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If the engine has been running without a leak and now it's started you probably have a bad water pump.

AnswerMost likely what you have is blown intake manifold gaskets allowing the leak.The engine will still run smoothly but is allowing water to leak and worst of all,allowing air into the cooling system.This is a problem because these particular engines will not self bleed the air out when you add more water to the radiator.this WILL cause the engine to overheat without warning and ruin an otherwise good engine.PARK the car until the gaskets are changed and cooling system properly bled.I recently changed three of these 3100 sfi engines out for customers due to this problem.
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โˆ™ 2011-09-13 17:53:42
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Q: What would cause an antifreeze leak around the timing chain cover of a 1996 Grand Am 3.1?
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No, but the water pump is usually located near this and that is probably what is leaking. .

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the timing could be off. check the timing

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Intake manifold gaskets are leaking, intake manifold is warped.

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a timing chain has broken

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An antifreeze leak.An antifreeze leak.

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Perhaps your timing.

Milky white oil on dipstick of my 1994 Grand AM?

antifreeze leaking into the engine base. a cracked clyd. head or blown head gasket is probable cause

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A bad head gasket is the most common cause of antifreeze mixing in the oil. The antifreeze will dilute the oil and it will eventually cause your engine to seize up.

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If it is leaking antifreeze around the oil pan it probably is either your head gasket or the manifold gasket and the best way for u 2 b able 2 tell the difference from the two is 2 start it up let it run for about 10-15 MINS so that it warms up. Cut it off then check your filler cap and c if its milky if it is its your head

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Your intake manifold probably has a crack in the water jacket.

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It should be ok as there is nothing too terrible in the coolant. Excess antifreeze will just overflow. Try and get some out. Antifreeze can cause paint issues if the concentration is high enough...RR

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wrong timing can cause any engine to over heat. in fact if the timing is off it can cause hundreds of dollars of damage.