Question about 1998 GMC Sierra

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Loosing water through intake gasket.if not fixed within a few weeks /what problems can incue

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Engine seizure which will destroy your engine for good

Posted on Feb 06, 2010

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Posted on Jan 02, 2017

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1 Answer

Coolant level keeps getting very low?


Check the upper intake gasket, you may have a leaking gasket. Check the bottom of water pump and see if it is leaking, if so pump needs replaced. The seal within the water pump sometimes goes bad and leaks out seep hole on water pump bottom. Make these checks with engine off!!! God-Bless!

Nov 14, 2015 | Cars & Trucks

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Transmission rebuilt, leaking at o ring to radiator, now leaking antifreeze intake gasket


While it is possible, any seal could go at any time, I do not blame you for being suspicious. I would check the intake bolts for a loose one (better done before complaining about second leak - little to no chance for a re-tighten if done on purpose). Note: it is possible for a bolt to loosen on it's own. I also suggest taking the vehicle to another garage and explain the situation to them with a request to look for tampering. You might want to speak with the police before taking any further steps in case they wish a report filed.

Mar 24, 2014 | 2001 Chevrolet Blazer

1 Answer

White smoke coming from engine and exaust.


I'd have to see it in person. A small amount of coolant in the cylinders can make a big cloud of white smoke. So a head gasket or intake gasket could be leaking but yet be tough to find. If you start loosing coolant you'll know. Meanwhile I would probably not drive it very far from home for a few days/weeks.
Keep in mind, if it is very cold where you are, regular water in the exhaust is going to cause "fog" out the exhaust.

Jan 24, 2014 | Mazda Cars & Trucks

1 Answer

4.7 L diesel loosing coolant, can't find source. Running great but starts hard when cold.


The White Exhaust is coolant--you know that

You know your loosing coolant-for 7 months

The people you went to know the issue

So why haven't you had it repaired

HEAD GASKET OR INTAKE GASKET

May 26, 2012 | 2005 Jeep Liberty

1 Answer

1994 thunderbird. has been running fine past few weeks. made it to florida for a week and back. no problems. several weeks before, possible stuck thermostat. had a couple of backyard mechanics change...


Hello, Probably the easiest thing to do is drain the oil and see what it looks like. If it is okay, then invest in a new oil pressure sending unit and change the oil filter. For awhile there were bad Fram filters and others with bad relief valving in the oil filter.

If the oil has Antifreeze in it, then it is pretty much a given that a head gasket is bad. You should check your sparkplugs anyway for signs of water/antifreeze contamination if the engine is blowing the Antifreeze out of the exhaust. This can help show you if only one head gasket is bad or if both are bad.

I hope you either bypassed the heater core or fixed it. Another gasket that can get Antifreeze into a cylinder is the Intake manifold gasket. The newer cars usually have only air coming into the engine through this manifold. You need to look at where the top Radiator hose enters the engine. If the hose enters on the block, you are probably good for the Intake gasket.

But if the top Radiator hose attaches to the Intake manifold, a loose Intake can leak Antifreeze into the heads through the ports on the Intake. It can also cause a lack of power and poor idle. If the Intake gasket IS your problem, the head gaskets can be fine. The Intake gasket is reasonably inexpensive.

I can tell you that a loose Intake can be checked for air leaks by running the engine and spraying a water mist from an old detergent bottle around the seams of the Intake. The engine speed will change or stall if the water is drawn in. The Antifreeze leak can not be checked by this method.

I hope my solution helps you find your problem.

Jul 25, 2011 | 1994 Ford Thunderbird

1 Answer

MERCEDES SLK 200 MANUAL 17,000 MILES Reg. 2006 Water coolant warning light. Topped up with coolant After six weeks warning light came on Topped up again After six weeks warning light again Took...


the problem could be as simple as a faulty radiator cap from your description the water that is expelled when it gets hot is not being drawn back as the radiator cools down
could be a leak in the reservoir hose
I am thinking that the low coolant sensor in the top of the radiator tank is getting an air space and that is what is activating the light
I don't think it was head gasket problem as you would be overheating or loosing coolant within days not weeks I would go to an accredited radiator specialist shop and have a pressure test done for leaks in the system including the water pump leaking when running
I am saying that the vacuum created as the coolant cools down is not as good as it should be to draw water back from the reservoir to keep the radiator full to the cap

Apr 03, 2017 | Mercedes-Benz SLK Cars & Trucks

1 Answer

Water running out from top of motor. Intake Gasket?


The lower intake manifold gasket will be the problem. This is a high failure rate item and GM has redesigned the gasket a couple times in an attempt to correct it. Currenty Napa has the best replacement gasket and it is known as a "Perma-Dry".
I have done many and have never seen a warped intake. It's worth the fix, take your time and torque the gasket as per the instructions provided.
Good luck

Apr 01, 2010 | 1999 Chevrolet Blazer

2 Answers

98 Pontiac Grand Prix Overheating


YOU NEED TO REPLACE THE UPPER INTAKE MANIFOLD. ALSO, YOU WILL NEED TO REPLACE THE LOWER INTAKE MANIFOLD GASKETS. THIS IS A MANUFACTURING FLAW. THE PLASTIC INTAKE CRACKS CAUSING AN INTERNAL COOLANT LEAK. YOU CAN RESEARCH THIS ON LINE.

Apr 22, 2009 | 1998 Pontiac Grand Prix

2 Answers

1999 GMC Jimmy Running Hot w/ Engine coolant reservoir empty


I guess the burning question is , where is the coolant going.
Is this a 4.3 engine? How many miles does the vehicle have?
Has the intake gasket been changed?
I'm guessing a can of "Bars Leak" may cure your problem.
Let me know.
Regards,

Apr 03, 2009 | 1999 GMC Jimmy

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