fuel delivery during hard left turns.....

[tannji]

anyone else have a problem with the engine leaning out while making a left turn? mine does it while slightly more than half full.... let alone nearly empty. I dont remember ever having this problem back when I used to run Z's.... unless the tank was nearing empty. could this be a fuel pump problem? I got under there and the pump is in the stock holder, but with foam sheeting wrapped around it to compensate for the holder being too big! why would someone go with a small aftermarket pump for a V8 conversion? it also has unsatisfactory wiring, so I am planning on a complete replacement, including new ground wire ran all the way to the battery ground. any recommendations on what pump I should go with? I want either 70+ PSI, or an adjustable unit. (for a TPI motor)

 

Also, filling the tank 100% is difficult.... it backs up in the filler tube at about 7 or 8 gallons, and from there to full is a slow process, waiting for the tube to drain down. Never saw that before either... any ideas?

thanks,

 

tannji

[SleeperZ]

My 280 will lean out in hard left turns at 1/4 tank. Just fuel moving away from the pickup I suppose. A pump problem will be insensitive to acceleration, and the stock (turbo) pump is good for 250 hp or so.

 

It sounds like you have a vent blocked in the tank - that's why it backs up on you.

[tannji]

Hmmmm.....

 

Sounds like I need to drop the tank. I am getting the lean out at ridiculously full levels, and the fuel gauge stops at about 3/8ths of a tank.... so between pulling the filler tube, pump wiring, and leaning out prob..... = ( I hate dropping fuel tanks.... lol, Oh well.

 

tannji