dodgerdog

I am experiencing just way to many issues with fuel system since installing a FASS, Vulcan drawstaw and fuel pressure gauge - all whilst trying to improve reliability and performance with replacing the VP44. So after installing the drawstraw, to resolve the running out of fuel at 1/4 tank, the fuel sending unit went bad - hence ran out of fuel at 1/2 tank. nk. This became so ridiculous even hilarious in that I had to have my truck towed for the 3rd time back to the mechanic. They dropped the tank and installed a new sending unit. Then I notice at around 1/4 tank, I'm running out of fuel pressure again - the original problem that the Vulcan drawstaw was suppose to resolve? Apparently, the first time around, the mechanic cut the drawstaw too short, because of the measurement error with fuel in tank causing an erroneous measurement due to dimensional displacment - gravity. So the last time into the shop (3rd time), the mechanics cut another Vulcan drawstraw - saying that they had a way to support the tank to get an accurate measurement. Turns out they cut the original drawstraw about 3/4" too short.

Now I have a fuel leak - the tank wet with fuel right below where all the tank hose fittings are made. So guys, I'm wondering this time around if it would just be easier/better for the mechanics to pull instead of dropping the tank for what now would be the 4th time or remove the bed to solve this problem once and for all? I want to go back to the same mechanic to hold them accountable, and to not have to pay for something that should have been solve with the when they install the Vulcan drawstraw the first time around? DD

infidel

In my experence unless there is a 5th wheel hitch or tank in the back it's always easier to tilt up the bed.

clops79

tilt bed, on truck that I dropped tank to fix brake line the origanal sending unit with metal tubes for fuel lines was corroded and got a pinhole in it. so unless absolutly nec. tilt bed and dont drop tank. to tilt bed take 3 or 4 screws out of were fuel fill up is and remove front 6 bolts on bed and loosen back 2 bolts about an inch and jack up bed.

TIMMY22

I'd take the bed right off.

Fix it, then take it up the road to see if it's going to leak before you reinstall.

Fishin2Deep4U

We always drop the tank as it is the easiest and fastest way to get the job done.

Cutting the DrawStraw is the sinbgle biggest cause of issues with that product. I can't see what year truck you have or if you have an intank module, but there are some options to the DSII.

The fuel leaks can be caused by lines with too much side pressure on the fittings as well. Make sure the lines are not stretched tight.

Drop me a PM or give me a call and I would happy to help try to diagnose problems and try to make some suggestions.

Dave

bob95065

I siphoned the fuel out and dropped the tank. It was easy.

Use a pump type siphon or you may get a mouth full of diesel. Although I found that diesel has a more mellow taste than gasoline it has an unpleasant aftertaste that can last for hours.

wyododge

I just got done fixing my draw straw. I decided to just pull the bed off. A little bit more work but makes it easier to measure clearances and spacing. I just bought a couple of bulk head fittings at my local Ace, put brass 90* on top and then the thread to barb for my fuel line. On the bottom of the bulkhead fitting there is 1/2 pipe threads. Put a slip to thread pvc fitting in and schedule 40 12" pipe as my draw straw. Measured it myself, cut the draw straw 1/4"off bottom, sanded the ends real smooth. All in all it cost me $35.00. and a couple of nights of work. You could probably do it with just tilting the bed if you wanted to though. I was just worried about securing it so I would not end up in a truck sandwich!! There are pictures of the final result here post number 8. Hope this helps!!!