Banpei's new TA60 family cruiser

[banpei]

(10-03-2023 07:55 PM)The Doctor Wrote:  21301 VALVE SUB-ASSY, NEEDLE
21301-15160

Thats the Toyota part number of the needle valve.
Should be around 40 euro from Toyota (if it's still available).

Weird that the carb is flooding now. Normally they don't go wrong, unless some dirt is inside the fuel bowl, or someone messed with the float height, or the needle valve.

Not sure about chinese copies of the Aisin carbs, never had anything to do with them.


//edit: i've asked a friend, he might have some spare ones.

Thanks for the part number and asking Mark!
I see the part number is compatible with the TA40 and TA60 Celica. Does that mean I could also scavenge one from the 2T-B carbs that I have lying around?

I suspect it has to do with the PTZ fuel pump that doesn't have a return line. Previously any excess fuel would flow back to the tank through the return line. This now has changed and the fuel pump continuously keeps pumping fuel to the carb. This means the pressure will not be relieved. If the needle was already a bit dodgy and old, the float would not be able to close off the fuel supply enough. Replacing the needle probably helps, but perhaps its better to find a good replacement pump or add a bypass fuel regulator in the system. But that's the opinion of a non-mechanic, so I could be totally wrong.