12425 - Established June, 2013 - all GRiSO, all the time...
 
HomeFAQRegisterLog in
Share | 
 

 Moto guzzi GRiSO 1100 non start

View previous topic View next topic Go down 
AuthorMessage
CBH
Montanarolo
Montanarolo
avatar

Posts : 23
Join date : 2015-03-17

PostSubject: Moto guzzi GRiSO 1100 non start   Sat Feb 25, 2017 6:01 am

Over the winter
I have taken the battery off of my bike and trickle charged it.
I've recently put the battery back on the bike however it now won't start.
Basics have been checked like the fuses which are all ok.
We have tried with a jump pack also, but the starter doesnt even spin. You can hear the starter relay engage but nothing is happening.
We have power at the relay and to the starter. Should we have 2 feeds from the ignition switch when operated? Can you short the relay across 2 terminals to eliminate whether there is a fault with the ignition switch if so which points need to be shorted? The starter has been removed and tested on a work bench to ensure it spins and engages.
We have fitted a new relay just as a precaution however the same fault still occurs.
All earth points are good as is wiring and continuity.
Has anyone had a similar issue or does anyone have any other ideas as to what to try?
Back to top Go down
Pete Roper
GRiSO
GRiSO
avatar

Posts : 4525
Join date : 2013-05-29
Age : 60

PostSubject: Re: Moto guzzi GRiSO 1100 non start   Sat Feb 25, 2017 8:30 am

Sounds like the classic 'Startus Interuptus' issue. Run a direct, fused, feed from the battery positive to the delivery side of the relay, I believe it's the yellow wire.

Pete
Back to top Go down
CBH
Montanarolo
Montanarolo
avatar

Posts : 23
Join date : 2015-03-17

PostSubject: Re: Moto guzzi GRiSO 1100 non start   Sat Feb 25, 2017 12:36 pm

Thanks Pete
I'll try your suggestion.
Had problems in the past but have always managed to get it going eventually.
This time it's doing my head in
Back to top Go down
CBH
Montanarolo
Montanarolo
avatar

Posts : 23
Join date : 2015-03-17

PostSubject: Re: Moto guzzi GRiSO 1100 non start   Sat Feb 25, 2017 12:52 pm

Sorry Pete
One more question (sorry if it sounds stupid ) what size fuse?
Back to top Go down
waterbottle
GRiSO
GRiSO
avatar

Posts : 1362
Join date : 2015-02-02
Age : 56

PostSubject: Re: Moto guzzi GRiSO 1100 non start   Sat Feb 25, 2017 1:09 pm

From memory a 15 amp fuse is sufficient
Back to top Go down
CBH
Montanarolo
Montanarolo
avatar

Posts : 23
Join date : 2015-03-17

PostSubject: Re: Moto guzzi GRiSO 1100 non start   Sat Feb 25, 2017 1:17 pm

Many Thanks
Back to top Go down
Guzzi Cat
Biondino
Biondino
avatar

Posts : 228
Join date : 2014-09-02

PostSubject: Re: Moto guzzi GRiSO 1100 non start   Sat Feb 25, 2017 1:24 pm

Hi CBH, A 15 amp is good and is what I have fitted.

[You must be registered and logged in to see this image.][You must be registered and logged in to see this image.]" />

Disconnect the yellow wire from the starter relay and tape it up, then connect the fused wire direct from the battery to where the yellow was connected to the relay.

[You must be registered and logged in to see this image.]

Hope the pictures help.
Back to top Go down
CBH
Montanarolo
Montanarolo
avatar

Posts : 23
Join date : 2015-03-17

PostSubject: Re: Moto guzzi GRiSO 1100 non start   Sat Feb 25, 2017 1:48 pm

Fantastic Guzzi Cat.
Many thanks
Back to top Go down
avgpetro
Tanabuso
Tanabuso
avatar

Posts : 53
Join date : 2016-11-26
Age : 49

PostSubject: Re: Moto guzzi GRiSO 1100 non start   Sat Feb 25, 2017 2:06 pm

A good habbit is to always look at the voltage reading on the dashboard when you press the start button, and keep looking it untill the engine starts.

