Quote Originally Posted by nissannewby View Post
The small ac idle up diaphragm has a small screw and locknut on it. You can use this to adjust it. As 3d has said double check the vac lines are connect and havent been bumped when they have tuned it.
Thanks Matt. Once again it stopped doing it and now I can't replicate it again.
I checked all vac hoses in the vicinity and traced them around the engine bay and can't really see anything lose... Once again will keep an eye out on it.
Obviously the bloke disturbed something.