sport trac losing power and smoking out the tail pipe, smell like gas buring on 2002 Ford Explorer Sport Trac

the sport trac just started a large amount smoke from tail pipe and has lost power while driving. it smells like the gas is going through the pipe. as soon as i slowed the engine would cut off. it restarted but i had to keep gas pedle to floor, most i could get for speed was 30 miles hr.
i traveled 10 miles and used ablout 20L of gas. it seems like the gas is just going out the tail pipe.
what would cause this?

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2 answers
It sounds like a bad fuel injector but any any rate the car should not be driven. Gasoline may wash lubrication from the cylinder walls or catch fire in the exhaust/cause catalytic converter failure.
sounds like a misfire...a diagnostic is needed..try my shop