running bad??????

scooby

Registered User
i have 89 sc and every time i try to fix somthing it does the same thing i will start it its takes a couple cranks when it fires up it runs good for a half of min or so and then when you hit the gas it will stall and when it does stall it backfires out the exhuast bad loud and smelly can anyone help me i am about to fix it with a 12ga.
 
I suggest checking for any codes.

Reads like fouled plugs. Have you changed the spark plugs yet? could be plug wires...
 
Definitely pull codes. Could be anything including plugs. Never hurts to swap them out. Be sure to read up first before you take on the job; its a PITA and will take you all day if you don't know how to go about it. If you know how to do it, takes an hour or 2 w/o cutting corners.
 
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