One cylinder

[fakejimmymorgan]

Bike sounds like it's only running on one pot at idle. Cold RH header pipe suggested blocked pilot jet. Took off carbs. Checked and cleaned jets in RH carb (didn't really remove anything as there was nothing to remove). Reassembled and still no fire o n right side at idle. Bring revs up over 2k and back onto 2 pots.

Checked plug. Left side was good and "normal" right was black and wet. Cleaned and swapped plugs same problem which gets cured over 2000rpm.

Thinking ignition fault I'm going to take off tank and check coils. May even swap them to see if the problem switches sides. Anything else I should look at?

Jimmy
1990 gs500e


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[fakejimmymorgan]

Both coils ok


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[baronduff]

Have you tried adjusting mixture on RH carb?

[fakejimmymorgan]

started at the coils and worked back to the cdi and to the battery cleaning every connection I could find.  eventually I found a connection dirty enough (on the fuse panels but don't ask me why) and it now runs well on 2 cylinders.

Lots of smoke but probably lots of unburnt fuel in the exhaust. Also noted that the oil was slightly overfull.  Followed manual and added 2.9L for oil and filter change but that was too much.  Dumped oil and refilled by eyeball instead (around 2.5L)

[fakejimmymorgan]

Fitted a clock I bought from a guy months ago.


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[crackin]

Have you checked the balance between the carbs with a manometer? Sounds like carbs to me.
I had a similar problem with my bike and the air screw adjustment was out. But i had the carbs balanced perfectly,as proven when the machanic said" i think the balance is out". So he checked it with his fancy vacum gauge kit, and she"s spot on. Build a manometer pal.
Cheers Johno

[fakejimmymorgan]

It's in my list but I've currently got 2 cylinders. Want to balance carbs anyway.


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