stalls

[drivit]

i just bought a truck with a 350 throttle body, starts-idles a bit-then stalls.
touching the throttle also makes it stall, it ran ok before
all i did was lift it up high at the back to cut something off
i did pull the wire for the fuel sender
also the guy put an inline fuel pump, up at the throttle body
connected straight to the battery
switch on pump start truck
the pump never made any noise
now you can hear it working but engine won't take fuel

[VileZambonie]

replace the fuel pump in the tank and get rid of that rigged up pump that's gonna catch on fire and burn your truck down.

[drivit]

just to move the truck around on the property
the inline pump draws from a gas can
it starts but will not accept any throttle

[VileZambonie]

You NEED the correct fuel pressure to run.

[drivit]

yes, i wish i knew why it ran ok before
i need to move it down the the back

[truckdoctor]

Drivit, I know when you move a fuel pump from a tank to an area closer to the engine the fuel pump looses head pressure (meaning it won't supply the needed fuel pressure or enough fuel to make it run past idle, plus the psi isn't enough)

You have two problems right now. The first is you spent money on a fuel pump that in your case isn't going to work for your needs, you need to remove it and keep it for another project of some kind. (but not on this truck)

The second problem is, no matter how much of a pain it is to get to and remove you're going to have to buy the correct fuel pump for your truck and install it where it belongs, in the fuel tank.

I'm guessing unless you paid around $100.00 for a fuel pump it isn't going to supply the engine with enough fuel to run past idle. Cheaper pumps are used for carburetors and only usually carry between 4 and 8 psi, where an engine having some type of injection (I think you said you have a throttle body?) fuel injection requires a bit more than 4 to 8 psi. I looked in my book to see what pressure it should be, from what I'm reading it should be 9 to 13 psi when running. 

Unless there is another problem we are unaware of, I would say if you were to put everything where it belongs and replace the fuel pump with the same OEM type, your truck should run fine. But I think until you do this you may be driving yourself crazy looking to see why the engine doesn't run past idle.

Good Luck

[drivit]

thanks doc, here's a not funny story-i bench tested the stock fuel pump-found out after that its a BIG NO NO
so i didn't blow my face off-very lucky-its pumping don't know what pressure though. i was going to stick it in a 5 gallon plactic bucket with a sealable lid. you were saying not to shorten the distance to the injector what if i coil up the hose? i want to put the bucket inside on the passenger side floor because i'm torching the frame out back. tank is scrapped. just need to move it in & out of the shop.

[Captkaos]

Are you just trying to move the truck?

[DnStClr]

I don't understand your reason for pulling the wire from the fuel pump if the truck was running fine before you lifted it to do some other work. Or did I misread?

[drivit]

yup your right, thats what caused it to stop i was torching off the rear cargo box
grabbed the wire loom and pulled it aside, stupid auxiliary pump just confused the issue
if i put the pump in a pail of gas thats properly sealed and vented am i gonna have a problem?

[197]

You shouldn't but I wouldn't leave your yard/shop like that.

[DnStClr]

Drivit, I don't think anybody's going to tell you it's a safe practice to run your truck using a cobbled up fuel delivery system. For your own safety please re-read the advice given by VileZamboni and put the right fuel sender in your tank. You know, if you're going to keep the truck, you'll want to have the right fuel set-up anyway.

[drivit]

thanks i agree with everyone.
this is a cab & chassis that i want to shorten to accept an 8 foot box
i removed the tank, rear brake lines, parking brake cable, drive shaft and wiring
it will get towed to the welders
the front drive and brakes still work so they can start and move it around if needed
how to get the correct measurement to cut the frame would be a very big help