darmaley94
New member
- Joined
- Nov 21, 2011
- Messages
- 37
Hey everyone, I'm new on here and hopefully someone can help me. I have a 91 F-250. Completely stock. As soon as I start it, sometimes it will make this loud thud 3 times and quit(before I bump the throttle to kick on the high idle). After it does that, it will white smoke and the exhaust will pop(sounds like a back fire) until about 45 seconds to a minute before the high idle shuts off. What would make this do that?