Pickup surging
 

Well, my 03 is surging when i give it anything more than 1/4 throttle. It started doing this after I replaced my injectors and put an airdog 150 on it. I put the drawstraw at the back of the tank(maybe a little 2 far back not really sure?) If the tank is full it doesn't do it to bad but the lower it gets the worse. 1/2 tank it does it and at 1/4 tank you can barely touch the throttle without it acting up. It seems as if It's running out of fuel which I know shouldn't be the case. Any help would be greatly appreciated.

Interesting. Am curious what the problem is.

check the draw straw to make sure you don`t have a bad one
also check the cut you put in it, then check all fittings to ensure they are not leaking
you could alsocheck out a sump for your tank:w2:

I'll pull my tank tomorrow and check it I think I'm going to move it to the middle anyways. Also i'm only getting 14 mpg's now where before I was getting 20, and that was with injectors so bad it wouldn't start at all without ether.

Ok I pulled the tank out and checked the draw straw, It looked ok. I had some of the 1/2 in. hose left over from splicing the fuel lines and I slid It over the draw straw to eliminate any pinhole leaks that could be there. it's a little better now but still does it at 1/8 tank now. does anybody else have any ideas because i'm getting tired of working on it starting to make me think i have my ol' 6.5 chevy back again lol. i was told maybe it was an injection pump which if it is does anybody know where a 12v is and the best way to go about putting that in there lol.

Fuel pressure gauge is your friend and how far off the bottom of the tank is it?

It's almost touching the bottom. maybe 1/4 inch off. It runs great at 3/4 tank or more though that's what i don't understand some people say ip but that wouldn't matter with constant flowfrom the tank.

a leak in the draw straw or building vacumn in tank