freddy3
XS650 Addict
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- 479
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Weird problem: Intermittently, RIGHT cylinder dead (i.e., pull RIGHT spark plug lead, NO change in idle....pull LEFT spark lead, engine DIES). Intermittently, LEFT cylinder dead (i.e., pull LEFT spark plug lead, NO change in idle....pull RIGHT spark lead, engine DIES). Intermittently, BOTH cylinders run normally.
Stock (OEM) 1972 XS2 650
MOST (not all!) of the time, regardless of whether starting from cold or starting the bike when warm, one cylinder won't run and the engine runs on the other cylinder (i.e., pulling the spark plug lead from the dead side has NO effect on idle, but pulling the spark lead from the running side kills the engine). Occasionally, if I let the bike sit idling for 15 minutes, all of a sudden, LIKE SOMEONE THREW A SWITCH, the idle speed will increase ~ 200 RPM, the dead cylinder will come to life and the engine'll run fine.....that is, until I turn the engine off. Then, it's like throwing dice to see what happens when I restart.
Anyone seen anything like this before?
Stock (OEM) 1972 XS2 650
MOST (not all!) of the time, regardless of whether starting from cold or starting the bike when warm, one cylinder won't run and the engine runs on the other cylinder (i.e., pulling the spark plug lead from the dead side has NO effect on idle, but pulling the spark lead from the running side kills the engine). Occasionally, if I let the bike sit idling for 15 minutes, all of a sudden, LIKE SOMEONE THREW A SWITCH, the idle speed will increase ~ 200 RPM, the dead cylinder will come to life and the engine'll run fine.....that is, until I turn the engine off. Then, it's like throwing dice to see what happens when I restart.
Anyone seen anything like this before?