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 GRiSO 850 intermittent start

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marktjoliver
Montanarolo
Montanarolo


Posts : 21
Join date : 2015-07-16
Age : 52

PostSubject: GRiSO 850 intermittent start   Sun Jan 17, 2016 8:01 am

Hello all, My 850 GRiSO is not behaving I bought a new battery to eliminate this item but the fault still exists.this is an intermittent issue and sometimes the bike will start perfectly. 12.5volts measured at battery and at starter motor.
When I press the start button I can hear a clonk at the starter motor and then another clonk when I release the starter button. Any advice would be good before I pull the starter motor off and test on the bench.
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Pete Roper
GRiSO
GRiSO


Posts : 3783
Join date : 2013-05-29
Age : 59

PostSubject: Re: GRiSO 850 intermittent start   Sun Jan 17, 2016 12:25 pm

Sounds like the classic 'Startus Interuptus' or poor earthing. When it goes 'Clonk' does the dash go blank?

Pete
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marktjoliver
Montanarolo
Montanarolo


Posts : 21
Join date : 2015-07-16
Age : 52

PostSubject: Re: GRiSO 850 intermittent start   Mon Jan 18, 2016 10:46 am

no blank on the display. Will check out the earthing tonight thx mark
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marktjoliver
Montanarolo
Montanarolo


Posts : 21
Join date : 2015-07-16
Age : 52

PostSubject: Re: GRiSO 850 intermittent start   Mon Jan 18, 2016 1:44 pm

Ok, earth checked 0 ohms on meter and cable looks in ok condition removed conection at stud near starter motor and cleaned cable ends and all ok.
Removed starter motor and noted top bolt thread gone in starter motor housing , possibly a bad earth here, so modified longer bolt and nut for a secure fitting. Tested now and still intermitant starting. Removed starter motor completely and set in vice on bench connected battery and tested perfectly every time.
Starter motor back in bike and still intermitant starting. Tested 12v from starter switch.
AAAAAAAAHHHHHHHHHHHhhhhhhhhhhhhhhhhhhh.
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Oz1200Guzzi
Don Abbondio
Don Abbondio


Posts : 1783
Join date : 2014-03-13
Age : 62

PostSubject: Re: GRiSO 850 intermittent start   Mon Jan 18, 2016 3:37 pm

there is a cure Mark, as Pete says. Often called "startus interruptus" and exhibits just as you say. search for it on this site for a cure.
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marktjoliver
Montanarolo
Montanarolo


Posts : 21
Join date : 2015-07-16
Age : 52

PostSubject: Re: GRiSO 850 intermittent start   Mon Jan 18, 2016 11:16 pm

Searching now, thx
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GRiSO 850 intermittent start
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