erratic idle - Ex-500.com - The home of the Kawasaki EX500 / Ninja 500R
 
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post #1 of 5 (permalink) Old 6-20-2018, 10:33 AM Thread Starter
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erratic idle

2008 ex500, all stock, 6,000 miles, excellent condition. runs very well after fully warmed up but the idle wanders from about 1300 to about 1900. if i lug the motor down when coming to a stop the idle usually goes down to a normal 12-1300 rpm's but if i pull in the clutch earlier before i stop the idle stays way too high(almost 2000). carbs aren't leaking, choke, cables and petcock work correctly..... any suggestions as to where to look? thanks
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post #2 of 5 (permalink) Old 6-20-2018, 10:43 AM
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Vacuum leak? Check the clamps to be sure they are snug and spray carb cleaner around them while listening for a change in idle speed.

Have you adjusted the idle mixture?

Have you synced the carbs?

Both need to be set correctly in order to get a smooth idle.
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post #3 of 5 (permalink) Old 6-20-2018, 11:16 AM Thread Starter
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erratic idle

i'll check those things. thanks
syncing i can do, i have a morgan carbtune.
adjust idle mixture? please elaborate
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post #4 of 5 (permalink) Old 6-20-2018, 11:18 AM Thread Starter
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erratic idle

i just ordered a repair manual for the bike. i'm thinking the idle mixture adjustment procedure will be explained there?
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post #5 of 5 (permalink) Old 6-20-2018, 12:06 PM
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This is for the Ninja 250, but the 500 should be very similar -

Cap removal - https://faq.ninja250.org/wiki/Removi...re_screw_plugs

Idle mixture adjustment - https://faq.ninja250.org/wiki/How_do...dle_mixture%3F
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