GRiSO 1100 will not start

Grignapoco Posts : 105 Join date : 2020-09-08 Age : 64

Hello chaps not great with the electrics so
GRiSO has been getting harder to start now not starting at all -just depletes the battery
battery voltage is disappearing on cranking even when jumping with a car battery and still no start
have cleaned all the battery and the earth connections on the starter
any ideas?
TIA Steve

Don Abbondio Posts : 143 Join date : 2014-08-26

Need new battery

GRiSO Capo Posts : 1470 Join date : 2016-01-25 Age : 69

Voulga may be rigth if your battery is more than 5yr old it is probably weak and suspect, however loose battery terminals (and particularly either end of the earth wire) can lose you a volt and much more when the starter tries to draw it's massive current.

So clean vaseline and tighten all battery terminals (including the one on the starter) and both ends of the earth cable or cables.

When battery voltage falls below 8-10v whilst the starter is spinning it all happens too slow and the sparks are weak so it will spin (slowly) for longer and longer. The voltmeter in the dash is a guide but not accurate the voltage at the battery will be different especially when starting

Grignapoco Posts : 105 Join date : 2020-09-08 Age : 64

I have just started my beull with the GRiSO battery not sure its a duff battery

Grignapoco Posts : 105 Join date : 2020-09-08 Age : 64

dash goes goes out too

Grignapoco Posts : 105 Join date : 2020-09-08 Age : 64

Jon I have cleaned terminals and the earth point on starter
battery is 11 months old

GRiSO Capo Posts : 1470 Join date : 2016-01-25 Age : 69

Good test

then my money is on
1) all the terminals of the main earth & power leads need to ber clean and tight- problem there would explain the voltage dropping so far it blanks the dash (if you can't find the other end of your earth lead - run another one to test it - they are cheap from Halfrauds)

If the reason for low battery voltage is lengthy starting - it could still be
2) corrosion or loose spade terminal connection to the solenoid (behind the starter cover on te left)
3) corrosion or loose wiring terminals to and from the starter relay (right side bodywork)

GRiSO Capo Posts : 1470 Join date : 2016-01-25 Age : 69

loose or corroded earth lead terminals is always the No 1 reason for poor charging and poor starting

Grignapoco Posts : 105 Join date : 2020-09-08 Age : 64

Did the terminals on starter
will check the relays which ones are they I see 4 on the right
Thanks Steve

GRiSO Capo Posts : 1470 Join date : 2016-01-25 Age : 69

i would recommend checking both ends of the battery earth and other battery main terminals are tight and clean long before stripping off the bodywork to get to the start relay

The solenoid power (10-30a) then all the starter power has to go down the battery power lead & also back up the earth lead or it cannot start.
The draw of those components outweights anything else on the bike so continuity faults will first show up on starting and your observation of the dash going blank indicates that the whole system voltage is dropping whilst it tries to start.

As regards the relays the 1200 is different - it has 2 relays !

The 1100 wiring diagram is on this sight in the same folder as the manuals. Here [You must be registered and logged in to see this link.]

The relay is no 3 on that diagram - BtW safest to identify it by the wire colours rather than hoping Guzzi followed the drawing during assembly

Grignapoco Posts : 105 Join date : 2020-09-08 Age : 64

12 screws to get the bloomin seat cowl off 12 screws!!!!!!

Grignapoco Posts : 153 Join date : 2020-08-22 Age : 72

if the battery has not been charged for a long time, it will be empty.

Even an 11-month-old battery. It is not only the immobiliser that draws current.

That's why I have the Ctek charger with the charging light on all my bikes.

That way I don't have to remove any batteries. When the colour turns yellow (after about 4-5 weeks), I connect the charger to the charging light for a day.

This way the battery is always ready to go and has a very long life.

regards
Holger

Translated with [You must be registered and logged in to see this link.] (free version)

Grignapoco Posts : 105 Join date : 2020-09-08 Age : 64

battery has been charged
this starting issue has only happened over the last week or so

GRiSO Capo Posts : 10712 Join date : 2013-05-29 Age : 67

What battery did you buy? Model number, not make.

Grignapoco Posts : 105 Join date : 2020-09-08 Age : 64

YTX20CH BS
The correct one I believe
Steve

Fra Cristoforo Posts : 828 Join date : 2016-04-14

I would read the startus interuptus thread. I seen 1yr old dead Yuasa's. It only gives you 18ah if your lucky. Run a wire from start solenoid & touch + on battery It should crank, bypass all the crap. If no crank or slow your batt is junk.
Oh yea make sure it's in neutral cause it'll crank whether the key is on or not with that wire.

GRiSO Capo Posts : 1470 Join date : 2016-01-25 Age : 69

GuzziSteve wrote:: I would read the startus interruptus thread. I seen 1yr old dead Yuasa's. It only gives you 18ah if your lucky. Run a wire from start solenoid & touch + on battery It should crank, bypass all the crap...

If the bike starts fine with this wire then the problem is in the starter relay or the feed to it.

And as GuzziSteve said if it does not start fine when this jumper cable is used, the problem is in the battery circuit - resistance in loose or corroded terminals can lose you 1 to 3 volts and that is enough to make a good battery bad.

GRiSO Capo Posts : 498 Join date : 2016-05-14

Is likely starter interruptus as described above, or you have a bad main ground as stated above.

I know you checked the power lead to the starter and battery terminals, but have you checked all the grounds to the frame? Trace the negative cable to where it attaches to the frame, remove the screw/bolt, clean up and re-attach.

GRiSO Capo Posts : 740 Join date : 2019-08-17 Age : 70

Don't check voltage and assume you have amperage. A battery with good volts can have an open when put under load, as can any other connection.

Quick test: turn on key and go through your menu to volt meter. Hit the starter button. Does voltage drop a lot, and perhaps even go to "0" and stay there? Sudden Battery Failure (SBF).

Don Abbondio Posts : 6086 Join date : 2014-03-13 Age : 69

Steve as noted, the battery starts your Buell. I would bet the main earth point (on the stud behind the starter cover, is suspect. Many of us have moved it to one of the clutch housing bolts, just above where it currently is. The original earth point is suspect on a good day. Move it.

GRiSO Capo Posts : 640 Join date : 2018-10-04 Age : 61

GuzziSteve wrote:: I would read the startus interuptus thread. I seen 1yr old dead Yuasa's. It only gives you 18ah if your lucky. Run a wire from start solenoid & touch + on battery It should crank, bypass all the crap. If no crank or slow your batt is junk.
Oh yea make sure it's in neutral cause it'll crank whether the key is on or not with that wire.

Had exactly the same problem with a one year old Yuasa battery. Did what GuzziSteve explain. Found that the battery was dead. Bought a new battery and since then no more problem.

I have no idea why a one year old battery failed in such a short period. Rolling Eyes

Grignapoco Posts : 153 Join date : 2020-08-22 Age : 72

hence my hint...even a battery that is only 1 year young and is not recharged monthly will quickly break down and become deeply discharged.

Grignapoco Posts : 105 Join date : 2020-09-08 Age : 64

Good morning
ran a wire from the starter solenoid to battery + even with the suspect battey it cranks too slow to start but I think I am on the right track
new battery incoming
Thanks for all the help so far

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