Check for anything not put back like it was before the job. then check for vacuum leak and fix.
SOURCE: replaced intake gaskets.ran fine before. burns antifreeze now
Sounds like the gasket is not sealing correctly, or you have a cracked head. Did you use a factory gasket from the dealer? If not, this is most likely the reason. Haven't had much luck with the aftermarket stuff working correctly on those.
SOURCE: I have a 1997 chevy lumina that just fouled the #4
sounds more like a carbon issue on the piston rings. i would run an oil cleaner such as BG #109, i have seen excellent results with this. worth a try for the price ( about $20 for a can).
Testimonial: "ty I will try"
SOURCE: my 1996 chevy suburban runs rough with no engine
If it ran fine before the intake gasket was installed,then something would be wrong in that area,Do a major tune up on the engine,also check to make sure the plug wires where not put back on incorrect,and check the fire,like see if all the plug wires are firing.
SOURCE: 1998 5.7 chevy. replaced intake gasket, runs rough
You could have any number of problems. Sound like a lean mixture problem. Make sure all vacuum lines are connected. Make sure the upper intake is sealed properly (correct torque and tighting sequence. Spray a mist of water around the gasget area and listen for a hissing sound. If you have a scanner, test each cylinder to isolate the missfire. You may have disturbed one of the injectors and they are not firing. Some debris may have fallen into the cylinder intake port and is keeping a valve open. Plug wires may have been switched. Best thing is take it to your local mechanic.
DT
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