Mechanics

BLOWN MOTOR OR HEAD GASKET?

1994 Geo Prizm • 130,000 miles

I have a 1994 geo prizm automatic. It blows out white smoke from the tail pipe, has overheated about three times (only drove it about twelve times since I got it) it has shut off twice from being hot, has 130,000 miles on it & blows through cooliant. Also has a loud tick. My brother says its a blown motor but my boyfriend says its a blown head gasket. What do you think? Please help me know what to do.
thank you angie
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Angieeexhiiix3
July 10, 2012.



So you know for sure its coolant coming out of the tail pipe?


Saturntech9
Jul 10, 2012.
No im not sure. It only happens if im going fast, like from slow to fast. Suh as going onto the highway but when im on the highway it stops.


Tiny
Angieeexhiiix3
Jul 10, 2012.
You can rent a chemical block tester from auto zone to see if there are exhaust gases in the coolant.


Saturntech9
Jul 10, 2012.
I dont know if this helps but my brothers said its not a tock its a knock & I do have a small exaust leak.


Tiny
Angieeexhiiix3
Jul 10, 2012.
So is it using coolant or leaking coolant?Also is the knocking coming from the top end or bottom end?


Saturntech9
Jul 10, 2012.
It is using cooliant, ive put almost two full bottles of cooliant so far. & My brother said bottom of the engine but he is also 100% sure its my engine is junk, so it may not be acurate. It is very loud though.


Tiny
Angieeexhiiix3
Jul 10, 2012.
If its burning coolant that is washing your rings and cylinder walls out. Also means you have a blown head gasket crqcked head etc. If the knock is in the lower end then thats a connecting rod and could damage the crank. So sounds like your brother right.


Saturntech9
Jul 11, 2012.
Thank you for clearing that up!


Tiny
Angieeexhiiix3
Jul 11, 2012.
Your welcome anytime.


Saturntech9
Jul 11, 2012.