front jug not firing - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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post #1 of 6 (permalink) Old 08-21-2016, 04:40 PM Thread Starter
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front jug not firing '85 Kawasaki 700 Vulcun

front cylinder doesn't fire until it hits 3 grand or higher. Carbs rebuilt, working fine, front plugs come out wet and fouled. Spark and timing work fine (I swapped coils, replace igniter). No luck yet, my 1st guess now is valve hanging up . Bike was in garage 10 years not running but I went through and it now starts and runs great over 3 grand ,Idle I can hold it about 2 grand, runs on rear cylinder only, front cylinder blowing out cold. Any ideas on what to try/or causes? Thanks ED

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post #2 of 6 (permalink) Old 08-21-2016, 07:21 PM
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Float height

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post #3 of 6 (permalink) Old 12-15-2016, 08:39 AM
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Hello....I have the same problem. I have a '96 that was stored for 13 yrs. (3800 miles). After getting the bike, I had a motorcycle mechanic go thru the carbs. He replaced the needles and seats, one diaphragm and gaskets. The tank was cleaned and I have ridden it about 300 mi.

The bike sounded like it was not firing (front cyl) when started; but after running for a couple of minutes, it ran well. On the road, it ran very well---plenty of power and idled fine. Then recently the front cyl. seemed to stop firing. I pulled the plugs and both front cyl plugs are wet; but, when I checked the coil, the resistance numbers are good (both primary and secondary). I swapped a coil from a 750 parts bike that I bought...no change.

Did you resolve your issue and if so, what did you learn to be the problem...Tony [email protected]
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post #4 of 6 (permalink) Old 12-15-2016, 09:07 PM
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float height or sticky float needle.in carb section look up sticky for Wolfie's blowback method

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1986/5 Vn700/750 Frankenfook cross eyed bitch "Mellisa Fayhe"
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lowered with progessive 412 10" shocks
rejetted for K/N Pods part#rc 2340
sportster seat

'I didn't lose my mind.i gave it away

BRING BACK WOLFIE."Peace and Carrots"RIP
"And I'm free...as a bird"John Lennon Free as a Bird
"I only carry when I have my pants on"Joe Robinson RIP aka Old Dog
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post #5 of 6 (permalink) Old 12-15-2016, 09:52 PM
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better yet here ya go https://www.vn750.com/forum/showthread.php?t=25458

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1986/5 Vn700/750 Frankenfook cross eyed bitch "Mellisa Fayhe"
I am a BIKER and i'm proud.FREEBIRDS MC CENTRAL NY

lowered with progessive 412 10" shocks
rejetted for K/N Pods part#rc 2340
sportster seat

'I didn't lose my mind.i gave it away

BRING BACK WOLFIE."Peace and Carrots"RIP
"And I'm free...as a bird"John Lennon Free as a Bird
"I only carry when I have my pants on"Joe Robinson RIP aka Old Dog
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post #6 of 6 (permalink) Old 12-16-2016, 11:42 AM
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Thanks for the information...I'll give it try.
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