got an 87 3.5 efi on petrol and lpg runs fine except idles at about 1200 rpm in neutral or park, holds in drive at about 600 rpm so if i merely adjust the idle speed on the plenum wont it cut out when i put it into drive ?? any thoughts on the subject would be good before i start messing about...

Hi all , as the title suggests i am not so much a new starter on this as i have been a member for some time i just have never really got round to doing the post thing , mainly due to lack of time but that is about to change . i have an 87 rr 3.5 efi, my pride and joy, do all my own servicing...

got a prob with my 88 classic in that i get a vibration at anything over 40 mph it almost feels like the props but i have changed all uv's , wheel bearings and cv joints and obviously wheels and balancing are fine. it only seems to do it when i'm accelerating, if i coast it stopsany ideas? also...