my 749 is running like a bag of frogs!!

**razdaz749** · 16 Aug 08, 11:26 AM

hi all, this morn i managed to get out on the 749 haveing not ridden it in a month, the things glugging and wont pull at low revs and got worse as the journey went along, i stopped for fuel thinking it may have been low .....but it was the same, so not wanting to get stranded i came back home . any ideas where to start would be a great help....thanks Daz

**biscuitandpotato** · 16 Aug 08, 11:50 AM

sounds a bit like an ignition coil? is it an early model? mine is and both have now been replaced with the new coils.

**razdaz749** · 16 Aug 08, 02:45 PM

the bike is 2003 and done 5.5k , its allways had a little missfire when comeing to a halt but never done this before , could it be that its been stood for a while??? hhmmmm oh joy!

**biscuitandpotato** · 16 Aug 08, 03:06 PM

03 ones were well known for it, a simple job to fix, its basically the spark plug caps, down side is they aint cheap, so get it checked to make sure first.

**razdaz749** · 16 Aug 08, 04:19 PM

if it was these , could i do it my self and where would i get them from?? how much ?? and how do you find out if it is these that are at fault, also my local duca dealer is 25 miles away ...can i risk the journey??

**biscuitandpotato** · 16 Aug 08, 04:38 PM

its fairly easy, fairings and tank off, then they are just the plug cap with a connector block. As far as diagnosing them for defo i dont know, easiest if someone near you could borrow you theirs to try? TBH it would be best to nip it to speacialist or dealer to make sure. could always go down the second hand route, couple of Ducati breakers on ebay.

**andyrh** · 16 Aug 08, 04:48 PM

But if it was a coil that had packed up that the bike would be running on one cylinder, where as the description of the fault sounds like it is affecting both pots

**murf62** · 16 Aug 08, 06:09 PM

If it is the coils, you can change teh vertical one without removing the tank. Just unbolt the tank/seat as a complete unit, lift it up and prop it up with something. I use a cardboard box about 150mm high, vust under the back of the tank. Saves disturbing the fuel connections any more than necessary and potentially damaging an o-ring.

**razdaz749** · 16 Aug 08, 06:59 PM

i have just had the plugs out and cleaned them, checked all the conectors and made sure nothing was trapped under the tank...............had a run out and.............alls well again so me a happy bunny!! it may be an intermittent fault but lets hope its sorted, thankyou all for pointing me in the rite direction! cheers daz

**razdaz749** · 16 Aug 08, 09:37 PM

am i rite in thinking theres an upgrade for the plug caps\coils ?

**moto748** · 16 Aug 08, 11:54 PM

Yes. The later type of coils seem to be fine, but they're not cheap; around 80 quid each IIRC.

**murf62** · 17 Aug 08, 06:40 AM

I got a pair off Ebay for £25. Bargain

**Duke of Stow** · 18 Aug 08, 02:10 PM

Hi, I had a similar problem with my 749 that turned out to be water in the front cylinder spark plug tube. Cleaned it out and put a wipe of grease around the coil top, problem solved. Worth a try.

~Duke~

**Matty** · 25 Aug 08, 10:32 AM

I was going to mention fuel.
I recently took my blade off the road and stored all the fairings and tank etc in my spare bedroom.
This sat there for a month or so with a full tank of fuel.
I decided not to waste the fuel and used it in the duke, after 10 miles or so the duke began to run really poorly, fluffy at bottom end, and not pulling cleanly at all, neadless to say after filling the tank to the brim with super unleaded all began to very slowly get back to usual, untill after a full re fill with new and all was sorted.
Just thought i would mention this.

Also, on the coil front, i had a problem with my early model horizontal coil (error code 10.2) and after much frustration, new plugs, and eventually a new coil, not cheap! I found the problem to be the male section of the connector that goes into the coil itself, not the coil, there fore without buying a whole new loom, the only other thing i could do, was either splice a new weather proof three pin connector onto both the loom, and the old or new coil, or hard wire the new or old coil into the loom.
I decided to do the latter, so now have no connector on the front coil, and a spare for later.

Just thought i would let you know my coil troubles!

**Ghost** · 25 Aug 08, 11:00 AM

Quote:

Originally Posted by Matty

Just thought i would let you know my coil troubles!

An old lady friend of mine had coil troubles also.

Pass me coat.