Here goes....

Last time I filled up my tank with gas a strange thing happened. I filled up before leaving for a 1-hour trip home. Filled up all the way. BUT, the needle on the fuel gauge only rose to halfway between full and 3/4 full. So I figured the pump prematurely cut off. When I get home I fill it up again to be sure. It was as full as it would get before gas started spilling out. Needle still only rose to halfway between full and 3/4 full. After 2 days of driving, the needle rose to the full line. (It usually rises until it's a little bit above the full line). Over the past week, while driving around, the needle has fluctuated between the full mark and the 3/4 full mark. I'm guessing it's something to do with the sensor in the tank that measures how much fuel is remaining. I'm wondering though, is the sensor on the fuel pump? My fuel system is all stock except for a Walbro pump. Could the pump be the cause? Any input would be greatly appreciated.

 

bump

 

dude that crap happens to me too. i full it up all the way, and the needle is below the full mark. what the hell

 

do you have a stock fuel pump? how long has this happened to you?

 

couple months ago. i have a stock fuel pump. it is strange

 

whats really funny is I just asked about this like a week ago....
https://www.evolutionm.net/forums/sh...6&goto=newpost

 

damn, there seems to be a lot of people having this problem, even sti's. Has anybody figured anything out yet. It seems the scubies are resetting the ecu and that worked for a couple people. any word for sure

 

don't know what the cause is but i have noticed this problem on at least one occasion also.

 

you might have bent the arm of the float in the gas tank that read how much gas is in there

 

I agree with Silver Evo!!

 

how the hell would i have done that. i never messed with the gas tank

 

Mine also just did this yesterday. I have stock fuel pump never touched it at all. I will try resetting the Ecu with a battery disconnect tomorrow and see if that works

 

I think in one of the Walbro install guides here on EvoM it mentions being careful not to bump the fuel level float when you reinstall the pump. Not sure what it could be on a stock Evo.

 

I thought about that, but the only thing is I have had the Walbro pump installed for almost 6 months. It has been perfect until last week. It came out of nowhere. I don't know what else it could be.....

 

make mitsu install a new fuel level sending unit