- Joined
- Jan 9, 2015
- Messages
- 743
- Reaction score
- 360
- Location
- Texas
- My Car
- '72 "mach" and a bunch of other stuff.
If you don’t trust your timing mark get a vacuum gauge and set it to max vacuum.Well, I got it to fire by guestimating 10ish BTDC. After about 10 seconds of running my carb blew off (was not bolted down) bad backfire through carb. Any ideas? Still timing issues? Fuel mixture or something with carb? What do you guys set yours at for initial start? Keep in mind this is a 460 bb. TIA!
If you have trouble starting back off some.
Compare that to your marks.
Also if you didn’t bolt down the carb it could have been a lean backfire from a vacuum leak.