Need advice on front cylinder showing wet plugs - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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post #1 of 5 (permalink) Old 08-24-2019, 11:32 AM Thread Starter
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Need advice on front cylinder showing wet plugs

Got my scoot all put back together, and fired it up. 1st time I didnt know about the reference marks on the boots and heads. MASSIVE vacuum leak!!! Got that taken care of and now she starts and idles ok, but has no power and has VERY poor throttle response. Checked spark plugs and rear was clean and dry, and front was soaked in gas. Checked spark to front cylinder and was a nice blue spark ( well bluish white) I checked the vacuum line for the petcock and it was dry. The carbs were clean when I inspected them, and I ran carb cleaner and compressed air through them before reassembling them. I keep hearing that I need to sync my carbs, but since the problem is with the front carb and it's the reference, that doesnt seem to make any sense. Am I missing something??? Oh yes, forgot. Front pipe is hot, but you can touch it while its running. Rear pipe is REAL HOT like I would expect it to be,
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post #2 of 5 (permalink) Old 08-24-2019, 03:29 PM
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Stuck float?

Don't think it's carb synch. As long as both butterflies open at the same time, you're good.

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post #3 of 5 (permalink) Old 08-24-2019, 04:25 PM Thread Starter
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I was leaning that way also. I rapped the carb a few times with a screwdriver handle, but with the floats on the inside of the carbs I dont know how well that works.
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post #4 of 5 (permalink) Old 08-27-2019, 05:05 PM
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Look at the sticky "Wolfies blowback method"

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post #5 of 5 (permalink) Old 08-27-2019, 10:01 PM Thread Starter
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I was going to do the blowback as wolfie described in his post. When I was looking to see where the drain was to hook up the tube,I noticed a small arm was hanging down not hooked to anything. Turns out, I must have forgot to put the very tiny cotterpin to hold it in the brass bushing. It went from the bolt where you sink the carbs. The front carb was not even hooked to the linkage. Put the arm back into the bushing on the arm and installed the pin. Put everything back on and fire it up. HOT DANG!!!!! Idles perfect, quick throttle response, and no bogging. I appreciate the input and if it wasnt for wolfies blowback method I never would have seen that arm without pulling the carbs AGAIN!!! Finish a few more minor things and hopefully I will be riding it to work before Dorian gets here.
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