VN 750 won't idle... - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
Carbs and Fuel System
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post #1 of 23 (permalink) Old 06-06-2006, 01:07 PM Thread Starter
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Unhappy VN 750 won't idle...

I have a 96 that will not idle. It starts fine and runs well on the highway. This bike was not actively ridden for the past three years. However it was started and ridden around the neighborhood from time-to-time.

I found the idle stop cable was broke and replaced it. I was sure this would fix the problem. It did not… I have tried the Sea foam and put in new plugs.

I have to crank the idle up to above 2K but any thing below that and it will slowly idle down and quit.

I guess my next step is to pull the carbs and clean them out but that is a last resort.

Any ideas?

Thanks for any and all help.
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post #2 of 23 (permalink) Old 06-06-2006, 03:35 PM
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If it runs OK when you are on the move & you're having to crank the idle up that high I would say the pilot jets are blocked. If they turn out to be OK then something else that could be worth checking is that the rubbers between the carbs & the engine are not split & allowing air to get in. The same goes for any other vacuum hoses around the carbs.
Hope this helps.

1991 BMW K1100LT

1980 Suzuki GS1000G
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post #3 of 23 (permalink) Old 06-07-2006, 07:50 AM
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I'm with Ernie. When I purchased my wife's 94, it did the same. Once it started (with the choke) and got it out on the road it ran well, ok. But it would not idle on it's own.

I cleaned and rebuilt the carbs. And it's been great ever since!

By the way, the only reason you're excused from NOT riding as much is if you're on duty! Thanks for your service!

1999 Concours
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post #4 of 23 (permalink) Old 06-08-2006, 03:24 PM
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yep, I'm betting on pilot jets clogged.

Fergy
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post #5 of 23 (permalink) Old 06-09-2006, 09:45 AM Thread Starter
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Well I guess I will pull the carbs, give them the once over and see what happens. I placed my order for a repair manual yesterday, I’m sure it will pay for its self. One thing for sure…This undertaking will have to wait till after vacation.

Thanks for the replies!!!
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post #6 of 23 (permalink) Old 06-19-2006, 10:47 PM
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If you can, get both the Kaw manual and the Clymers. Both have their strengths and seem to fill in for each others weak areas. I use both extensively.

Jim W
93 VN 750 "Ursula"
Moved R/R 08Sep06
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New Stator installed 10 Jun08
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post #7 of 23 (permalink) Old 06-24-2006, 08:35 PM
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do you hapen to have a picture or photo of vacuum hose lay out or connections...I seem to have a disconnected hose and can't find a place for it. thanks
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post #8 of 23 (permalink) Old 06-24-2006, 09:08 PM
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Go to Kawasakis web site under Owner Info, Parts Diagrams. All of the micro fiche diagrams are there and you will see where the hoses are supposed to connect.
There are only two actual vaccuum hoses coming off the carbs. One goes to the fuel petcock and the other is for California bikes or those which have the evaportive fuel system installed. This line goes to the charcoal canister to draw gas fumes from the tank for recircualation.

Jim W
93 VN 750 "Ursula"
Moved R/R 08Sep06
R/R rewire 17Feb07
New R/R, Installed 14Jun08
New Stator installed 10 Jun08
Maintenance Free Battery 12Jan08
21480 Miles
VROC #8542
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post #9 of 23 (permalink) Old 06-24-2006, 10:46 PM
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How much do the kits cost ??? Any idea?And , if you know how long will it take to do a carb job?
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post #10 of 23 (permalink) Old 07-01-2006, 08:03 PM Thread Starter
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I started working on the bike today. So far the only thing I have found is that the “Slow Jets” were blocked…

It is a pain in the rear to pull the carbs on this bike! It can, however be done!

More to follow.
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