I have an intermittent miss, any suggestions ?

1997 GMC SIERRA
Avatar
DALE MOORE
  • MEMBER
  • 1 POST
recently had intake gasket replaced, spark plugs have been changed. now have intermittent engine miss and airbag light is on, also mileage is down about 40 percent. any suggestions ?
Sep 4, 2011 at 6:23 AM
Advertisement
Avatar
JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,248 POSTS
Check ignition wires for arcing. Check for vacuum leaks. Also, an easy way to check the wires is this. At night when it's dark, open the hood, start the engine, and mist the plug wires, dist cap... to see if anything is arcing. At night, you can see arcing easier. If you replaced plugs and the wires have been moved around, chances are now there is a arc causing the miss.
Sep 4, 2011 at 7:19 PM
🔧 Tools & Auto Repair Parts
Find automotive tools, diagnostic equipment, and replacement parts for your next repair.
Shop on Amazon →
Paid affiliate link. As an Amazon Associate, we earn from qualifying purchases.
Add a reply
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.

Ask a new question

Frequently Asked Problems for This Vehicle