idles and revs fine but zero power, won't even move
My '03 Vulcan is a little hard to crank but idles and revs great but as soon as the clutch starts to engage the tack just drops while the bike doesn’t move or barely jerks when the clutch is released. The engine runs great but with no power. It even revs up fast. It started last week in cool weather and at first I thought I was out of gas even though the bike had only run 94 miles since the last filling. I switched to reserve while still rolling but never could get the engine to do more than sputter as I coasted to a stop. It would not restart. Got it started next day but zero power and a few terrific backfires while trying to restart the bike. Removed and drained tank and removed/disassembled petcock, all looks good. Vacuum while hard to read looks around 15 with wildly shaking needle from one cylinder. Other cylinder vacuum the same. Timing light flashing for three of the four wires seems erratic. Plugs look ok but maybe a little rich but after trying the start the engine so much their color probably isn't reliable indicator. Both exhaust pipes feel strong when running although one cylinder’s exhaust is a little cooler to the hand. Money is tight so I don’t want to just swap out the ignition module on a whim but that is my next thought.
Any help would be appreciated.
Last edited by Spencer1; 01-23-2013 at 01:28 PM.