Question about 1999 Pontiac Grand Am GT

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Problems refiring 99 pontiac grandam gt 3.4 v6

I recently replaced the head gaskets on my 99 pontiac 3.4 gt i have everythiing put back on and torqued to specs but motor will not fire, it rotates sputters when i step on the gas and a small flame comes out the throttle body. any ideas feel free to call me at 623-418-5623

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  • 142 Answers

That is an intake backfire, meaning you have the valve timing wrong. Not quite sure right now on what it should be but check timing belt position and valve timing gear positions.

Posted on Aug 28, 2008

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I just replaced the head in my 99 neon and i'm blowing white smoke from the exhaust. What's the problem


You are burning coolant, the head gasket can be put on Wrong, If your looking at the engine the right rear corner is the only oil passage for the head, you will see a difference in that corner of the head gasket. If your sure that the gasket is on right you may have a warped or cracked head or improper torqued head, all head bolts MUST be replaced when you do a new gasket cause the bolts stretch when torqued. The spec is 25, 50 then 50 then 1/4 turn for the bolt torque.. Make sure u start from the center of the head.

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4.3 v6 head gasket torque schematic


first round is at 22lbs, second 44lbs, third 66lbs. make sure you get the order in which the bolts need to be tightened as not to warp the cylinder head, and that sequence is in the package your new head gasket (s) came in. If you cant find it, your local garage will photocopy it for you.

Aug 01, 2010 | 1999 Pontiac Grand Am GT

1 Answer

What is 2004 grand prix gt 3.8 engine head torque table


Go to autozone.com create a free account put in you cars model year etc... then look at the free manual for replacing head gasket it will have a bolt tightening sequence diagram. also they usually have to be taken off in a paticular sequemnce to avoid warping the head. If aluminum heads they usually recommend new head bolt set and having the head shaved (Leveled)

Jul 13, 2010 | 2004 Pontiac Grand Prix

4 Answers

99 GrandAm GT v6 3.4L overheating


Can't give you a definite "fix" only because I'd need to do testing. But, two items you need to have checked are: 1. have a hydrocarbon test done fro the cooling system to verify that you do or don't have a head gasket problem. 2. have someone check the radiator with a "heat gun" to see if there are any cold spots. Home flush kits and sometimes even shop flush equipment will force cleaner around, not through heavily plugged areas and not clear the obstruction. Heat gun is best way of finding cold areas that are not flowing.
also...you mentioned fan relays...does the fan come on?

Oct 01, 2009 | 1999 Pontiac Grand Am GT

3 Answers

99 GrandAm still overheating after replacing comon problem parts.


did you bleed the air from the system? how do u know u don't have a leaking head gasket, have u had it checked with a gas analyzer?

Sep 29, 2009 | 1999 Pontiac Grand Am GT

1 Answer

Random/multiple cylinder misfire detected


when u bent the push rod u might have bent the valve in the head ,by puting the longer push rod where it didnt belong it kept the valve open when the piston came up and the force of the piston on the valve bent the push rod,you will have to remove the head,hope this helps

Sep 20, 2009 | 2000 Pontiac Grand Am GT

2 Answers

Cly head torque settings


The torque is 44 ft lbs+ 95 degrees. You will have to replace all the head bolts/ one time use only. Working from the center out tighten all to 44 ft lbs. Then from center out again go anothre 95 degrees. Good Luck

May 17, 2009 | 1999 Chevrolet Venture

1 Answer

I'm trying to find out what the torque is on the cylinder heads for a 3.4 pontiac grand am 99


1st u must use all new head bolts, that said follow this factory procedure from the manual.
HEAD BOLT TORQUE FOOT POUNDS (FINAL TORQUE) TORQUE SEQUENCE --------- | 6 2 3 7 | | 5 1 4 8 | --------- STEP 1: TORQUE IN SEQUENCE TO 33 FT/LBS STEP 2: TURN AN ADDITIONAL 90 DEGREES RECHECK FINAL TORQUE IN SEQUENCE *** CAUTION *** ENGINE USES TORQUE TO YIELD HEAD BOLTS (TTY) THAT PERMANENTLY STRETCH DURING THE INITIAL INSTALLATION. NEW HEAD BOLTS MUST BE USED WHEN CYLINDER HEAD IS REPLACED OR RE-INSTALLED TO OBTAIN PROPER TORQUE. ALWAYS COAT BOLT THREADS WITH THE PROPER SEALANT

Feb 20, 2009 | 1999 Pontiac Grand Am GT

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