Broke down outside a Whore House- No Spark - Ducati.ms - The Ultimate Ducati Forum
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post #1 of 13 (permalink) Old May 19th, 2019, 6:39 am Thread Starter
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Broke down outside a Whore House- No Spark

Morning all,

thought i'd take the old girl for spin this morning, the first ride since she was laid up for winter. Started on the button and i headed out. The bike felt a bit odd, low on power and hiccupy. I jumped on the autobahn and not 2km later total lack of power, it would hold idle but not accept any throttle. Then dies completely outside this towns biggest den of ... pleasure?

Anyway, pushed the bike back to the Garage to investigate. Prior to being laid up i did valves, belts and fluids. So first thing i did in my paranoia was check the belts, all good. PHEW!

A bit about the bike: 1992 900SS with the motor and loom from a 2001 900 Monster with injection. All Stock apart from DP Map, K&N and slip-ons.

No Spark on either Cylinder

A quick search here and i checked and did the following.

Sidestand switch, bridged the blue and black cable - unbridged the pump wont prime and the starter wont spin

Measured 11.6 Volts at the Coils LT while the pump is priming

Ran a new earth to the ECU.Still no spark

Cleaned the 3 pin Rotational Pick-Up connector and measured the resistance across two pins 0,94 Ohm with my Multimeter set at 20K

Cant tell if the pump is still priming whilst the the starter is spinning.

Checked all the fuses. All good.

I do have an old laptop with GuzziDialog on it and the right Lonlec cable so could use this to help diagnose if it'll help.


All suggestions welcome. Personally i think Monica (the bike) is pissed at me. She hasnt been used much since i bought an 03 Mille-R last spring and the thing with the Whore house is to me a sign of her Jealousy!

1992 900SSie, Moto Guzzi V50 Monza, Vespa PX192
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post #2 of 13 (permalink) Old May 19th, 2019, 11:00 am
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say hello to the girls/

maybe this? https://www.ducati.ms/forums/44-mult...connector.html
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post #3 of 13 (permalink) Old May 19th, 2019, 2:00 pm
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Let me get this straight: The bike delivered you to a whorehouse and died, and you pushed it 2 km home with no rest stops anywhere ? Not ANYWHERE?🤔😂
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'96 Ducati SS900CR, '07 S4RS, '06 Busa, '77 Bonny,
'00 Superglide, '85 Sportster, '78 SR500
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post #4 of 13 (permalink) Old May 19th, 2019, 2:46 pm
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Well at least you had something to do while diagnosing the problem!
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'95 900 SS - one day a Café Racer!
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post #5 of 13 (permalink) Old May 19th, 2019, 7:09 pm
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Yea I can see that --Hey honey sorry I'm late but my bike died right in front of that whore house down the road and it took me 4 hours to push it back home----My wife would cry---BULL-SHIT rolflmfao

1991 Ducati 900ss, 1991 Ducati 907ie. 1978 Yamaha SR500, 1979 Yamaha RD400 Daytona Special, 1973 Truimph X-75, 1975 Triumph T-160, 1976 Triumph T140, BMW's too many to list
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post #6 of 13 (permalink) Old May 19th, 2019, 7:22 pm
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The OP didn't say anything about having a wife...and he is the one telling the story, so he includes whatever level of detail is pertinent.

2012 Multistrada S
1999 Cagiva Gran Canyon (stolen January 2019)
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post #7 of 13 (permalink) Old May 19th, 2019, 9:07 pm
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does the pump run for a couple of seconds when you turn the key on? if yes, that generally means ecu power and output power are ok.

if yes to the above, you need to find out if the pump/coils/injectors (same relay) have power while the engine is cranking. if not, it'll generally be a rotation sensor. i usually just put my ear against the tank.

know all wanker
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post #8 of 13 (permalink) Old May 20th, 2019, 10:53 am Thread Starter
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Just to reiterate as lots of forum members are focusing a little too closely on where i broke down and not why.

Motor spins

Fuel pump primes but i cant hear while cranking (which doent mean it isnt running, just that i have a loud bike and bad hearing - related?)

12V at the coils whilst the pump primes.

Sidestand switch disabled.


NO SPARK

and

PLUGs ARE DRY

so whatever cause that is whats up. I suspect the Crank Position sensor, so ordered a fiat one today for the princely sum of 20 Euros. With the money saved on buying it from Ducati i can return to the ... scene of the crime!

thanks again all

Chris

1992 900SSie, Moto Guzzi V50 Monza, Vespa PX192
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post #9 of 13 (permalink) Old May 20th, 2019, 11:45 am
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Who’ Focused on what here ? Already planning for another “breakdown “ !

'96 Ducati SS900CR, '07 S4RS, '06 Busa, '77 Bonny,
'00 Superglide, '85 Sportster, '78 SR500
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post #10 of 13 (permalink) Old May 21st, 2019, 6:11 am
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My SS used to need the top fuse given a good wiggling when it did this.

The fuse may be intact but it isn't necessarily passing enough current, as you can get low-level oxidation between the fuse and fuse-holder. It's also important that the fuse is completely flat with no twist in the blades, in order to get maximum contact area.
Of course, your SS has a different motor and loom, so this may not apply.
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