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Main Area => General GS500 Discussion => Topic started by: Suzuk-E on July 29, 2007, 11:17:42 PM

Title: Acceleration problem
Post by: Suzuk-E on July 29, 2007, 11:17:42 PM
heres what happens when i hit the gas...

theres a hesitation to go. to accelerate. sometimes when the light turns green Ill let let the clutch out and it will chug....so I have to brining the clutch back in and wait for the revs to climb. Has almost got me rear-ended not to mention makes me look like an idiot. I cant tell if it's feels like a fuel flow problem or something vacuum related. The problem seems to get better as the bike warms up but never completely goes away.

Thoughts?





Title: Re: Acceleration problem
Post by: NiceGuysFinishLast on July 30, 2007, 09:37:45 AM
at what RPM are you launching? If it's below 5.5K, you just need to rev higher and slip the clutch more.
Title: Re: Acceleration problem
Post by: Jarrett on July 30, 2007, 09:53:13 AM
rejet if you haven't already.  Check your valve clearance if your bike seems like it's taking forever to warm up.  Out of spec valves make the bike run like a turd.  Check the valves before the rejet. 
Title: Re: Acceleration problem
Post by: Slater1601 on July 30, 2007, 09:54:56 AM
A little more info would help. I pretty much have the same problem after rejetting with a stock exhaust and K&N drop in filter. I'm gonna try raising the float height a little bit when I get time.
Title: Re: Acceleration problem
Post by: scratch on July 30, 2007, 12:42:49 PM
Here's a test to see if your carburetion is lean:

After a 10-15 minute ride, put it in neutral, let it idle for a few seconds, grab the throttle and give it a good hard, fast twist, and then let go.  If it stalls, it's too lean.  If it comes down slow, it's lean.
Title: Re: Acceleration problem
Post by: Suzuk-E on July 30, 2007, 01:14:19 PM
When I do that..it typically drops rpms, almost to the point of stalling, then climbs.
Title: Re: Acceleration problem
Post by: scratch on July 30, 2007, 03:59:49 PM
I had to click on your profile and list all of your posts to read that you have a V&H pipe.

If it has been rejetted, I'm going to go with slightly rich on the bottom.  After, that...

How many miles since your last valve adjustment?
Title: Re: Acceleration problem
Post by: Suzuk-E on July 30, 2007, 04:49:19 PM
I'm running Prime. Seems a lil better.Gonna go ride a little more.

Dunno when the valves were last touched.
Title: Re: Acceleration problem
Post by: Suzuk-E on July 31, 2007, 12:21:11 PM
Yeah. Definitely some kind of carb problem.


Got links to any good how-to's on carb removal/cleaning?
Title: Re: Acceleration problem
Post by: scratch on July 31, 2007, 12:53:42 PM
The main page has one.
Title: Re: Acceleration problem
Post by: Suzuk-E on July 31, 2007, 01:10:52 PM
It sure does. Thanks.


Question: The Prime setting on the petcock bypasses the RES setting, correct? I mean, if you run out of gas on Prime...you're totally OUT of gas.
Title: Re: Acceleration problem
Post by: Jarrett on July 31, 2007, 03:00:12 PM
If you run out of fuel in prime, you are completely out of fuel.