Mechanics

WHY WONT MY CAR START AFTER CHANGING HEAD GASKETS

1999 Pontiac Grand Am • 200,000 miles

I have a 99 pontiac grand am I changed the head gaskets before I changed them the car would start right up now that there changed the car will crank but will not start why


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Brad.landrum@yahoo.com
September 27, 2012.



Your welcome thats what were here for.


Saturntech9
Sep 28, 2012.
I found the problem there was 4 bent rods we replaced them now the car will start up if you play with the throttle but it runs really rough and will shut off after you let off the gas also there was white smoke coming out the exhaust


Bent connecting rods?


Saturntech9
Sep 29, 2012.
Yes the rods that are under the rocker arms


Why were those bent?I have seen connecting rods for the pistons bend from coolant in the cylinders but not push rods.


Saturntech9
Sep 29, 2012.
I wanna say they was bent from not being put all the way in or mixing them up bc there are 2 different sizes


Also while trying to crank it is blowing back out the breather and sounds like a clicking noise coming from a valve in the back


Have you went over all your work to make sure you dont have anymore mixed up push rods?Also have you done a compression test yet?


Saturntech9
Sep 29, 2012.
I had my wife's brother come over (a mechanic) and he mentioned that a valve is bad could this be? And they did a compression test earlier they said all was good with that


To check for a valve not sealing you would use a cylinder leak down tester. Usually if there is bad valve burnt or otherwise it will show up on a compression test. Why did he come to a bad valve?Also how come your brother inlaw didnt help you with the project?I fix my brother inlaws cars for him and he helps me do it.


Saturntech9
Sep 29, 2012.
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