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4 into 1 pipe, kn filter and stock jets...still running rich

  • Thread starter Thread starter Anonymous
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A

Anonymous

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I've got a 81 gs 1000 and i have a v+h 4 into 1 pipe and a kn filter. I just got done doing a top end rebuild and a carb rebuild. Pull the plugs and they are black. I would have thought it would have been lean, real lean.
Any ideas?
ALso, the small screws on each carb, on the part of the carb thats going into the engine( they are sunk into the carbs) how do you set them? I did all the way to seat, and then backed it off 1 1/2 turns.
thanks for the help
tom
 
1.5 turns is probably not enough. All this "turns" business really confuses me - just one of my bugaboos - so let's talk about degrees. If 1.5 turns = 270 degrees, it's definitely not enough. If it's 540 degrees, that's a bit on the rich side.

Also, are you pulling the plugs after the bike was pulled into the driveway, or are you doing a plug "chop?" That is, find a long straight road, ride the bike where you feel problems, and hit the kill switch and clutch at the same time. Coast to side of road, then read the plugs.

Anyway, both through my own experience and what I've read from the experts on here, 2 turns (720 degrees) is about in the middle most of the time.
 
normal driving mixture can be somewhat controlled by placing washers on the needle mounting assembly to push them down. Have you donan all out running test to see the plug color after an1/4 mile full bore run??
TRY SUPPLYING US WITH MORE INFO PLEASE :D
 
i usually check the plugs after two or three days of driving. Normal driving condtions with the occasional rip on the throttle.
thanks for the replies
tom
 
Check the float levels, that can cause some richness. After the carb rebuild, did you have the crabs resync?
 
I would also resync your crabs. Crabs are very unpredictable, i had them once! LOL just kidding, man. Couldnt resist.
 
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