hi there,
i have unstable idle for long time, it go up and down when stop at the traffic light even and i clean the acc valve.
and try to check all the hoses today.
and i found that unplug the hose from the nozzle( see pic with arrow) and the idle go very stable even i rev it up. but it suppose to be connected to the fuel regulator.
anybody know why? and can i leave it like that with no hose and find and another vacum hose go back to fuel regulator?