Plugging reed valve/coatering/marbling?? - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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post #1 of 19 (permalink) Old 08-28-2010, 01:09 PM Thread Starter
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Plugging reed valve/coatering/marbling??

Ok, I see this has been covered a ton, but I'm still confused (this happens a lot with me) I see the reed valves and I see the 2 5/8" hoses that run to the vacuum thing under the seat. Obviously, I want to get rid of some of the popping. So, can I just remove the hoses and cap off both ends (of the reed valve and the vacuum thing)? Or, just cap off both reed valves and remove the vaccuum thing? Oh, and cap off where the small hose comes off the carb too? I can't find any pics of what people are doing and I guess I'm a visual learner lol. Thanks guys.
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post #2 of 19 (permalink) Old 08-28-2010, 02:53 PM
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I just popped the 5/8"?? hoses off the reed valves and stuffed a marble in'em and stuck'em back on the reed valves, I used marbles that fit snug in the hose...
Best I remember that is all I did... Others may offer better help though...
Small hoses??? I don't know about...
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post #3 of 19 (permalink) Old 08-28-2010, 02:59 PM
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I pulled off both of he 5/8" hoses, removed all the emission crap, and capped off he small vacuum hose. I also found two 5/8" heater core caps to cap off the read valves.. then later went with coasters for a cleaner look.
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post #4 of 19 (permalink) Old 08-28-2010, 03:07 PM
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I did not have the reed valves on my Canadian bike.

Old Dog gave you the simplest and cheapest solution, which is also easily reversible if needed or desired to pass emission testing.

Here is a link to the Vulcan Verses with answers to all your questions.
https://www.vn750.com/forum/showthread.php?t=1083

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post #5 of 19 (permalink) Old 08-28-2010, 04:03 PM Thread Starter
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Well, I took the 2 5/8's hoses off and put rubber caps on them, put a little cap on the carb and pulled the vacuum thing out of there and...it's runs like crap so I'm guessing I did something wrong lol. Stalled twice in an intersection, which was fun. It has a serious lack of power when you first start going and it reeks like gas. I'll put it back the way it was and see if it runs better. Thanks guys

Guess I'll try to find some marbles.

Last edited by Freedom; 08-28-2010 at 04:05 PM.
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post #6 of 19 (permalink) Old 08-28-2010, 07:09 PM Thread Starter
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Update, put everything back where it was, still runs like crap. Seems to knock louder than normal and smokes. I did notice a hose going nowhere coming off the right carb tee'd to another hose, but it may just be a vent. Also, it stalls when I put the choke on, didn't used to do that. Any help?
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post #7 of 19 (permalink) Old 08-28-2010, 09:57 PM
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Are you giving it choke once it's running, or just to get it started and warmed up? If it needs choke to run, there's a problem, most likely dirty carb.

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post #8 of 19 (permalink) Old 08-29-2010, 10:35 AM
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Quote:
Originally Posted by Freedom View Post
Update, put everything back where it was, still runs like crap. Seems to knock louder than normal and smokes. I did notice a hose going nowhere coming off the right carb tee'd to another hose, but it may just be a vent. Also, it stalls when I put the choke on, didn't used to do that. Any help?
That is a vent, and the two hoses from each carb that goes to the T should run the 3rd hose into the right airbox. This would cause problems if the bike is moving, as air flowing over the top of the loose hose would effect gas flow.

If the bike ran fine before you did anything, than I would have to suggest you missed something putting it all back.
Make sure the T'd hoses go to their respective spots, and take the hose out of the air box and cut the end at a 45 degree angle and then put it back. This keeps it from bottoming out in the airbox and sealing off the vent...which could be the cause of your problem.

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post #9 of 19 (permalink) Old 08-29-2010, 02:09 PM Thread Starter
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So that vent hose goes to the airbox? I checked both airboxes when I first got it and there never was a hose in either of them. But that vent hose just runs under the gas tank. So, there is a hole in the airbox for a hose? Must have missed that when I had it apart. Thanks.
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post #10 of 19 (permalink) Old 08-29-2010, 03:39 PM
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Quote:
Originally Posted by Freedom View Post
Update, put everything back where it was, still runs like crap. Seems to knock louder than normal and smokes. I did notice a hose going nowhere coming off the right carb tee'd to another hose, but it may just be a vent. Also, it stalls when I put the choke on, didn't used to do that. Any help?

An alternative....1/2" copper cap over fittings, then replace hose.

Then seat mixture screws...then back them out 2 1/2 turns each.

Last edited by VoIPDoc; 04-26-2011 at 11:10 PM.
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