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14-12-09, 07:16 PM
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#31 | |
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Re: Damaged piston (VFR400)
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Cheers, Dave |
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14-12-09, 07:35 PM
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#32 |
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Noisy Git
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Join Date: Apr 2007
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Re: Damaged piston (VFR400)
Seals up dodgy rings temporarily, if it is still low after that it is valve.
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Now rebuilding a 63' fishing trawler as a dive boat |
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14-12-09, 07:36 PM
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#33 | |
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Noisy Git
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Re: Damaged piston (VFR400)
Quote:
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Now rebuilding a 63' fishing trawler as a dive boat |
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14-12-09, 07:41 PM
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#34 |
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Re: Damaged piston (VFR400)
Bah, I hate when things go wrong.
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14-12-09, 07:49 PM
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#35 | |
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Re: Damaged piston (VFR400)
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Indeed it sucks ****! I hope it gets sorted soon mate! 
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14-12-09, 07:53 PM
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#36 | |
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Re: Damaged piston (VFR400)
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14-12-09, 08:01 PM
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#37 |
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Re: Damaged piston (VFR400)
Get it out of the bikeshop it's in and have someone else give a second opinion. Sounds to me like a knackered sprag which was hidden by a duff battery previously. Your current shop don't apppear to have a clue.
As you said, it ran fine when bump started a week previously, so there's no reason why it won't run properly now. I'd have another bike shop check out the Reg/rec while they're at it, sounds like it has a charging problem as well. |
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14-12-09, 08:12 PM
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#38 | |
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Re: Damaged piston (VFR400)
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Could someone be so kind as to explain what the sprag does? thanks  Dave |
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14-12-09, 08:13 PM
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#39 |
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Noisy Git
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Re: Damaged piston (VFR400)
One way clutch, it allows the starter to drive the engine over when the starter is spinning faster, but releases when the engine spins faster.
Full name is a sprag clutch. If they go pop then when you press the button the starter motor will whir without cranking the engine. Some bikes can have issues with them if you let the battery get low and they kick back.
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Now rebuilding a 63' fishing trawler as a dive boat Last edited by yorkie_chris; 14-12-09 at 08:15 PM. |
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14-12-09, 08:21 PM
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#40 |
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Re: Damaged piston (VFR400)
Ah that does sound like the problem.
It does sound like my problem. It is like the starter motor is going but not engaging with anything. |
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