Leaning out

[toppertopper]

Finally finished pump rewire . Now i am leaning out when i go onto throttle not wot..Can i adjust that using the maf-t ? ...I should be running pig rich , with the walbro 255 and rewired ..Shouldn't i WTF ...All help would be appreciated ..Never played with maft setting and i don't know what it can adjust just yet ....

 

[Chevy2g3]

Are you sure your fuel pump isn't going out? This literally happened to me a few days ago and it turned out to be a bad pump.

 

[toppertopper]

Its Not the pump , Just had it out ..Had it checked ..Tank is nice and clean , so its not clogging...I will change the fuel filter tomorrow , maybe that's the problem..Will also check the volts going to the relay tomorrow

 

[Chevy2g3]

Is everything grounded properly? If this just started to happen after the rewire I would double check all your wiring.

 

[toppertopper]

Started after the rewire , when i go into wot ..it evens out ..Just don't like the whole lean when pressing the throttle , and lack of power

 

[Chevy2g3]

I hear ya man. Going lean is a scary thing. I hope you figure it out bro. Sorry I couldn't help much.

 

[toppertopper]

Can anyone help , still leaning out when going on the throttle ..Little choppy untill i go wot ..normal-lean at idel ..Normal when warm ..Lean while on throttle ..Normal while Wot
Rewire =good ground ,good power etc

 

[WES_393]

What fuel pressure regulator are you using? Rewiring the fuel pump shouldn't affect A/F ratio at all (rich or lean) so long as the pump is functioning and properly regulated. Also, what gauge wire did you use for the rewire?

 

[mcre8iv]

Definitely check grounds and FP.

 

[compression]

your absolutely sure it wasnt doing that before?, you could go on your maft and turn your middle knob a few clicks richer to see what happens.

I dont see an Afpr on your mod list, a 255 has been commonly known to overrun a stock regulator, i see you have a a/f ratio gauge, i assume its a narrowband advanced auto parts type? well if so, you should never use that as a reference tool to your actual a/f ratio.

 

[toppertopper]

I forgot i had this thread up ...I think its the ground from the pump (the one that is still in the plug ) ..Can i just cut it before the plug and ground it??
The maft could be set to run to lean also ..(all settings are set to f ) what knob to i adjust and in what mode?
Still has the stock fpr