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Old 22nd April 2009, 08:39   #1
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Default HH Hunk, Bike revs high on it own

Hi Gurus,

I have a Hero Honda Hunk which I purchased last year. Since 2 days I am facing RPM problem. The bike reaches 5,000 RPM in first gear and riding it is becoming increasingly difficult because of the vibrations in the handle. It has so far completed 6,000 KMS only and has been serviced every 3 months.

Please help!
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Old 22nd April 2009, 09:44   #2
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IMHO, looks like a accelerator cable or clutch setting problem. A visit to the Service Center should cure it.
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Old 22nd April 2009, 10:10   #3
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Could this also because of air filter clogging?
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Old 22nd April 2009, 10:16   #4
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This could also be an idling problem as well. Does the RPM increase when its in neutral? Do check if you are riding with choke on. These are small things which you might have checked already, but no harm in checking them.
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Old 22nd April 2009, 10:28   #5
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Quote:
Originally Posted by cruiser_1982 View Post
This could also be an idling problem as well. Does the RPM increase when its in neutral? Do check if you are riding with choke on. These are small things which you might have checked already, but no harm in checking them.
I checked the choke part. Its not on. I guess you are right. Even in neutral, I remember seeing the RPM meter hovering between 1-2k. Planning to take her to the service station in the evening.
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Old 22nd April 2009, 10:44   #6
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Quote:
Originally Posted by amtak View Post
Could this also because of air filter clogging?
Theoretically Yes! But, I don't think so it is the case with yours.

Do check the manual, I think there should be a mention of the revs the bike should have at idling after becoming a bit warm.
Then also have a look at the placement of the idling adjustment screw in the manual and adjust it accordingly. It's a pretty easy DIY job.

If the manual doesn't help you in doing this, do ask about its whereabouts at the service center.
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Old 22nd April 2009, 10:55   #7
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Thanks Five46 I'll keep you all posted on what happens!
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Old 22nd April 2009, 11:01   #8
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Cheers! Do update about it in your bike's proprietary thread as well.
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Old 22nd April 2009, 11:02   #9
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amtak. bunch of questions.

At what rpm did the bike idle before this issue.
At what rpm does it now idle.

Does the rpm raise on its own or under acceleration.
Do you need to acc more now for pickup.

Has this continued to occur over more than one tankful of petrol.
did you change your filling station by any chance.
did you use Premium petrol instead of ordinary or vice versa.

Has the top speed changed.

Does the vibration also occur when not acc at all.
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Old 22nd April 2009, 11:50   #10
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Originally Posted by bblost View Post
amtak. bunch of questions.

At what rpm did the bike idle before this issue. Never noticed this
At what rpm does it now idle. 1K min. Just at startup!

Does the rpm raise on its own or under acceleration. Only after I accelerate but goes upto 5k even at the slightest acceleration. Never used to happen this way.
Do you need to acc more now for pickup. Yes

Has this continued to occur over more than one tankful of petrol. This started happening when my last tankful was getting over. Continued ever since. About 3 days now.
did you change your filling station by any chance. Last tankful I had to, but filled in from a reputed COCO
did you use Premium petrol instead of ordinary or vice versa. No. Normal fuel.

Has the top speed changed. Yes, Now it is between 60-70/80 instead of 110!

Does the vibration also occur when not acc at all.
Yes. It vibrates a lot.

The bike is touching 5k mark in the fifth gear and the speed is just 50 KMPH. Vibrating like a nokia 3310
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Old 22nd April 2009, 11:54   #11
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CLUTCH.

Either the clutch is fried or the cable is jammed up.
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Old 22nd April 2009, 12:10   #12
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Wow that was one nice list of Qs Bblost

Amtak looks like a Clutch plate problem.

Btw do one more thing, next time the bike revs high try to pull the choke lever & see if the revs come down.

Btw did you show this to Service center guys?
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Old 22nd April 2009, 12:17   #13
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Quote:
Originally Posted by bblost View Post
CLUTCH.

Either the clutch is fried or the cable is jammed up.
Oops! but I am a sedate rider.

Quote:
Originally Posted by Technocrat View Post
Wow that was one nice list of Qs Bblost

Amtak looks like a Clutch plate problem.

Btw do one more thing, next time the bike revs high try to pull the choke lever & see if the revs come down.

Btw did you show this to Service center guys?
Priyank, I am taking the bike to the service center today in the evening and would leave it with them. I tried to pull the choke, the engine cuts off. I showed my bike to the TBHP service guys first. Trust them more than the HH folks!
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Old 22nd April 2009, 12:23   #14
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Ask the HH guyz to check the regulator, i was facing the same problem in my extreme and the regulator was the culprit.
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Old 22nd April 2009, 12:39   #15
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Quote:
Priyank, I am taking the bike to the service center today in the evening and would leave it with them. I tried to pull the choke, the engine cuts off. I showed my bike to the TBHP service guys first. Trust them more than the HH folks!
Hmm Usually if the bike is too lean it revs high on hot days & pulling choke brings the revs down. Anyways looks like carb/throttle issue if not clutch.

Btw Who's Priyank
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