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96 1500 Not Running Right

nsgmc

By nsgmc
in Ask A GM Technician

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nsgmc Enthusiast

nsgmc

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So I recently had the intake gaskets replaced in my truck, now it doesn't want to run right. They have changed the coil, distributor cap, plugs and wires and it still wont work right. If you are accelerating it is fine, but if you let up on the pedal to cut back it makes a nice little popping sound and will stall once in a while. Also it seems quite finicky at 20 to 30 mph. I am frustrated with this, any ideas? Also there are not check engine or service lights lit up.

Nytemare Senior Enthusiast

Nytemare

Posted
Posted
So I recently had the intake gaskets replaced in my truck, now it doesn't want to run right. They have changed the coil, distributor cap, plugs and wires and it still wont work right. If you are accelerating it is fine, but if you let up on the pedal to cut back it makes a nice little popping sound and will stall once in a while. Also it seems quite finicky at 20 to 30 mph. I am frustrated with this, any ideas? Also there are not check engine or service lights lit up.

Have you re-torqued the intake manifold after 100miles of driving??

nsgmc Enthusiast

nsgmc

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  • Author
Posted
So I recently had the intake gaskets replaced in my truck, now it doesn't want to run right. They have changed the coil, distributor cap, plugs and wires and it still wont work right. If you are accelerating it is fine, but if you let up on the pedal to cut back it makes a nice little popping sound and will stall once in a while. Also it seems quite finicky at 20 to 30 mph. I am frustrated with this, any ideas? Also there are not check engine or service lights lit up.

Have you re-torqued the intake manifold after 100miles of driving??

 

 

 

Haven't gotten that far yet, worried something is wrong, noticed this afternoon it does it at near any speed, if I am on the gas it is good, off the gas competely it is fine but if I am going 60 mph and let up but still have my foot on the pedal a bit it jerks and sputters till I either hit the gas or let off. Can you tell me the torque specs?

Nytemare Senior Enthusiast

Nytemare

Posted
Posted
So I recently had the intake gaskets replaced in my truck, now it doesn't want to run right. They have changed the coil, distributor cap, plugs and wires and it still wont work right. If you are accelerating it is fine, but if you let up on the pedal to cut back it makes a nice little popping sound and will stall once in a while. Also it seems quite finicky at 20 to 30 mph. I am frustrated with this, any ideas? Also there are not check engine or service lights lit up.

Have you re-torqued the intake manifold after 100miles of driving??

 

 

 

Haven't gotten that far yet, worried something is wrong, noticed this afternoon it does it at near any speed, if I am on the gas it is good, off the gas competely it is fine but if I am going 60 mph and let up but still have my foot on the pedal a bit it jerks and sputters till I either hit the gas or let off. Can you tell me the torque specs?

 

I have no idea what they are...but I would venture a guess of 11-14ft-lbs.

MaForrest Enthusiast

MaForrest

Posted
Posted

My '64 chevy with a 350 did the exact same thing and all it turned out to be was that while putting my intake back on, the gasket slipped just a smidget and allowed a pin hole leak. After scratching my head a few days I took it off and re-mounted it and it was fine up untill it blew. If it was fine before and now after gasket change its not.........just a thought.

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