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Dual Fuel on a '88 F250

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Old 09-04-2012, 11:50 PM
GregonVI GregonVI is offline
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Dual Fuel on a '88 F250

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I just purchased an '88 F250 4X4 351 5spd that has a full propane conversion, for greater flexibility I would like to convert it to dual fuel. The installer used an Autotronic 5910 Dualcurve and I am looking for info from anyone that has expirience with these units.
From what I can see on page 7 of the installation manual:


all I need to do is wire in a switch and I should be already to go, can anyone confirm or add to this.
I was also thinking that as these unts are no longer available new maybe I should try and find one or two extras in case my dies.

Thanks, Greg
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Old 09-06-2012, 01:38 PM
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gasman6674 gasman6674 is offline
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If the gasoline injectors, fuel pump and tanks are working go for it, you a 3-way switch that will allow you to switch back and forth. What mixer/system does it have on it?
If it is an Impco CA425 you will need to rig up a solinoid to apply vacumn to the top of the air valve when you are on gasoline or it will run really rich due to restricted airflow.

Last edited by gasman6674; 09-06-2012 at 01:38 PM. Reason: spelling
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Old 09-09-2012, 11:40 PM
GregonVI GregonVI is offline
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Yes it has a Impco CA425M-2 mixer so that means that I should be good to go . Thanks for your help and I may ask more questions when the install time comes.

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