23-02-2012, 11:44 AM
SKoob Wrote:Yes that's the one, mine has a dodgy idle as it is. When started it idles at 1k, then about 30 secs later it will idle at 1250ish then after a hard ragging it will start idling around 450 to 500rpm. It's quite random when it happens as sometimes will behave properly and idle at 850ish. The second I add mote fuel it goes crazy though.
The reason for the initial jump from 1000 rpm to 1250 is because your glow plug relay times off and the load is therefore taken off the alternator, and so the idle speed increases.
The (probable) reason for the drop in idle speed after heavy use is your hot idle screw position in relation to the idle lever behind the pump. It could be that the wax stat/wire system which controls this has slackened over time and therefore only fully activates (thus lowering idle) at high engine temps.
My 2 cents anyway..
Captain Standard