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im still stalling

901 Views 8 Replies 6 Participants Last post by  moparbill
Alright so ive got a 95 CTD in a 94 F350. I started running biodiesel in my truck about a month ago when I finished my conversion. Right after I filled it up the very first time (i mean with in a mile) the truck started sputtering and stalled. It feels like I am running out of gas, I have been filling it up with regular #2 and it seems to be better but the motor will still bog down and it feels like im not getting any fuel. It only stall every now and again but i just cant figure it out. Ive changed all the filters several times and I dont know whats next.....thanks fellas
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Bio is a fairly strong solvent. It will loosen all the dino gunk in the tank and promptly plug up your fuel filter. Course you already know that, I wonder if the pickup screen in the tank is plugged with dino gunk? SLICK CONVERSION congratulations. If the in tank screen was gunked up, you could probably find out by teeing into the suction side of the lift pump and checking for vacuum. Should have virtually none.

You did change the fuel filter at least once AFTER the bio right?
 

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EEK! Definitely look for seals and stuff in the fuel system! A whole lot of gasoline stuff will puff up with biodiesel. I even had an auto shut off nozzle get ruined by it (filling station style nozzle). Some of the plastics/rubbers may not be up to the task. Diesel fuel plumbing is usually bio safe in relatively new vehicles, but with a gasser conversion, it very likely will NOT have bio safe materials engineering.

That conversion sound even SLICKER since you sent a gas engine to the scrapheap! :)

PS another thing to consider is that perhaps a fuel line puffed up and the lining is seperated and plugging things up. Personally I would replace all the fuel lines anyhow if you haven't already. Especially since it was a gas truck.
 
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