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post #1 of 4 (permalink) Old 06-16-2009, 05:27 PM Thread Starter
 
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rpms

hey if anyone can help it would be great. the problem is that when i am riding down the road and i come to a light or a stop sign my rpms are at 3 thousand and it takes alittle bit for them to come back down to normal if anyone has an idea on how i can fix this problem it would great.
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post #2 of 4 (permalink) Old 06-16-2009, 05:33 PM
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If your bike is fully warmed up, first thing I would check is throttle cables. Make sure they aren't binding and that your throttle is returning to the throttle stop freely. If it isn't smooth, you might need to lube or replace your cables. You didn't mention how old your bike is. Add that to your sig so it will show up on your posts. If the throttle is returning freely to the stop, you might have a vacuum leak. Check vacuum hoses for cracks etc. You can also use spray carb cleaner and spray around your vacuum hoses and the intake manifolds with the bike idling to see if you can cause the idle to stumble while spraying around possible leaks. If so, you've found the leak. The smog control system can also be leaky, as it works off of vacuum. Any amount of extra air getting into your system can cause the idle to rise. Hope this helps you out! Your CV slides might be hanging up as well. You might try a dose of seafoam in the gas to see if it clears up. But try to check vacuum leaks for sure. A vacuum leak can cause damage to your cyl and pistons if you let it go.

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Last edited by fergy; 06-16-2009 at 05:36 PM.
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post #3 of 4 (permalink) Old 06-16-2009, 06:15 PM
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X2 to fergy`s suggestions.
And since I missed your opening post on the Newbie forum, welcome to the Vulcan madness. If you spend some time looking back through old threads and the Vulcan Verses, you will pick up on a lot items and issues the vn750 has. Also check out the TEN THINGS link at the bottom of my sig. Many regular contributors on the forum weighed in on this thread too.

Gordon

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Purchased May 16, 2008
Approx.19,300km (12,000 miles)

H-D windshield
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F&S luggage rack and engine guard
Kury Offset Hiway pegs
July 13, 2016, Riding on the DARKSIDE now, Classic Radial 165/80-15


TOP TEN THINGS A NEW RIDER/OWNER SHOULD DO. Click on link.
https://www.vn750.com/forum/11-vn750-general-discussion/9127-top-ten-items-you-would-suggest-new-owner-do-his-new-ride.html
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post #4 of 4 (permalink) Old 06-20-2009, 07:06 AM Thread Starter
 
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I adjusted the carb and now it idles just fine thanks for all ur help guys appreciate it all
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