1x idling isues

[kieran88]

yeah dazza the arms connect to a diaphragm that seems like it has a bit too much resistance so we took it off to clean it, i see what you mean about the idle speed not being affected as its not connected to the diaphragm at the moment. We spent an hour or so today trying to suss it out and I'm starting to think it may be a something to do with the EGR equipment on the motor, any idea how much of this crap we are able to remove without causing too much hastle down the road? it seems like the whole thing is just so complicated by all the check valves etc, is it possible to remove some of this stuff to simplify the whole thing a bit more and maybe solve the issue it has?

[Dazza]

The diaphram is supposed to hold the throttle open slightly when you take your foot off the throttle. There should be a vaccum switching valve on the inner gaurd that is connected to it so the vac switching valve shuts off when you get below about 30 Kph and lets it idle normally. It is part of the emissions crap so you will get defected for disconnecting it if you get caught. Have a look on the other end of the throttle shaft for another idle screw. There should be two idle screws at the back. One will be the choke idle screw that adjusts the idle speed while the choke is on and will push on to a stepped cam shaped arm the other should push onto the accelerator linkage and is the one that you need to adjust.