converted 1994 351 to lpg duel fuel will run at higher rpm not at lower rpm have timeing advance controler moved timeing back and forth did make much differance works fine on gas

 

Welcome to FTE. You posted in the 2009 - Present F150 section but if you go to Bio-diesel, Propane & Alternative Diesel Engine Fuels - Ford Truck Enthusiasts Forums they should be able to help you with your propane conversion.

Also you can try the 1987 - 1996 F150 & Larger F-Series Trucks - Ford Truck Enthusiasts Forums section for more specialized help for your year of truck.

Hope this helps.

 

Moved. Thanks for the headsup.

Welcome markw7917.

 

Sorry Scott...............Wrong forum, He has a GAS/Propane engine not Diesel!

The post should go here: Alternative Fuels, Hybrids & Mileage - Ford Truck Enthusiasts Forums

 

Thanks fabmandelux.

 

Please give me some info on the equipment used and i will try to help. First blush sounds like you have an air leak between the mixer and throttle body.

regards

 

impco mod 300a mixer ,vff 30 reg ,300 a series 17 & 20 carb dual curve 40622 how does the mixer filter air in lpg mode

 

Sorry for the delay, That mixer is ok but the CA300-50 series would flow more air. I assume this is spliced into the air tubes coming from the factory airbox? If so you need to make sure all of the connections on the engine side of the mixer are tight, if you leak air there it would cause the issues you are having. If you could post some pic's of the system it would help. The mixer could also be sticking the "piston" (air valve) in the center needs to move smoothly as airflow into the engine is what makes it work, If it is sticky it could also cause you issue.

let me know

Regards

 

hi thanks for info so far trying to learn to post pics i cut intake tubes off for 300 a at 20 " from intake took model e apart every thing moves free tried different model e same thing doesnt run at lower rpm dont see no air leaks

 

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