749 Biposto Tickover 2
 

When I first got the 749 at the end of August you lovely people told me how th adjust the tickover up so that it didn't keep stalling.
I took it for it's first service and the garage turned it back down a bit.
As the weather turned cold the bike would keep stalling again at juctions etc.
So I've had the bung out of the airbox to turn it up again. I can get it to tickover at about 2000rpm for a few seconds and then it drops down to just over a 1000rpm again. No matter how much I turn the tickover screw I can't get it to maintain a tickover as high as when I first adjusted it (1500rpm). It isn't stalling as much but it is ****ing me off to the extent that if I can't sort it and I ride another V-Twin thats nearly as good I might get rid. Or even go back to a jap four. Any Ideas, I just don't tolerate machines that don't run properly and I don't see why I should have to waste money on bullshit power commanders and things on a standard bike.

Take it back to the garage and get them to adjust the tick-over.

mine cuts out on tick-over now and again,I've just fitted a Termi exhaust and on the first ride with it fitted it must have cut out 5 times, but yesterday not at all:roll:

see if it settles down if not take it back.
the problem with setting the tick-over you have to set the potentiometer as well.:puzzled:

Agreed - get the garage to do it. Mine started doing it a bit again after having Termis fitted, but it has settled a little. I'll be asking my dealer to check it over next time it goes in.

Spank

I have been having trouble with the 749R mine has been cutting out at slow speed (filtering for example). I complained directly to Ducati who have agreed to re-set the fueling (CO2 between cyclinders e.t.c.), this has been done twice now and it still happens :rolleye:

Something strange is that most occassions i pull the clutch in and it fires up but on at least two occassions I have had to coast to a stop put her in neutral and then fire her up.

Mine I am guessing is something more than just set up and I will be contacting the dealer again today (the dealer has been great by the way "Woods").

Being a control sysems engineer I would luv to know what processor Ducati use and the cycle times they are using for the software because I personally think this could be a more software/hardware problem.

Also a point of note, I am aware the datatool 3 alarms can cause problems if not mounted correctly (vibration) resulting in what appears like early activation of the rev limiter.

My bike use's the meta alarm.

Regards

DaveO

Stalling on the 749 has been a common topic on this board. Mine suffered the same way, with the bike regularly stalling as I was about to pull out into traffic. It CAN be adjusted though, most get done on first service (600 mile) when it's all loosened up. I was told that the CO filters needed replacing on the setup equipment, but there would be a variety of reasons. I think it is more ot do with the balancing between the cylinders to be honest. Idle speed on my bike has always been just under 1500 rpm.

[Edited on 17-10-2005 by HW]

The butterfly balance between the cylinders is important as is the Co,
If the butterflys are out the bike will sound a bit like a mono just off tick-over as the first cylinder picks up. The tick-over on mine has always been about 1200rpm

Mine has been in and out of he dealers, doing the same thing. It is still there....for the foreseable future anyway!

try this which is lifted from the moto-one website in australia - tones of great info - the table of valve specs has not come up right but if you do a search you will find it.
Testastretta:

CAM
PAIRING
INLET
OPEN
INLET
CL
EXH
OPEN
EXH
CL
DURATION
CENTRELINE
MAX LIFT
STD VALVES

IN
EXH
INLET
EXH
IN
EXH
INLET
EXH

749
15
46
53
11
241
244
105.5
111
10.1
9.1
37
30.5

749S '04
23
55
62
24
258
266
106
109
11.4
10.21
38
30.5

REVISED
21
57
66
20
258
266
108
113
11.4
10.21



749R
21
53
60
20
254
260
106
110
13
11.5
39.5
32

998
4
56
53
11
240
244
116
111
10.15
9.1
40
33

998S
16
60
60
18
256
258
112
111
11.71
10.13
40
33


“REVISED” refers to the revised cam timing specs for 749S ’04 models as detailed in service information re: stalling at idle. Simply changing the centreline settings for the cams to reduce overlap. It amazes me that such a small change in timing can have such a pronounced effect on how the bikes idle (probably part of the reason why my 851 idles so badly).
These ’04 749S cams are the longest duration of any of the Testastretta cams.
998 refers to base model 998 and 999. Not the ’05 999 though afaik.
‘998S’ refers to the Euro spec 998S. The USA spec 998S has the base model 998 engine. These cams are also fitted to the 996R, 998R, 999S (both Euro and USA) and the ’03 999R. Not sure about the ’05 999R yet. The ’05 999 has these cams I believe.
The 749 and 749S share the same valve spacing, which is different to the 998/999 valve spacing. I believe the ’05 999R may also have unique valve spacing, as does the 749R. Therefore the cams do not swap.

Ah the garage said they had to adjust/check the valves on the first service, so this could be why the tickover went back to being low. It does tickover at about 2000rpm when cold but as soon as it's warm it goes down to about 1200rpm. It only cuts out about once every other ride, I suppose if nothing else goes wrong I learn to live with it as it's such an awsome bike. It's bog standard by the way and it hasn't even got an alarm thats whats so annoying.

Ps : Thanks for putting up with my whinging, helpful people like you make owning a Ducati a pleasure as your more enthusiastic and knowledgeable than most owners of other types of bike. It's a privelige to be in your club.