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Old 06-01-2022, 04:15 PM   #1
041
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Default el falcon runs on gas.willnot ru on petrol,fuel pump runs @ full tank have changed computer.still wont go

el runs on gas wont run on fuel. fuel pump runs & full tank
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Old 06-01-2022, 04:20 PM   #2
Dr Terry
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Default Re: el falcon runs on gas.willnot ru on petrol,fuel pump runs @ full tank have changed computer.still won

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Originally Posted by 041 View Post
el runs on gas wont run on fuel. fuel pump runs & full tank
Have a look at the LPG/petrol changeover relay or its associated wiring.

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Old 06-01-2022, 04:58 PM   #3
wodahs
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Default Re: el falcon runs on gas.willnot ru on petrol,fuel pump runs @ full tank have changed computer.still won

are the injectors getting a pulse ?
can pick up a pulse lame real cheap and unplug an injector and plug in the diode lamp to see if injectors are getting pulse
think i paid under $20 for mine
and turned out to be the problem , then had to work out where and why they wernt getting the pulse from the ecu , think it was a bad connection some where but cant remember as was quit a few years back
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Old 06-01-2022, 06:03 PM   #4
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Default Re: el falcon runs on gas.willnot ru on petrol,fuel pump runs @ full tank have changed computer.still won

could also be a fuel blockage and/or bypass valve stuck open so rail isnt getting pressure to the injectors
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yes still (as money n time permit) doing the

rebuilding the zh fairlane with a clevo 400m 4v heads injected whipple blown with aode 4 speed trans to a 9" ....... we'll get there eventually

just remember don't be afraid to try something new.
Remember, amateurs built the Ark...Professionals built the Titanic!

I have taken up meditation... at least it's better than sitting around doing nothing !!
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Old 07-01-2022, 07:59 PM   #5
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Default Re: el falcon runs on gas.willnot ru on petrol,fuel pump runs @ full tank have changed computer.still won

Just check you have 12v at the injectors when running on petrol. Used to cut the power on gas. . Most likely wire has been knocked of the relay check the loom, most likely spliced near the idle speed control solenoid ( as this needs 12v on both fuel and gas)
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