Question about 1999 Pontiac Grand Am GT

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I have a 1999 Pontiac Grand AM. There is water and steam coming out of the tail pipe probably a cracked head or block is there anything I can do short of replacing the engine? Any kind of an additive I can use for a quick fix?

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Not really. I would suggest rebuild top end , Rework heads head gadket set

Posted on Mar 17, 2010


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R/T. overheated. Why is white smoke coming from the tailpipe?

might be steam coming out tail pipe. If steam you may have a blown head gasket which could put water into the cylinder that gets turned into steam and put out tail pipe.
If compression is getting into cooling system via blown head gasket then pressure builds in cooling system. A radiator repair place may be able to pressure test via the radiator cap to see if this is occurring while the engine is running.
If you have an alloy head you may also have cracked the head
A warped head is another possible problem .
This is expensive to fix as the engine head has to be sent to a head repair place to be fixed.
A compression test on your cylinders may give a diagnosis on if there is a head gasket problem .
The warps or cracked head can only be found out when the mechanic checks the head after pulling the top of the engine apart.

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White smoke

from where, end of tail pipe or ?????????????
tail smoke has 2 types,. oil and steam.
1: steam smells sweet(glycol) and goes away fast.
2: oil smoke, smells like burnt oil and takes a vary long time to go byebye.

or is normal.
all cars burning gasoline make water (H2O) as a byproduct, of combustion the seems to go away on a hot day.
but really does not, it just seems to.
on a cold day all cars make steam
if yours is and your neighbors car dont at the SAME time (out door temps same) then your steam is wrong. a bad sign of bad head gasket or far far worse , a cracked head.
did you do the pre fall service, and check antifreeze protection levels.
a $2 tool that save cracked engine blocks.

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1 Answer

My 98 firebird tail pipe blows white smoke and water out the tail pipe then as i let it sit for 30 minutes the engine gets hotter then gas like smile and heavier smoke come out the tail pipe it also s

One of the main causes of white exhaust smoke and coolant loss is a cracked or warped cylinder head, a cracked engine block, or head gasket failure caused by overheating. A cracked head may allow coolant to leak into one or more cylinders or into the combustion chamber of the engine. Dirty coolant, a poorly maintained cooling system, a low coolant level, or a non-functioning cooling fan can cause engine overheating. In addition, engine wear can eventually cause the gaskets to lose their capacity to seal properly allowing internal coolant loss. Intake manifold gasket and head gasket failures are two of the most common sources of internal coolant loss caused by engine wear.

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My 1999 pontiac grand prix gtp supercharger has been overheating and when i went to start it the next morning it is making a knocking nosie do you think the engine is blowen

You can check the oil to see if it has water in it if it does it will be milky looking and another thing you can check is the tail pipe and see if it is sucking back or has steam coming out of it.

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head or head gasket. could be cracked block(rare) also

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