![]() Use no fuel filters, make sure the fuel lines are re-enforced lines, and verify the petcock is flowing properly and working right. Any chipped/broken boots should be replaced. If the last 1" or so gets really hard and stiff, I strongly suggest you pull the boots off, clip it back to the soft, and screw the boots back on snugly. Also verify the plug wires are soft/flexable all the way onto the boots. Low light with the tank off let the bike run and check for arcing especially down in the plug wells. This part HAS to be done or you will have terrible running issues at lower rpms.Īdditionally, check the spark issues. no fuel should leak.) Once verified, put the carbs on the bike with the airbox and right filter. (use a aux fuel source and fill the bowls, let it sit with fuel flowing. Once you have them fully cleaned and reassembled, bench sync them and bench test to make sure they do not leak fuel. Fuel treatment is a preventative measure, not a fix for the katana CV carbs. The majority of the places that fuel would have seeped into and varnished up are air passages, and fuel treatment in the gas while running the bike won't get to those spots to make a difference. If you don't dip the bodies, then you will never have them clean, and the bike won't run right. Do the full disassemble, soak the carb bodies in the berryman's chem dip 24 hours each. Use an OEM equiv filter in the stock airbox. ![]() The carbs will never function right with it. Unless the carbs are ridiculously out of sync, problems in that area usually show up at higher RPM and do not affect idle- they make the bike shake like crazy when you roll the throttle on because the cylinders are fighting each other by trying to run at different speeds.ĭitch the K&N. Was there a K&N filter on it when you bought it, or is that something you added in place of the stock one? The intake system (filter) needs to match the way the carbs are jetted, so if it was set up for a stock filter when you bought it your first step is to put a stock one back on it.Īlso, have you checked for good spark at all four cylinders? You would not be the first to have a loose plug wire or some other ignition problem following a plug removal/ replacement.Ī valve adjustment problem would cause all kinds of funny noises, but not necessarily the problems you are having. Did you actually take the carbs apart and meticulously clean every little part and inner passage? Or did you just spray some carb cleaner on them to make them LOOK clean? Gas turns to varnish as it gets old, and it leaves a nasty coating when it dries, so the little inner passages and parts get pretty boogered up and no amount of spray on the outside or down the throat of them will help.
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