mikepier
Well-Known Member
- Joined
- December 24, 2008
- Messages
- 325
- Reaction score
- 6
- City, State
- Long Island, NY
- Year, Model & Trim Level
- 99 XLT
15 XL
A couple of months ago I replaced the spark plugs on my 99 XLT SOHC. Rather than go with the Motorcraft, I went with the Autolite plugs. I can't recall which ones I used, the platinum AP103, or the double platinum APP103, but in any event, I also replaced the wires with a generic brand called Standard.
The truck starts and runs fine except for one thing I noticed. While at a light I notice a slight roughness or vibration in the truck. If I put the truck in neutral its fine. I figured it something to do with the plugs , but I gapped them correctly. Anyone have issues with the Autolites? Could using the wrong plug affect the idle?
The truck starts and runs fine except for one thing I noticed. While at a light I notice a slight roughness or vibration in the truck. If I put the truck in neutral its fine. I figured it something to do with the plugs , but I gapped them correctly. Anyone have issues with the Autolites? Could using the wrong plug affect the idle?