EN500 slow return to idle (decel) - Kawasaki Vulcan Forum : Vulcan Forums
 
LinkBack Thread Tools Display Modes
post #1 of 9 (permalink) Old 01-03-2013, 09:38 PM Thread Starter
Member
 
Join Date: Dec 2012
Location: Rio Hondo, (deep south) Texas
Posts: 37
EN500 slow return to idle (decel)

Don't have another to compare to. Before and after cleaning carbs on new-to-me '07 EN500 w/ 1,300 miles, engine is slow to decelerate after hitting the throttle. Could take as much as three seconds to return to idle from 1/4 throttle. Normal? My Shadow 1100 is not like that. Pops just a tad during decel, also. Observing this both in shop and on the road.

"If you choose not to decide, you still have made a choice!"
'07 Kawasaki Vulcan 500 (hers)
JT 17-tooth front sprocket
Harley Dyna mufflers [64941-07]
Biker's Friend medium round bag
sissy bar / luggage rack [brand unknown]
'97 Honda Shadow 1100 Spirit (his)
Biker's Friend large round bag
shop-made luggage rack w/ 1.7-gal aux. fuel tank
Kuryakyn grips
VistaCruise
Memphis Shades ruby Hellcat windshield
fbnewell is offline  
Sponsored Links
Advertisement
 
post #2 of 9 (permalink) Old 01-03-2013, 11:03 PM
Top Contributor
 
Blaine's Avatar
 
Join Date: Mar 2011
Location: Prince Edward Island Canada
Posts: 1,031
Quote:
Originally Posted by fbnewell View Post
Don't have another to compare to. Before and after cleaning carbs on new-to-me '07 EN500 w/ 1,300 miles, engine is slow to decelerate after hitting the throttle. Could take as much as three seconds to return to idle from 1/4 throttle. Normal? My Shadow 1100 is not like that. Pops just a tad during decel, also. Observing this both in shop and on the road.
Your running lean.You need to adjust you idle mixture screws.

If at first you do succeed,try not to look surprised!
Blaine is offline  
post #3 of 9 (permalink) Old 01-03-2013, 11:17 PM Thread Starter
Member
 
Join Date: Dec 2012
Location: Rio Hondo, (deep south) Texas
Posts: 37
Thanks. I'll give it a go tomorrow.

"If you choose not to decide, you still have made a choice!"
'07 Kawasaki Vulcan 500 (hers)
JT 17-tooth front sprocket
Harley Dyna mufflers [64941-07]
Biker's Friend medium round bag
sissy bar / luggage rack [brand unknown]
'97 Honda Shadow 1100 Spirit (his)
Biker's Friend large round bag
shop-made luggage rack w/ 1.7-gal aux. fuel tank
Kuryakyn grips
VistaCruise
Memphis Shades ruby Hellcat windshield
fbnewell is offline  
post #4 of 9 (permalink) Old 01-04-2013, 05:10 AM
Top Contributor
 
Bear2123's Avatar
 
Join Date: Oct 2011
Location: SW Chicago suburbs
Posts: 4,477
Check the throttle cables for binding.
Bear2123 is offline  
post #5 of 9 (permalink) Old 01-04-2013, 06:45 AM
Member
 
Rhinosmash's Avatar
 
Join Date: Jan 2013
Location: Zephyrhills,FL
Posts: 96
Garage
Im having the same issue on my 96' en500, let me know if you figure out what was causing it for certain
Rhinosmash is offline  
post #6 of 9 (permalink) Old 01-04-2013, 07:25 AM
Senior Member
 
Join Date: Sep 2012
Location: Portland, ME
Posts: 304
Garage
A hanging idle is very often a result of an intake leak. I would make sure the carbs are seated well against the intake and also against the air box.

Also did you sync the carbs? Im not sure if your cleaning included fully taking them apart or not.

2000 VN800B
Phil in Maine is offline  
post #7 of 9 (permalink) Old 01-04-2013, 08:03 AM Thread Starter
Member
 
Join Date: Dec 2012
Location: Rio Hondo, (deep south) Texas
Posts: 37
I took them apart, and a few days later had a moto mechanic take them apart. He pulled the choke sliders out and cleaned them up, as well. He still has bike. Yesterday I went to his shop as he tested it. Butterflies are snapping closed at release of throttle. Carbs have been synced (ran it on gauges while I was there). I'm going down there in about two hours from now, just wanted to get some more ideas.

Thank in advance.

"If you choose not to decide, you still have made a choice!"
'07 Kawasaki Vulcan 500 (hers)
JT 17-tooth front sprocket
Harley Dyna mufflers [64941-07]
Biker's Friend medium round bag
sissy bar / luggage rack [brand unknown]
'97 Honda Shadow 1100 Spirit (his)
Biker's Friend large round bag
shop-made luggage rack w/ 1.7-gal aux. fuel tank
Kuryakyn grips
VistaCruise
Memphis Shades ruby Hellcat windshield
fbnewell is offline  
post #8 of 9 (permalink) Old 01-04-2013, 12:30 PM Thread Starter
Member
 
Join Date: Dec 2012
Location: Rio Hondo, (deep south) Texas
Posts: 37
Picked it up a few minutes ago. Mechanic did richen the idle circuit up a bit. Runs great now. No extended decel, either. Now, just need it to warm up a bit so my wife can actually ride her bike. It was 46*, north wind at about 15 mph, and misting rain when I rode it the 15 or so miles home - she won't ride in ANYTHING like that kind of weather!!!!!

"If you choose not to decide, you still have made a choice!"
'07 Kawasaki Vulcan 500 (hers)
JT 17-tooth front sprocket
Harley Dyna mufflers [64941-07]
Biker's Friend medium round bag
sissy bar / luggage rack [brand unknown]
'97 Honda Shadow 1100 Spirit (his)
Biker's Friend large round bag
shop-made luggage rack w/ 1.7-gal aux. fuel tank
Kuryakyn grips
VistaCruise
Memphis Shades ruby Hellcat windshield
fbnewell is offline  
post #9 of 9 (permalink) Old 01-04-2013, 03:02 PM
Top Contributor
 
Blaine's Avatar
 
Join Date: Mar 2011
Location: Prince Edward Island Canada
Posts: 1,031
Quote:
Originally Posted by fbnewell View Post
Picked it up a few minutes ago. Mechanic did richen the idle circuit up a bit. Runs great now. No extended decel, either. Now, just need it to warm up a bit so my wife can actually ride her bike. It was 46*, north wind at about 15 mph, and misting rain when I rode it the 15 or so miles home - she won't ride in ANYTHING like that kind of weather!!!!!
A lot of times the idle mixture screws are set to 2 1/2 turns & left.(too lean)Each bike is different & they need to be adjusted with the bike warmed up & running.

If at first you do succeed,try not to look surprised!
Blaine is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Kawasaki Vulcan Forum : Vulcan Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome