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1998 Pontiac Bonneville Repair Question


Topics covered: Coolant, Gas, Head gasket.
Mileage: 240,000 miles.

Asked on January 15, 2012

How do i know if my head gasket is blown or the seal is broke

I think my head gasket is blown but i cant tell for sure
Avatar Asked by ray9191

Answer

Replied on January 15, 2012

what are the symptoms? is it over heating? is the oil mixing with coolant or vice versa?

Tiny Answered by jacksprat
1 question asked
Replied on January 15, 2012

You can use a chemical tester which you can rent at auto zone to see if you have a head gasket or cracked head issue.

Tiny Answered by saturntech9 (expert)
23,174 answers provided
Replied on January 15, 2012

its not over heating but i can see coolant come out the passenger everytime some one revs the car and i can smell it

Tiny Response from ray9191
12 questions asked

Replied on January 15, 2012

If you don't have any water in your oil and vise versa auto zone also has a compression checker you can borrow to check the compression of each cylinder.

Tiny Answered by M_H_RITZEL (expert)
2,685 answers provided
Replied on January 15, 2012

Where does compression come into play here?There talking about coolant.To find a blown head gasket you use a chemical tester to see if exhaust gases are entering the coolant from a bad head gasket.Where is the coolant coming from when you rev it up?If its just leaking coolant then i would use a coolant pressure tester to pressurize the cooling system.If you think its leaking coolant externally because of a bad head gasket or something like a cracked head you can use a cylinder leak down tester.I have used those to find exhaust ports leaking coolant from bad heads etc.

Tiny Answered by saturntech9 (expert)
23,174 answers provided
Replied on January 15, 2012

here is a pictue where it leaks from

Tiny Response from ray9191
12 questions asked

Replied on January 15, 2012

What size engine do you have?

Tiny Answered by saturntech9 (expert)
23,174 answers provided
Replied on January 15, 2012

it is 3.8l v6 3800 series

Tiny Response from ray9191
12 questions asked
Replied on January 15, 2012

I see what your saying, After reading post again realized it was running all right just leaking fluid. Had one that kept missing from crack in cylinder wall.

Tiny Answered by M_H_RITZEL (expert)
2,685 answers provided
Replied on January 15, 2012

Yeah it does not over heat it just leaks and makes a little grinding but I replace the intake about 3 years ago this all started when my friend floored it going around a coroner

Tiny Response from ray9191
12 questions asked