kamakiriad

Hi, thanks for reply. The standard airbox is fitted with new filter and yes- new fuel screws. Thankyou- that's good point, from what i can remember - unless the correctors are installed further into air passage - I didn't see any correctors fitted, but will check again tonight. I'll also double check the pilot jet size. Jim

Hi, thanks for great forum. Wondering on bit of help please. I've bought and refreshed a neglected 1978 USA GS1000 - valve clearances, filters, points, cleaned carbs, new fuel screws etc. Problem is running rich/black plugs on all carbs. Using a colortune, the only way I can get the bike to run well and colour correctly just off yellow/rich, is with fuel screws a whisker off seated and air screws way out up to 2.5 even 3 turns. If I touch fuel screws even to 1/4 turn from seated the mix will overly richen. Float heights are good and I've checked fuel levels in the bowls after sitting primed, and all good. Pilots are standard size and choke plungers work well and shut off okay, although these were first thing thought of as culprit (any ideas how to check without removing carbs?) . Coils are originals work okay. Just concerned running with air screw so far out will affect mix further up throttle. Any help much appreciated. Jim