Supposing that when you press the start button, you hear the starter relay, and the voltage reading remains stable, above 12v, then its your starter solenoid does not close - the "startus interaptus"

Lately (over a year) that the same happens to me, I got away with it by cleaning the spade connector of the solenoid relay - the one thats on the starter, where the thin cable is attached, covered by a rubber cup.
Its the first thing to do - the cheapest and easiest.

Other than (and before) that - I have relocated the connections of the earth (ground) cables. I've connected the thick one, the one thats conected to the battery, to the right side of the engine and bolted it with one of the bolts that conects the engine to the gearbox. I bolted the other 2 thin ones, that are bundled with the oxygen sensor cable, on a bolt on the frame, a little above the left footrest plate. Those cables need to be connected real tight and when tried to tighten the thin aluminum screw that they were originaly fastened on, I've cut it.

The couse of the problem is that due to poor conections and thin cables (edit: and undersized relay), resistance is indused in the electric circut, so when current is drawn, the voltage drops enough for the solenoid not been able to close.

I think that for the 1100 at least, the solution is this:

[You must be registered and logged in to see this link.]
okuraner wrote:
Voila! It worked. As Pete wrote, I cleaned all terminals, sockets, earth strap but unfortunately it did not start. Then, through searchin internet, by chance I found "Allegato M-605" which is Moto Guzzi Technical Training February 2010. This 59 pages file is real life saver. On page 52, there is a section with head line "Problem solving course Sheet No:20 Starting Failure Applicability : All models.
I copied and paste the solution : "CAUSE: Insufficient cross section of the +12V wire energising the starter relay.
SOLUTION:
a) Identify the starter relay (orange/yellow, yellow, brown/pink and red/black cables)
b) Remove the relay and detach the Faston connector from orange/yellow cable, pushing
the tab down with a pin.
c) Prepare the additional length of cable (cross section 2.5mm2, as long as necessary)
d) Fit the Faston connector with the tab on the relay connector instead of the orange/yellow
cable.
e) Insulate the Faston connector from the previously disconnected orange/yellow cable.
f) Disconnect the Faston connector from the starter motor and fasten to the wiring harness
with a clamp to prevent it from dropping onto the silencer.
g) Connect the Faston on the additional cable in place of the old Faston connector.
h) Fasten the additional cable with the same clamp used to secure the starter cables"

It really worked. Now I wonder what are electrical engineers in Moto Guzzi doing all day long. Why don't they produce problem free motoryles.


So far, I've avoided runnig a new cable, changing the ground connections helped to reduse the resistance enough for the problem to appear only when the spade connector gets a bit loose/dirty/moist.
Back to top Go down
CBH
Montanarolo
Montanarolo
avatar

Posts : 23
Join date : 2015-03-17

PostSubject: Re: Moto guzzi GRiSO 1100 non start   Sat Feb 25, 2017 2:35 pm

Many Thanks Petros and everyone else who responded. Hopefully next week when I get a chance to have another go at starting I'll have good news to report.
Back to top Go down
CBH
Montanarolo
Montanarolo
avatar

Posts : 23
Join date : 2015-03-17

PostSubject: Re: Moto guzzi GRiSO 1100 non start   Thu Mar 09, 2017 4:24 am

Thank you everybody. Up and running. Ran a direct, fused, feed from the battery positive to the delivery side of the relay. Delay replying due to heavy cold
Back to top Go down
 
Moto guzzi GRiSO 1100 non start
View previous topic View next topic Back to top 
Page 1 of 1

Permissions in this forum:You cannot reply to topics in this forum
GRiSO ghetto :: The Ghetto :: GRiSOLOGY-
Jump to: