Question about 1998 Chevrolet C1500

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How do I find where the antifreeze going in my 1998, 5.7 silverado, the oil is not milky, no white smoke out of exhaust, no puddles on the floor?

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If you haven't found the problem already. I suggest looking at the drivers side radiator tank they usually crank and seep slowly. If not leaking there, it's probably the intake gasket. Both of these problem are common to this make and model.

Posted on Sep 02, 2014

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Posted on Jan 02, 2017

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cincinaty5
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SOURCE: 99 Chev suburban 5.7 liter, antifreeze keeps

check the condition of the reserve tank and the hose from the reserve tank to the radiator for leaks if no leaks there have the Radiator cap presure tested . also this could be a air lock in the engine if the radiator is new with the engine running and the heater on hot observe the fluid level in the radiator with the cap off if it drops as it warms add more coolant this will purge the air .

Posted on Aug 27, 2009

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SOURCE: 2001 chevy silverado 5.3 ltr I am adding 1 gallon

This is one that you will need to do some careful looking to find. every hose connection needs to be looked at for damp residue as well as all gasket parting lines (thermostat housing, head to block parting lines, intake manifold ends etc.) You may also need to have a shop to a radiator pressure test as well as a cylinder leakdown test (which will pick up on most internal leaks) If seepage is very minor, coolant can burn off or boil out before reaching a noticeable level inside the engine or even at a gasket to the outside. A small crack between the valves in a cylinder head can be so small that it goes unnoticed when exiting along with exhaust. A small leak now may be difficult to find but locating it now is better than waiting for a larger failure. It may turn out to be something simple as a bad cap on the radiator or the shaft seal beginning to fail on your water pump...letting it go can eventually cost you an engine.

Posted on Aug 27, 2009

rtpflh
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SOURCE: 2001 CHEVY SILVERADO 5.3 Z71 The truck uses 1 gal of antifreeze

check for a wet tailpipe,which might indicate a leak between water jacket & combustion chamber.i.e.headgasket.check heater hose isn't leaking onto exhaust manifold,'cooking' the anti-freeze as it leaks.

Posted on Oct 05, 2009

SOURCE: if my car has some white smoke coming out the tail

If you have steady thick white smoke and it smells like anti freeze it is most likely the head gasket. The head gasket can fail in different areas. If it has white smoke it failed between a coolant passage and the combustion chamber. If the oil is milky it failed between the coolant passage and an oil passage. Just because the oil isn't milky doesn't necessarily mean that the head gasket it's blown.

Posted on Oct 06, 2009

  • 79 Answers

SOURCE: Have some white, milky looking substance on the dip stick

I'd be tempted to live with it depending on whether the vehicle is using coolant on the assumption that it is condensation causing the saponification of the oil. If the Lucas oil treatment caused the pressure to rise so dramatically I would suspect that some crud has come adrift and lodged in the pressure sender.
The chance that the cylinder head is cracked would be more rare than a leaking head gasket both of which could possibly be tested by a leakdown test of individual cylinders.
The water has to come from somewhere.
Does the soap go away when the engine is warmed up?

Posted on Dec 21, 2009

Testimonial: "Good point on the pressure issue, not using coolant. Dip stick had rust on it and so did the inside of the fill cap. Hot or cold white on the stick."

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2 Answers

White smoke from exhaust


Head or intake gasket is bad check oil and see if it is milky looking.if yes antifreeze is getting in oil. Check antifreeze is it milky or oily . if yesoil getting in antifreeze. Both will be over full.or the head or engine block itself could be cracked.

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Loosing antifreeze (no leaks anywhere) white smoke from exhaust and exhaust smells like antifreeze check my oil and oil is clean added antifreeze directly to radiator (guy from advanced auto told me to do...


Your intake manifold may be cracked. It is plastic and is know to cracking. If you take a flash light and look behind the intake, you should see a small puddle of antifreeze or a slight crack. You will need to replace the intake manifold and the gasket, possible do a complete head job on the car since it is already leaking through.

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I have a nissan sentra eccs with automatic transmission 1993 model, the exhaust is releasing a lot of white smoke, is this normal?


sorry but if you have white smoke coming out your exhaust, most likely you blew a head gasket. antifreeze is leaking into your exhaust and out the tailpipe. check your engine oil dipstick and see if the oil is a milky color. your local auto parts store sells a temp fix for it just ask for a head gasket sealer. good luck

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blown head gasket,check oil for water in oil,gray milky look,check antifreeze in radiator for color,check exhaust for white smoke or water-coolant if its going out exhaust gasket blown inbetween cylinders,see if pushing antifreeze out of radiator etc.check radiator for leaks pressure test it,cap on radiator bad?

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2001 Chevy Silverado 1500 Z-71. Coolant loss with no noticeable puddles or wet connections.


First- When was the last time you checked it & it was full?
Second- Is a lot missing (1/2 gallon)?
Third- check the oil dipstick for any antifreeze in there or any white smoke from the exhaust,that would indicate a possible head gasket leak.
Fourth- Do you smell antifreeze inside the truck? Look for a small leak under the glove box in the dashboard for the heater core.
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Jan 06, 2011 | 2000 Chevrolet Silverado

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Have a 3.0 liter v6 engine and white smoke and antifreeze coming out of the exhaust pipe,head gaskets or something ?


sounds like a head gasket to me, check the oil and see if there are any signs of water contamination ( milky looking oil -- but this is not always the case ). if the gasket failed between the water jacket and the cylinder then you will just get the ' white smoke '( steam ) coming from the exhaust pipe,, do not run the truck until this is fixed as this can also cause cylinder and rod damage.

c...

Dec 31, 2010 | 1994 Ford Ranger Supercab

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White smoke from exhaust


Good check you have done.
Good for you head gasket is still good.
Bad stem valves can let the oil leak in to the combustion chambers causing smokes. Since the engine is Shaky on acceleeration, you need to check the compression presure to see if valves not seating properly ( poor compression ) besides the stem valves. Good luck.

Sep 12, 2009 | Toyota Supra Cars & Trucks

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White smoke exhaust


White smoke is caused by coolant or water coming out the tail pipe. There is a chance that the white smoke was caused by water splashing up from a puddle onto the exhaust pipe. Keep an eye on the coolant level in the radiator in any event. If its less then there leak coolant leak in the car engine which is causing this problem....

Oct 18, 2008 | 1988 Isuzu Impulse

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