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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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.
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.
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)
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?
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
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
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