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Intake manafold leaks antifreez betwine head and manafold

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Need new gaskets.

Posted on May 07, 2010

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Hi I have just rebuilt a 4.3L in a 1998 GMC Jimmy 2whell drive and it is leaking oil out of the intack manafolds builts why


If the intake is not properly put into place, oil can leak out of the ends. Use new gaskets, and silicone on the corners (2 front) (2 back). spray the gaskets with red tacky sealer, torque the intake, and make sure there is no cracks under the intake (on the bottom of it). Also if you machine too much off of the heads when you resurface them the intake may have to be machined as well. I hope this helps.

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Coolant leaking above altenator on 1991 mr2


gasket leaking it cost to fix $1000.00.Now it is stuff to fix leak from $30.00 to 50.00.head gasket fix.

Feb 23, 2013 | Cars & Trucks

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I lost my heat now I have a coolant leak my macanic says its the intake manafold is that posible?


Yep, the gasket between the manifold and head is a common cause of leaks.

Dec 05, 2010 | 1997 Ford Taurus

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Car runs fine for a while the cuts off without warnig must cool off for 15 or20 minuits before it will restart 1993 buick regal 3.1 engine


I have seen that problem occur when the engine heats up, developing pressure in the cooling system and antifreeze leaks out into the air intake or cylinders. This might be a blown head gasket or coolant leak in the intake manafold.

Jun 01, 2010 | 1993 Buick Regal

3 Answers

Loosing antifreeze but no leaks


The loss of antifreeze with no apparent leaks could be the sign of many things including blown head gasket, cracked tank, or leaking water pump. I would lean toward a head gasket first. Have you checked the oil for signs of antifreeze? A head gasket won't leak until the system is under pressure and running at normal temperature. You could also have a cracked head although that is pretty rare. Check the oil and plugs for signs of anti freeze. Also check the tanks on the side of the radiator they could be cracked which only leak while under pressure. Check all hose connections and if so equipped tranny cooler lines to make sure they are all attached correctly.

May 14, 2010 | 1999 GMC Yukon

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Oil in the antifreeze on my 2003 gand am 3.4


this is normaly a head gasket blowen out across the water jaket

Feb 21, 2010 | 2003 Pontiac Grand Am

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My blazer started this morning but was leaking antifreeze on the ground. I don't think its the water pump. could it be the intake manafold gasket? it seems to be leaking at the front of the intake.


It would either be the intake gasket, thermostat housing gasket,upper hose at the thermostat housing,or the heater hose that enters the intake.

Feb 09, 2010 | 1999 Chevrolet Blazer

2 Answers

Antifreeze leaking out of right side of engine but only when heater is turned on. doesnt leak otherwise, what could this be


Have a look for a heater control valve that may be leaking in area near firewall on passenger side, just follow your heater hoses.

Feb 20, 2009 | 1990 Toyota 4Runner

1 Answer

99 venture leaking antifreeze


Your leak is most likely the intake gaskets. These are a real common problem on these motors because they are plastic.check the mating surfaces between the heads and intake for signs of antifreeze. If it is the intake get it fixed right away or it can leak internally and cause bearing damage. Also use felpros metal gaskets.

Dec 15, 2008 | 1999 Chevrolet Venture

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