Subject: GRiSO 1100 no start Fri Jul 14, 2023 7:17 am
Took my GRiSO 1100 apart to fix an oil leak. While in there, I changed the alternator belt, all 4 plugs and new wires, changed the oring on the timing sensor.
Put it all back together, start the bike and I sounds like it's running on one cylinder. Headlight flashing and it will not idle.
Finally able to give some throttle and it sounds like it learned up. Let go of the throttle and bike dies.
Now all I get is a loud thunk when I hit the start button and dash goes blank.
Bike does have the MPH startus interuptus kit. Battery load tested good.
Had to change the sump and spacer gaskets. Put in 3 liters of oil.
Did notice some oil in the airbox... oil level is between low and full.
Just fishing for where to start looking as I cool off.
JohnA GRiSO Capo
Posts : 762 Join date : 2015-01-13 Age : 67
Subject: Re: GRiSO 1100 no start Fri Jul 14, 2023 11:46 am
I’m clearly not one of the experts, who will hopefully come along soon. But, if it was me, I’d be checking the leads to all the plugs & caps etc. and everything you did there. Seems like that would be the only thing from your list of repairs that could cause those symptoms.
Give both the battery terminals and the cable connectors that bolt to them a really good wire brushing, clean and coat them with Vaseline and try again.
Last edited by Pete Roper on Fri Jul 14, 2023 4:00 pm; edited 1 time in total
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orngm2 Tanabuso
Posts : 61 Join date : 2019-01-30
Subject: Re: GRiSO 1100 no start Sat Jul 15, 2023 3:41 am
replaced the oring on the phase sensor with one that would lay in the channel like the original. Got the bike to start and idle! Responded to throttle well and went back to idle like normal.
As the bike is idling, it momentarily wants to cut out and start again.
The idle will go up for a second and back to normal.
Even when it starts it has difficulty starting, the bike used to catch and idle immediately.
Could my phase sensor be on the way out?
beetle GRiSO Capo
Posts : 10178 Join date : 2013-09-30
Subject: Re: GRiSO 1100 no start Sat Jul 15, 2023 5:39 am
Possibly. Positioning is critical, however. The distance from the sensor to the phonic wheel needs to be 0.5mm - 0.7mm. If the second o-ring is even marginally larger, there could be issues. You might need to check the air gap.
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orngm2 Tanabuso
Posts : 61 Join date : 2019-01-30
Subject: Re: GRiSO 1100 no start Sat Jul 15, 2023 6:11 am
So here is where I am. Bike starts idles... If I give it throttle and let it come back to idle, it sometimes cuts out for have a second and the headlight goes out every time. The dash never blanks out. Then it catches again and idles nice. Never happens when given throttle. Only when coming back to idle.
orngm2 Tanabuso
Posts : 61 Join date : 2019-01-30
Subject: Re: GRiSO 1100 no start Sat Aug 05, 2023 12:15 pm
In case anyone cares... My timing sensor was removed to fix a leak and was reassembled as it was.
That's when my problems started. Removed the thinnest of the 3 shims used on the sensor.
Problem GONE!
Starts easy. stepper motor works, no stalls on 30 min ride. Idles perfect.
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Chris W Sfregiato
Posts : 403 Join date : 2019-12-05 Age : 56
Subject: Re: GRiSO 1100 no start Sat Aug 05, 2023 5:06 pm
YES! glad you're back on the road!
Pete Roper GRiSO Capo
Posts : 10658 Join date : 2013-05-29 Age : 67
Subject: Re: GRiSO 1100 no start Sat Aug 05, 2023 5:07 pm
Excellent
tinker Tanabuso
Posts : 92 Join date : 2023-04-26
Subject: Re: GRiSO 1100 no start Sun Aug 06, 2023 1:16 am
Great news I have a similar issue but mine isn’t stalling just a bit of random tickover every now and again. So not sure if it is a stepper issue or the crank position sensor, which I have just swapped but checked the length and it is the same as the old one. And I correct in thinking you can test the stepper in Guzzidiag? Is there a way to check the crank position sensor in Guzzidiag? Thanks