Carb Synchronizer - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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post #1 of 7 (permalink) Old 04-17-2015, 02:22 PM Thread Starter
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Carb Synchronizer

Anyone know where I can find one, at a parts store or something? I'd prefer not to be patient and order one, but if I have to, so be it. Far as I can tell, none of the "Auto Zone" type places have one.

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Need to know the part number to a confirmed 18mm Deep Well socket bit to change your VN750's spark plugs?

Craftsman Part Number 50728

Last edited by OrlandoVulcan; 04-17-2015 at 02:25 PM.
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post #2 of 7 (permalink) Old 04-17-2015, 02:32 PM
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A couple of members made their own, Goofyfoot is one and I think he made a youtube on it.

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post #3 of 7 (permalink) Old 04-17-2015, 04:28 PM
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Originally Posted by Spockster View Post
A couple of members made their own, Goofyfoot is one and I think he made a youtube on it.
Can't remember if I did. But what I will tell you that it seemed to do better after I had the carbs off the bike and just eye balled it. To make the manometer just go to lowes or home depot and buy about ten feet of 1/4in clear tubing and a yard stick or any wood and tack it up like this



Fill it to halfway up both tubes with 2cycle oil (if it gets sucked back into your carbs, no harm no foul).

Connect one end to your carb on the right side and the other with a 'T' also got a lowes, to the left side at the vacuum connection going to the petcock. I think. been a while.

Here is a vn carb synching video https://www.youtube.com/watch?v=S-EX9ZmYUPQ

My video on what you are doing when you carb sync https://www.youtube.com/watch?v=Zc59BThqRa4

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post #4 of 7 (permalink) Old 04-17-2015, 07:13 PM
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http://www.komar.org/faq/manometer/ look at the pictures, i used i think 1/3 in to hold 2 stroke oil, and then 1/4 to go from that to the carbs. Use 2 stroke oil, cuz if you have a leak water will just get sucked right up into the engine.

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post #5 of 7 (permalink) Old 04-17-2015, 08:16 PM
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After watching the two vids it looks like this could be easily done with two vac gauges. Although I like the tubing method BC it gives you a very accurate comparison of the two ports. Interesting.
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post #6 of 7 (permalink) Old 04-17-2015, 09:13 PM Thread Starter
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You guys are awesome!

I'm gonna run with the homemade type. I'll let you all know how it goes.

The reason WHY I'm doing it is that I'm getting some choppy acceleration and "up and down" idling. I have yet to clean the carbs out, other than spraying carburator cleaner in them while they are still in the bike. Hoping a spark plug change to the right spark plugs will help. The gas leak that I had still exists, simply because I can't fix it until I can get those carbs out.

Mike's Moving
Orlando, Florida

2002 VN750

Need to know the part number to a confirmed 18mm Deep Well socket bit to change your VN750's spark plugs?

Craftsman Part Number 50728
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post #7 of 7 (permalink) Old 04-18-2015, 11:31 PM
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Ok I learned something new due to Goofyfoot. I have never synced carbs before but I always thought it was a carb adjustment on the mixing screws on both carbs. I am truly glad I watched his video's on syncing and now I can do this correctly.

Grace and Peace to you!
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