Hi all, I picked up this 360 about 6 months ago, it had been sitting, garaged for about 20 yrs, and it has about 7500 miles on it. The owner had put "stable" in the gas, so though the gas was bad, the tank cleaned out easily and the carbs were, generally, ok.
I rode the bike for about 2 weeks in stock form with no problems, then just befor I started the build, it started running crappy. I thought well Ill take care of that during the build. But today, though a little better, it still runs like crap.
The symptom is...it fuel fouls #2 cyl...not wet with fuel, but black soot, and of course then the plug starts cutting out.
The bike idles perfect...and before the plug fouls, it runs down the highway like a bat out of hell.
But at tip in, just off idle to maybe 1/8-1/4 throttle, it spits and sputters. Open the throttle further, and it will go ahead and run, unless its in too high a gear, then it gets worse.
The #1 plug is a nice brown color and has never fouled.
The carbs have been off and apart and adjusted numerous times. All jets and adjustments are "exactly" the same.
The compression, here @ 6K feet elevation is 110# on both cyl., (kick starter only).
What I've done...I cked the ignition system...no power loss to the coils, the spark pattern scopes out perfect side for side... but just for grins, I switched the coils side to side, with no change in the fouling. Last time I had the carbs apart, I found the sliders had turned on the diaphragms, fixed that, and now after a 30 mile ride, though it still spits and sputters @ tip in, it hasnt "totally" fouled the plug, though it is still very black.
Mods...Pod filters, supper trap, and the obvious "Cafe" stuff.
HELP! It's got to be ready for a 250 mile trip in 2 weeks... And thanks much!