hey,i just put a new 3 layer metal head gasket in my 91 LS and she is still blowing white smoke. I torqued everything down to factory specs and it is on time,but it's still blowing smoke,any idea why it would do this?and also,before i did the head gasket every time i got on it more than just normal driving i could smell rich fuel,my fuel pressure is still at 34 pounds.if anyone has any suggestions or tips/info p[lease let me know.thanks.

 

did you inspect the heads for cracks.
did you take the head to the shop?

 

did u by any chance try ignition fluid?? if not that then im not sure man gl

 

you didnt get it milled. did you?

 

piston rings would be my first thing to check
do a compression test
or a leak down test

 

iam with rally rat,,,should have gotten the head check for straightness with a straight edge,,,,just take it too your local machine shop and have them check it and its free no charge to see if it has been warped.

 

yeah i checked for cracks in the head before i put it back on.the car just barely is about to roll 130k miles and has only overheated once before,cuz of low coolant fluid but i got it before it had reached max temp,was just over the mid level on the guage before i got to a spot where i could stop and put water in it.

 

what should my comp. be at in a 91 LS motor,not sure if it would effect it but only things done to it is 2 1/2 inch header back exhaust,adjustable cam gears 3 degrees retarded and a 3 layer metal head gasket.

 

its probably warped and it will only get worse the more you run it

youll need to do the headgasket all over again (with a new gasket), only this time you will need to take the head to a machine shop.

ive been in your shoes before. sucks when you cut corners and it comes back to bite you in the ***

 

why would you check these if you have WHITE smoke??

white smoke = coolant

blue smoke = oil

 

yeah..mine blow some black water dust outta exhaust pipe.

 

Sound like the head is warped. You will have to have it machined smooth again. Also wanna check the block. It can warp too

 

get head machined or rebuilt....

 

he's right.
coolant is getting inside the combustion chamber.

 

yeah i started checking comp on it and comp in first cyl. was showing just under 100,so i just stoped right there guessing that my head is warped.thanks all,anyone know of a good machine shop in new hampshire,prefferably around the lakes region area,thats decently priced?