jan 25, 2012.
I don't see the actual leak but your picture is of a plastic elbow attached to the belt tensioner that carries coolant. This elbow rots and leaks all the time. When you remove it you will have to dig out the broken pieces from the engine and tensioner.


Wrenchtech
Jan 25, 2012.
Ok because I though it was my intake manifold because it had a crack but I replaced it and the gasket for it but I only see it shoot out when I rev my car could there be some coolant still down there and its just blowing out the coolant that was still in there


Tiny
Ray9191
Jan 25, 2012.
Pressure test the cooling system as you should have done first.


Wrenchtech
Jan 26, 2012.
How do I pressure test my cooling system


Tiny
Ray9191
Jan 27, 2012.
Its easy just get a cooling system pressure tester and read the operating instruction-it will walk you thru-


Tiny
Rasmataz
Jan 27, 2012.

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