SPONSORED LINKS

Why wont my car start after changing head gaskets

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

30 Replies

Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
Was all cam timing done correctly?Do you have spark?Have you checked compression?Actual fuel pressure is what?
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Thursday, September 27th, 2012 AT 11:15 PM
Tiny
BRAD.LANDRUM
  • MEMBER
  • 14 POSTS
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
Was this
answer
helpful?
Yes
No
+1
Friday, September 28th, 2012 AT 12:11 AM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
Which engine do you have?Also have you checked for spark compression etc?
Was this
answer
helpful?
Yes
No
Friday, September 28th, 2012 AT 12:18 AM
Tiny
BRAD.LANDRUM
  • MEMBER
  • 14 POSTS
I have the 3.4 v6 and I have spark
Was this
answer
helpful?
Yes
No
Friday, September 28th, 2012 AT 12:27 AM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
Have you checked the compression yet?
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Friday, September 28th, 2012 AT 12:32 AM
Tiny
BRAD.LANDRUM
  • MEMBER
  • 14 POSTS
No how do I check
Was this
answer
helpful?
Yes
No
Friday, September 28th, 2012 AT 1:14 AM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
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?
Was this
answer
helpful?
Yes
No
Friday, September 28th, 2012 AT 1:46 AM
Tiny
BRAD.LANDRUM
  • MEMBER
  • 14 POSTS
Yes I checked all fuses all are good
Was this
answer
helpful?
Yes
No
Friday, September 28th, 2012 AT 3:41 AM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
Alright keep me posted.
Was this
answer
helpful?
Yes
No
Friday, September 28th, 2012 AT 4:39 AM
Tiny
BRAD.LANDRUM
  • MEMBER
  • 14 POSTS
I will and thank you
Was this
answer
helpful?
Yes
No
Friday, September 28th, 2012 AT 12:53 PM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
Your welcome thats what were here for.
Was this
answer
helpful?
Yes
No
Friday, September 28th, 2012 AT 3:54 PM
Tiny
BRAD.LANDRUM
  • MEMBER
  • 14 POSTS
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
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Saturday, September 29th, 2012 AT 1:32 AM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
Bent connecting rods?
Was this
answer
helpful?
Yes
No
Saturday, September 29th, 2012 AT 1:45 AM
Tiny
BRAD.LANDRUM
  • MEMBER
  • 14 POSTS
Yes the rods that are under the rocker arms
Was this
answer
helpful?
Yes
No
Saturday, September 29th, 2012 AT 1:49 AM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
Why were those bent?I have seen connecting rods for the pistons bend from coolant in the cylinders but not push rods.
Was this
answer
helpful?
Yes
No
Saturday, September 29th, 2012 AT 1:53 AM
Tiny
BRAD.LANDRUM
  • MEMBER
  • 14 POSTS
I wanna say they was bent from not being put all the way in or mixing them up bc there are 2 different sizes
Was this
answer
helpful?
Yes
No
Saturday, September 29th, 2012 AT 1:56 AM
Tiny
BRAD.LANDRUM
  • MEMBER
  • 14 POSTS
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
Was this
answer
helpful?
Yes
No
-1
Saturday, September 29th, 2012 AT 2:01 AM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
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?
Was this
answer
helpful?
Yes
No
Saturday, September 29th, 2012 AT 2:17 AM
Tiny
BRAD.LANDRUM
  • MEMBER
  • 14 POSTS
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
Was this
answer
helpful?
Yes
No
Saturday, September 29th, 2012 AT 2:34 AM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
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.
Was this
answer
helpful?
Yes
No
-1
Saturday, September 29th, 2012 AT 2:45 AM

Please login or register to post a reply.

Related Cylinder Head Gasket Replace/Remove Content

VIEW MORE

Sponsored links