Hi wondering if anyone can help. I’ve just Changed the belts in my Multistrader 1200 s 2017 it now seems a lot less responsive in the throttle as if the timing is out, I’ve had the covers back off again and everything lines up when on TDC on horizontal cylinder . I also removed both cam covers to check the flats on the cams and they are perfectly aligned the things that’s throwing me off is I’ve read somewhere there is supposed to be 22 belt teeth between timing marks on the cams when on TDC, I have 22 in the rear cylinder but I have 23 on the horizontal however all timing marks still line up and if I move either cam on the front cyclinder to give me 22 teeth it puts the timing marks off. can anyone tell me what’s going on here highly appreciated if you can
Yes exactly the same when I counted, ive also double checked belt part number with Moto Rapido where I bought them from and the part number is correct
If you can get access to a Ducati software etc you can look at the DVT cam timing on that to make sure they are all correct…. the 1200 dvt cam belt change is a bit more in depth that just a regular belt change… did you use the crank lock tool with H cyl at tdc?
I’m not sure what you mean both front and rear should be the same as far as I’m aware I’ll see what I can get hold of tomorrow, I’ve changed loads of belts on the Dt’s and never had an issue until now
On the DVT motors, the timing mark on the lower, driven pulley, does not align exactly with the mark in the clutch cover at horizontal TDC at the correct point to do the timing. Depending on the motor being either 1200 or 1260, it will sit around 1tooth to the left or the right. It will only be in the correct place every 24 or so engine revolutions. I can’t recall the exact number, but this can be seen if you rotate the crank twice…. The timing mark will be no where near. The marks on the cam pulleys are a visual guide. Pretty accurate but not 100%. I have never heard of or know how many teeth there should be between the pulleys but would assume they would both be the same on both cylinders. The difference in belt teeth you have is likely to be down to the lower pulley not being in exactly the right place, you aligning the marks on the cams and the belts are having to compensate slightly by hooking up over an unequal length, hence the 1 tooth difference. You usually get an eobd light if the timing is out but not always. The cam position sensors are getting conflicting data, the ECU will simply not swing the cam timing hence poor performance. As Andy mentions, you can view this info with a diagnostic tool, but it’ll need to be workshop level. To get the timing correct, you’ll need cam locking tools, the locking tool for the crank and the check tool to make sure the motor is in the right timing position. You can of course try and refit manually, but there’s a risk. Once there has been movement, especially in the crank, you’re guessing and things will go down hill from there….
