96 7.3 Exhaust backfire with FLAMES - Ford Powerstroke Diesel Forum
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Old 11-21-2012, 08:17 PM
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96 7.3 Exhaust backfire with FLAMES

Alright I was driving down the road at 75 mph to 80 mph in my stock 96 7.3 powerstroke with DIY Intake and stack, I let off the pedal and slowed down about 5 mph to around 70 mph when I went to accelerate a couple seconds later my truck backfired out my stack and blew about a 5 foot flame (it was at night and lite everything around me up) and popped like a shotgun going off, it scared the piss out of me and everyone driving around me.. I need to know what caused this and how to stop it, if anyone can help please help!!
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Old 11-22-2012, 08:20 AM
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why would you wont to stop that, too cool!

sorry had to lighten the mood, mines not even running
happy thanksgiving!
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Old 11-22-2012, 09:28 AM
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hhaa well it is awesome but its probably pretty bad on my truck so I wanna find out what it is
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Old 01-24-2013, 03:41 PM
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Did you ever find out any information on what happened? My 2000 7.3 did this last night (minus the flames) in approximately -5 degrees...seriously felt like someone popped a .50 cal round at the truck, but no codes, and everything has checked out..stumped...
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Old 01-24-2013, 10:28 PM
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My guess is raw fuel accumulated in the exhaust. (Injector stuck open perhaps.) Fuel gets ignited by hot turbo.....BOOM. A great way to blow the exhaust to pieces. Quite possible an injector stuck open just for a couple seconds.....might never do it again.
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