Ducati Sporting Club UK > DesmoDue Race Series > DesmoDue - General Questions and Chat > For Ghosty / Kev / anyone DD Mechanic. question

[Ghost]

Originally Posted by Gbyte666

OK, I swapped over the coils/igniters, Same runs freely on the rear on it own, but not without a bit of revs on the front on its own.
Front header pipe did seem a little hotter ( maybe my imagination ) but still no where near making water boil on contact like the rear one does.

Craig

Mmm, if you have a meter to measure the pickup coils resistance ought to be 95 to 105 Ohms.

Just to check if its fuel with the air filter out put some fuel in a houshold spray bottle, then whilst its running mist some fuel straight into the throat of the front cylinder carb and see if it makes that cylinder run.

[Gbyte666]

Thx again Phil.. I'll measure the resistance now.
Have to empty the Mrs washing liqid somewhere and put some petrol in it. lol
Errr are the pickup coils the two black things with what looks like a solid fuse in the top of each one or the black box's either side with two white connectors into each ? Lol

Craig

[Gbyte666]

Hmm asumming on on the right thing, going against the two connectors on the black bakelite jobys I get about 7ohms on both of them.
I'll upload a pic to make sure im accoss the right thing.

Craig

[Gbyte666]

Sprayed mist of fuel into the top of the carb, no joy. Here is a pic of what I am mesuring at 7 ohms on a digital meter.

[Gbyte666]

Measre this as well, Gives between 115 ohms both sides, turn it over and it changes each time but stays same both sides between 105 ohms and 115ohms.
When I first messured it the gear side gave 130 ohms and the rear brake side gave somthing stupidy high. Untangeled the wires and it gives constant now both sides at 105 ohms but still not heatingup that front pipe out of the header or running on the front on it own on idle.

[Ghost]

OK Craig your first two black things are the ignition coils, across those two terminals you are checking the primary resistance, slightly high, but not enough to be your problem. The last pic are the wires that come from the pickup coils, they look in spec also.

So the misting of fuel has it been tried yet??

Just remembered, did you say at Mallory you had a belt jump? If so compression check is needed and check those belt timings again.

[bradders]

Hit it with the big hammer Craig

[Gbyte666]

Thanks again Phil, Yea I did try the misting in that I was spraying fuel into the top of the carb, and yea I had it slip a tooth at Mallory.
Ok its now at a point where its beyond me to continue as I dont have a compression gauge or how to use one.

I'll have to call my mechanic( Skids ) after Snett.

Thanks for your help Phil.

See you at Pembry hopefully

Craig

[Gbyte666]

The SAGA part lost count::::::::

Ok so its not the fecking pick-up coils. Replaced them, re did the timing fired it up, same F&%k C%$££ &**** Arghhhhhhhh

Right front head off.....



Ahhhh that could be the problem, makes sence as its by the fuel valve and it would'nt tick over on that pot but would go with revs.



Anyway Bradders has lent me his head, but I need to swap over the pulley from my old one to the spare head. I have'nt got the tool to undo centre bolt ??

Old Head:





Spare Head:



Sod it I'll take it to my local (Probike) and get them to swap it over for me.

Here is the spare kindly lent by Bradders that will go on in its place. Looking much healther than mine.



Kev (Skids ) dose this look like the cause of the problem I was having ???

So fingers crossed this time I might have a working pot by tomorrow afternoon.

I've got to be ahead of you now Bradders on the take it appart and guess & learn front.

If not I'm setting fire to the fecking thing.

Craig