First startup on front cylinder only - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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post #1 of 3 (permalink) Old 02-24-2006, 12:27 PM Thread Starter
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First startup on front cylinder only

For the first start of the day, my bike starts up on the front cylinder only. If I give it some throttle, I get a backfire out of the left pipe, and the rear cylinder comes to life. Every start for the remainder of the day is normal. Anyone experienced this problem?
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post #2 of 3 (permalink) Old 02-24-2006, 02:36 PM
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Maybe your rear cylinder is a late riser or needs coffee to get it moving in the morning? Is your bike a real pain to start the first time of the day then?
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post #3 of 3 (permalink) Old 02-24-2006, 06:23 PM
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not the expert, but to me sounds like the carb for ur second cylinder is leaky. not used to the one carb per cyl set up yet. Had a friend with a 79 f250 with a 390 in it. he had trouble starting it for the first time after a sit, turned out that he had a leaky 2nd carb (he was on a 4 barrel set up). had the same symptom of back fire meaning full mix was too rich...

what year is it and have u mixed with the fuel/air mix screws?

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