Lobo
Member
Hi I'ma new member with a 1981 GW interstate. I have a problem ,,,,it, starts , it runs , but it's getting @26 mpg and running so rich it'll blacken the plugs in 15 min of idle. we've isolated the problem down to the idle adj screw,(maybe ) no matter where we set the idle adj screw it runs super rich, unless we take it out , then it runs super lean. It is my understanding this adjustment regulates vac, thus sucking more or less gas , backing the screw out should result in a leaner mixture. We've cleaned all ports and channels we can find . is there a channel that runs up to the main air intake body? Basically the idle adjusting screw makes no difference , all the way in or backed out 1-5 turns , unless it's all the way out and out of the bike. Any suggestions ?
LOBO
LOBO