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Old 02-07-2012, 06:45 PM
GT55 GT55 is offline
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94 Jimmy, Coolant leaking out exh manifold

In short: 94 Jimmy, 200K miles, Vortec V6, CPI. The vehicle got HOT after a seized up pulley bearing. I now have coolant leaking out the drivers side exhaust manifold. Where the manifold meets the exhaust pipe. I am assuming a cracked head, bad head gasket or bad intake gasket. Since it's been so long since I've done any head work, I'm calling on ya'lls expertise. What to check first? To pin point the fix. Compression check, etc? Hate to pull the head if I don't have to.
The leaking out the exhaust manifold is the only appearent problem but if ya'll have question I will be glad to supply answers.
Thanks Guys
GT
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Old 02-08-2012, 09:18 AM
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MT-2500 MT-2500 is offline
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Re: 94 Jimmy, Coolant leaking out exh manifold

Quote:
Originally Posted by GT55 View Post
In short: 94 Jimmy, 200K miles, Vortec V6, CPI. The vehicle got HOT after a seized up pulley bearing. I now have coolant leaking out the drivers side exhaust manifold. Where the manifold meets the exhaust pipe. I am assuming a cracked head, bad head gasket or bad intake gasket. Since it's been so long since I've done any head work, I'm calling on ya'lls expertise. What to check first? To pin point the fix. Compression check, etc? Hate to pull the head if I don't have to.
The leaking out the exhaust manifold is the only appearent problem but if ya'll have question I will be glad to supply answers.
Thanks Guys
GT
99 times out of a 100 it is head/or gasket leakage.
1 chance out of a 100 intake gasket leaking into cylinder.

If engine running it is building pressure in radiator it has headgasket/cracked head.

Pull plugs on that side and look for what cylinder has coolant in it.
remove radiator cap and Put air pressure on that cylinder and see if it blows air out radiator fll cap.
If so pull head and repair gasket and head.
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