Rb26 Misfiring On Cornering

[PSIKO]

Hi guys,

I recently went to the track, and although the first few outings were fine, after a while it began misfiring whenever I'd be cornering. It seemed fine whenever I would hit the straights.

It had roughly half a tank of fuel, is an R34 (which I think has a bit of baffling in the tank anyway), but other than that I'm a bit ... baffled ...

No smoke was seen coming out either.

Any help would be greatly appreciated,

Cheers!

[Piggaz]

Does it still do it with a full tank?

[MrStabby]

^ what he said. Certainly sounds like fuel surge. Might be worth checking the fuel pump cradle is correctly locked into its bracket and that the sock is present.

[PSIKO]

Thanks for the replies guys!

Does it still do it with a full tank?

Yep it was fine when I entered with the full tank - is half a tank typically low enough to get fuel surge on an R34?

^ what he said. Certainly sounds like fuel surge. Might be worth checking the fuel pump cradle is correctly locked into its bracket and that the sock is present.

I haven't double-checked this one, cheers, will pull it out and see

Even if all still in place/locked in properly, it's probably a good idea to get a surge tank in any case!

Thanks again guys

[Plattsy]

fuel pump doode

[Piggaz]

In going with incorrectly installed fuel pump.

[Anfanee]

yeah fuel pump.

[Dose Pipe Sutututu]

maybe it's fallen off the holder/slot thing...

[VFRegal]

has anyone mentioned fuel pump?

Definetly fuel pump.

[XKLABA]

What pump, Walbro 400 ?

[PSIKO]

Bahaha, ok thanks gents, looks like we have a consensus! Thanks muchly

[PSIKO]

What pump, Walbro 400 ?

Hey mate, Walbro 460 I believe it is

[XKLABA]

The early 400s ( not sure exactly which ones ) have a problem if they become air bound, they need to be lowered as much as possible (like bottom of tank ) or plug the surge/bleed hole or replaced with a newer model

[PSIKO]

Ah righto, cheers for the info, hopefully doesn't need to be replaced!

Will take a look at it and make sure it's secured firmly as suggested and perhaps see if any room to drop it a bit more; will also perhaps just take a jerry can to the next track day and keep the fuel topped up, before going down the route of surge tanks etc

[XKLABA]

Yeah keep the tank full and no issue = all good