Monday, October 31, 2005 - 06:28 am, by: Hanré Van Rensburg(Silent_knight)
Hey guys,
I'm just wondering whether anyone else is experiencing the same issues as me with fuel surging.
Whenever my tank is around 1/4 it starts surging really badly when I put foot down. Even sometimes when I don't put it all the way down just pressing on it a bit harder to get through an intersection quickly etc it starts basically bunny hopping.
Will just a higher pressure fuel fix this problem or would it be best to with a surge tank and external pump?
Monday, October 31, 2005 - 09:30 am, by: James Johnson(Jamesy)
used to have the same problem with about a 1/4 tank of fuel and only going around right corners on phillip island. that was fuel surge thoe nothing you can do about that.
but the car started to do it in a strait line after a while. dont know why but after changing the cam angle sencers it doesnt do it anymore. we also though it might of been a bad batch of fuel!
Monday, October 31, 2005 - 12:05 pm, by: Damien Smith(Damien)
I get the same thing Hanre but I know Juzza doesn't get fuel surge on the track. Doesn't seem to be any consistency as to it being TT or V8 related but I'm getting Niall to spend some time on my car to sort it out so if he finds what the problem is I'll let you know.
Monday, October 31, 2005 - 12:41 pm, by: Hanré Van Rensburg(Silent_knight)
Cheers Damien...would appreciate it if you could let me know if you find the cause of it.
Mark I'll be changing my fuel filter soon enough but I doubt it's that, that would be causing a problem otherwise the problem would be more consistent wouldn't it?
Monday, October 31, 2005 - 12:43 pm, by: Damien Smith(Damien)
If it's the fuel filter I'd have thought it'd happen with any amount of fuel in the tank? With mine it only started happening at Wakefield after the tank got below half - before that it didn't miss a beat.
Monday, October 31, 2005 - 01:17 pm, by: Emanuel Spinola(Manny)
Weird one - with the V8s, you'd expect the UZZ32s to have this issue with the G-forces they go through at Wakefield but no one reported this. With the TTs, I've run down to almost empty and despite a few extra kws at the rears, track biased suspension and braking plus sticky semi-slicks leading to serious G forces, I've never encountered any sort of fuel surge with stock pump and later with the Supra pump. Having looked inside UZZ31 and JZZ30 fuel tanks, I can confirm both are identical and well baffled against fuel starvation/surging.
Maybe your pumps are borderline and start struggling once they overheat from no longer being exposed to the fuel cooling they expect to be when immersed in fuel??
Monday, October 31, 2005 - 01:21 pm, by: Hakan Ozgur(One_jz)
I have the same prob. I use BP Ultimate and it still happens. At about 22L or less it does it when 80-100% throttle. This happens everytime when on 1/4 tank. Ive done the Jumping of the Fuel pump ECU, and it didn't happen as often. I think i only experienced twice at 100% throttle and less than 20L fuel.
I'm sure the Fuel filter was changed about 10000kms ago.
Monday, October 31, 2005 - 01:51 pm, by: Damien Smith(Damien)
Manny, did it look like the baffling could come away inside the tank or did it look well secured? Interesting theory about the pump getting hot but when I was getting the surge I was on a constant 3/4 throttle through the Cauldron but when flat out down the straight it was fine... it's got me buggered!
Monday, October 31, 2005 - 04:50 pm, by: Emanuel Spinola(Manny)
Damien I didn't pay attention at how it was secured/braced to be able to say either way. With the back seats out, it doesn't take much effort or time to get the fuel pump out and inspect the cradle inside.
Tuesday, November 01, 2005 - 09:17 am, by: Damien Smith(Damien)
I was thinking of getting a surge tank fitted but Niall thinks he can sort it out without one... may still end up getting a surge tank just to be safe though.
Previous
