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Post by markymark on Jan 15, 2022 21:51:55 GMT
hi all just bought myself xj600s 1997 as a project.
had a problem with some electrics to get it running but thats sorted now.
the problem i have is once the bike is running i cant rev it up and it will only with choke on, it wont idle with choke off.
i have put new plugs and new fuel (super unleaded e5 not e10)
can any one give advice.
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Post by Pool Boy on Jan 15, 2022 23:43:30 GMT
Sounds like the problem I had with a Virago 535 - carb diaphragm damaged.
(Had similar with an Escort too )
Failing that, blocked jet(s) or sticking float or even fuel filter ?
All worth checking IMHO
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Post by bobh on Jan 17, 2022 13:10:49 GMT
I'll second blocked jets - the pilot ones are tiny and can easily get blocked by the reisdue of old petrol. If it was a problem with just one carb, you'd expect the engine to run, but only on three cylinders.
You might get away with adding a strong dose of Silkolene Pro FST to your nice fresh fuel, and just running it until it gradually clears. I'm told IPA (isopropyl alcohol) does a similar job more cheaply. If that doesn't work, you'll need to take the jets out and clean them through with carb cleaner or similar solvent. An owner (not of a Divvy) that I know managed to do this, though he said it was nearly 200 miles before the engine ran completely cleanly.
From what I've gleaned here and elsewhere, ultrasonic cleaning of the carbs doesn't always clear the problem.
Good luck - Bob
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