F-600

[jayjayjayjay]

I have an f-600 that is used for a grain truck. It hauls loads around great, but not like it used too, it seems to be lacking power. It also has a major problem with backfiring. I even had a fire occur because of this. If anyone has had similar problems or suggestions plz reply

[ModMech]

If it's Holley equipped I'd guess the "power valve" is now leaking, and that wure will cause a fire.