Why wont my car start after changing head gaskets

Tiny
BRAD.LANDRUM@YAHOO.COM
  • 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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Thursday, September 27th, 2012 AT 10:47 PM

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Tiny
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Was all cam timing done correctly?Do you have spark?Have you checked compression?Actual fuel pressure is what?

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Thursday, September 27th, 2012 AT 11:15 PM
Tiny
BRAD.LANDRUM@YAHOO.COM
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I never took timing cover off so timing should be fine I have spark and I didn't do a pressure test but there is good pressure on the lines

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+1
Friday, September 28th, 2012 AT 12:11 AM
Tiny
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Which engine do you have?Also have you checked for spark compression etc?

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Friday, September 28th, 2012 AT 12:18 AM
Tiny
BRAD.LANDRUM@YAHOO.COM
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I have the 3.4 v6 and I have spark

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Friday, September 28th, 2012 AT 12:27 AM
Tiny
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Have you checked the compression yet?

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Friday, September 28th, 2012 AT 12:32 AM
Tiny
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No how do I check

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Friday, September 28th, 2012 AT 1:14 AM
Tiny
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You cant a compression tester at auto zone and then remove all you spark plugs. Then screw the compression tester into each cylinder then hold the gas pedal to the floor and crank the engine ten revolutions and record the number. Before doing that pull the injector and ignition fuses. Also did you make sure there were no blown fuses?

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Friday, September 28th, 2012 AT 1:46 AM
Tiny
BRAD.LANDRUM@YAHOO.COM
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Yes I checked all fuses all are good

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Friday, September 28th, 2012 AT 3:41 AM
Tiny
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Alright keep me posted.

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Friday, September 28th, 2012 AT 4:39 AM
Tiny
BRAD.LANDRUM@YAHOO.COM
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I will and thank you

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Friday, September 28th, 2012 AT 12:53 PM
Tiny
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Your welcome thats what were here for.

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Friday, September 28th, 2012 AT 3:54 PM
Tiny
BRAD.LANDRUM@YAHOO.COM
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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

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Saturday, September 29th, 2012 AT 1:32 AM
Tiny
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Bent connecting rods?

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Saturday, September 29th, 2012 AT 1:45 AM
Tiny
BRAD.LANDRUM@YAHOO.COM
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Yes the rods that are under the rocker arms

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Saturday, September 29th, 2012 AT 1:49 AM
Tiny
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Why were those bent?I have seen connecting rods for the pistons bend from coolant in the cylinders but not push rods.

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Saturday, September 29th, 2012 AT 1:53 AM
Tiny
BRAD.LANDRUM@YAHOO.COM
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I wanna say they was bent from not being put all the way in or mixing them up bc there are 2 different sizes

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Saturday, September 29th, 2012 AT 1:56 AM
Tiny
BRAD.LANDRUM@YAHOO.COM
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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

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Saturday, September 29th, 2012 AT 2:01 AM
Tiny
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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?

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Saturday, September 29th, 2012 AT 2:17 AM
Tiny
BRAD.LANDRUM@YAHOO.COM
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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

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Saturday, September 29th, 2012 AT 2:34 AM
Tiny
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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.

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Saturday, September 29th, 2012 AT 2:45 AM

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