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Raw fuel coming out of tailpipes

 
Old 04-30-2019, 05:32 PM
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Default Raw fuel coming out of tailpipes

I HAVE A LS SWAP IN A MUSTANG THAT RAN FINE FOR A FEW YEARS AND OUT OF NOWHERE IT STARTED POURING RAW FUEL OUT OF MY EXHAUST.....Ive changed every sensor....regulator.....fuel pressure gauge
Changed plugs.....checked injectors......dont know where else to check...even changed the pcm....could it be in the harness somewhere..maybe bad ground?? Any help will be appreciated..
THANKS IN ADVANCE
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Old 04-30-2019, 05:36 PM
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I would guess a injector stuck open. How did you check them?
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Old 04-30-2019, 06:01 PM
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Originally Posted by 98CayenneT/A View Post
I would guess a injector stuck open. How did you check them?
With a noid...injector tester
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Old 04-30-2019, 06:12 PM
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Originally Posted by nos302 View Post
With a noid...injector tester
I would pull all injectors and put about 30 psi compressed air to them. Sometimes you can even just blow through them when they are stuck open. They should have zero air coming out the other side.
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Old 04-30-2019, 06:18 PM
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Ok thanks...ill try that
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Old 04-30-2019, 06:59 PM
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Originally Posted by nos302 View Post
With a noid...injector tester
That checks the electrical pulse activity, not the condition of the injs. Time for a flow bench test.
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Old 04-30-2019, 08:49 PM
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Originally Posted by Old Geezer View Post
That checks the electrical pulse activity, not the condition of the injs. Time for a flow bench test.
I had them flowed as well......
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Old 04-30-2019, 08:52 PM
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Tonight i took all the plugs out again and spun the motor over......gas coming out of only one of the plugs.....seems like one of the injectors took a crap right after i had em checked .....go figure......ordered new ones....hopefully this was just some freak azz coincidence

Thanks for all the responses.....let u all know how i made out once i install them
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Old 05-02-2019, 06:28 AM
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^^^ Change the oil, before you start it, w/ the new injs.
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Old 05-02-2019, 01:29 PM
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Originally Posted by Old Geezer View Post
^^^ Change the oil, before you start it, w/ the new injs.
Most definitely....thanks
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