Bike starts funny. - Kawasaki Vulcan Forum : Vulcan Forums
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post #1 of 13 (permalink) Old 03-22-2012, 11:18 AM Thread Starter
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Bike starts funny.

Thought I'd better check with yous guys before I head to the dealership...
I'll try to explain this as best as I can.
When starting the bike cold, I turn on the key, wait for the weird little buzz to stop, then hit the starter. It starts out with a "chug chug chug" , then gets a little faster "chugchugchug", then raps out to high RPMs. After a couple seconds really high rpms, it idles back down to normal. It's done this since I bought it last year (it's got 13,600 miles on it). Anybody every had their bike do this?
BTW, battery is new, charging is perfect, new plugs, new air filter.
Talked to the dealer and he said something is wrong...shouldn't be doing that.
He said he's been so busy, he'll have to keep my bike for at least 2 weeks.
Would like to see it I can get this figured out so I won't be without my baby for that long.

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post #2 of 13 (permalink) Old 03-22-2012, 11:51 AM
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Quote:
Originally Posted by Chupa View Post
Thought I'd better check with yous guys before I head to the dealership...
I'll try to explain this as best as I can.
When starting the bike cold, I turn on the key, wait for the weird little buzz to stop, then hit the starter. It starts out with a "chug chug chug" , then gets a little faster "chugchugchug", then raps out to high RPMs. After a couple seconds really high rpms, it idles back down to normal. It's done this since I bought it last year (it's got 13,600 miles on it). Anybody every had their bike do this?
BTW, battery is new, charging is perfect, new plugs, new air filter.
Talked to the dealer and he said something is wrong...shouldn't be doing that.
He said he's been so busy, he'll have to keep my bike for at least 2 weeks.
Would like to see it I can get this figured out so I won't be without my baby for that long.
You might consider a different dealer. I don't think this one knows what he's talking about. It is normal for the 900 to kick into a high idle in steps immediately after starting. It'll remain in high idle for a couple minutes before settling down into a normal idle speed. I think it does this to make sure that everything gets oiled properly before taking off riding.

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post #3 of 13 (permalink) Old 03-22-2012, 12:33 PM Thread Starter
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I knew this was gonna be hard to explain. I know all about the high idle. That's not the issue. It's the low chugging at cold start-up that has me worried. Sometimes it chugs so slow that it sounds like it's gonna die, then raps out to near redline, then idles back down.
I trust the dealer. Never brought anything to him before to fix, but he buys alot of BRP parts from me. He's a good guy. Never hear any complaints about him.

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post #4 of 13 (permalink) Old 03-22-2012, 12:39 PM
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What is your Idle rpm set at. Sounds like it may be low. The High Idle is normal for two reasons, cold engine and low voltage. The chuging indicates not enough idle.

John
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post #5 of 13 (permalink) Old 03-22-2012, 12:44 PM Thread Starter
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Hmmm. I've never played with the idle adjustment. So, just turn it up a little and see what happens?

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post #6 of 13 (permalink) Old 03-22-2012, 01:09 PM
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Yea try a quarter turn at a time.
Mine will chug if the idle is to low.

John
"I am a modern cowboy, on a steel horse I ride"
09 VN900 Classic
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post #7 of 13 (permalink) Old 03-22-2012, 01:16 PM Thread Starter
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Just walked back and talked to our techs, and one of them had an ECHO brand pulse engine tachometer. He said just set it for the type of engine and hold it up to the plug wires and it'll tell me what the rpms are. I'll give that a try. Should be around 950 right?

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post #8 of 13 (permalink) Old 03-22-2012, 02:25 PM
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Yes, MOM says 1000 +- 50 rpms. I try to keep mine around 965. I have a power commander which gives me the rpms so I can keep an eye on it.

When you check the idle remember to let it warm up and drop high idle first.

John
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Last edited by Bytehead; 03-22-2012 at 02:28 PM.
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post #9 of 13 (permalink) Old 03-22-2012, 02:33 PM
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It's a V-twin with a single pin crank so it's gonna "chug" when it starts, mine does the same thing.

'09 Vulcan 900 Custom
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post #10 of 13 (permalink) Old 03-22-2012, 09:57 PM
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Chupa,

You just described how mine starts.

KB

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