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Old 17-07-2020, 07:03 PM   #61
Mr Gazza
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Sounds like the only way to adjust the tickover is via the TPS (throttle position sensor).
This lives on the left hand side of the the throttle bodies, it's a round plastic object with two screws. I'm not sure if it can be manually adjusted with the screws or if it has to be electronically adjusted, hence the mathesis tester.
I have heard that physically adjusting it is incredibly hard and that wouldn't be something I would attempt on my own bike!

So am I going to miss the boat (or bike) with the cover puller?
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Old 17-07-2020, 08:15 PM   #62
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The TPS affects tickover but there are a couple of other things to check.
Enrichener cable routing can cause an issue on those models and can hold the quadrant in fast-idle position. This will likely show itself as the engine revving as the bars are turned side to side

Make sure the throttle stop screw (1) isn't holding the quadrant in an open position.
Also check the same thing for the master throttle adjuster (2).
If you haven't messed with it the balance screw (3) should still be in the right place.

The factory manual recommends setting the air bypass screws (10) right in and turning them out until you get 1000-1100 rpm tickover (approx 1 full turn out)


Last edited by slob; 17-07-2020 at 08:18 PM..
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Old 17-07-2020, 08:19 PM   #63
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jpdiag is your friend if you don't have a mathesis tester

also any air leak between the throttle bodies and engine will cause the engine to run lean and idle too fast.

Last edited by slob; 17-07-2020 at 10:28 PM..
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Old 19-07-2020, 10:50 AM   #64
Darren69
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Is it a 620ie with a non-linear TPS? If it is then do NOT TPS reset through the diagnostic software or you'll be looking to buy a new one. Read this: -

http://www.bikeboy.org/ducati2vthrottleb.html
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