2morrow
DesignR/DriveR/RiceEatR
- Joined
- Nov 15, 2015
- Threads
- 51
- Messages
- 5,992
- Reaction score
- 5,354
- Location
- NorCal Bay Area
- First Name
- Todd
- Vehicle(s)
- '16 Mustang GTPP
Mine does that all the time. I love it :love:
Sponsored
you haven't seen a backfire until you've blown (at minimum) the air cleaner about 10 ft. high.
Backfire something with forced induction and you might just launch the whole darned fuel intake system...
after-fire (those pops in the exhaust when the butterfly is closed) is from unburned fuel passing the exhaust valve... could be from running rich, could be in the EGR, could be fresh from the valve overlap.
You can get extreme after-fire in a carbureted engine with a mechanical fuel pump by cutting ignition while at speed. The transmission continues to drive the engine, fuel pump and all, and fills the exhaust system with near-stochiometric A/F mixture. Spark the ignition again, and it all burns up in a fantastic blue flame that rids your drive of tailgaters.