Having problems with your 1988 GMC S-15 ?
Truck misfires at a steady rpm
\015 Truck idels fine. when your at say 3000 rpms in third gear the truck misfires. does it in any gear as long as your at a steady rpm\015
Check your distributor. Sometimes the bearings that hold the shaft in place wear out and causes movement with the rotor so it doesn't turn right. It will cause the rotor to not hit the points just right under the cap.
Sounds like tune-up What has been done?
Repair Help & Product Troubleshooting for 1988 GMC S-15
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