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   Please help.  At my wits end.   I have a 2001 Dodge the problem is,  after driving two hours on the highway if I come to a stop after driving this length of time and then accelerate again the truck will die I don’t lose my prime at the injector pump ,  I do lose pressure. but my pressure takes some time to rebuild and then it will start. I’ve pulled my tank draw straw no obstruction.  I have a raptor 100 lift pump. After I restart the truck it runs fine.  Starts fine when hot. Seems like it’s starved for fuel.  If I bump the starter after it dies the pump will rebuild pressure and the truck will start. Any ideas ? 

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8 hours ago, Rustic AK said:

Ok. I have the raptor draw straw in the bottom of the gutted factory  fuel bowl module. And the return fuel goes into that bowl. Maybe should go with a set up like yours. Straight draw straw and the return fuel just dump in from the the top of the tank. 

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Both my second gens have the return fuel plumbed into the filler neck. I like being able to see the amount of return flow when the cap is removed and it also helps mix the 2 stroke when pouring in.

  • Owner

So fuel systems don't return at all. Like Dodge DDRP pumps. These pumps are known for cavitation problems.

 

Pumps that return like AirDog, FASS with twin filters typically will return to the filler neck for air removal and return from the regulator of the pump. These typically return to the filler neck like @JAG1said. 

Still the engine fuel return is still in the stock sender of the tank. I don't want to draw up fuel that is heated to near coolant level being it drains out of the back of the head from the injectors. The the heated fuel from the injection pump. All dump back in a sump of the sender heated to near coolant temps. So my old drawstraw that everyone hates is the best option for cooled fuel and reducing the VP44 fuel temps. Even in the winter time with my stock filter I can still keep the fuel warm enough to prevent gelling at -40*F which I did several times no problem. 

I have never had a lick a trouble out of mine either. No temp sensor in mine but I always wondered how warm the return fuel from the pump is. The return fuel from the engine has been falling back to the basket since it was new Not knocking anyone set up because they all seem to work fine. 

  • Owner

Like I was figuring out guys in the south with high fuel temp passing 150°F to 160°F where I don't see that problem the only thing I can wrap it up with is the fact the source of new fuel in the sender is captive where the hot fuel is stored. Then suck up the heat fuel again and again heating up. Pumps will only recirculate the hot fuel back in forth in that small cup of the fuel tank sender and wonder why the fuel temp is high. Since I installed my AirDog 150 back in 2006... I've not seen any Asphaltene in my filters since then. Fuel temps remain much lower than most that use the fuel sender cup for capture point. 

I guess to compare apples to apples we would have compare the fuel baskets. Mine is not oe but the in tank pump basket. Mine is about 2.5" deep and maybe 3.5" in diameter. The pics I have seen of the oe basket shows it to be many more inches deep but similar diameter. I am figuring that there is a fair amount of fuel mixing going on from the tank and the pickup is getting alot more than just returned fuel until the tank gets low.