Ducati Monster Forum

Moto Board => Tech => Topic started by: MostroS2R on June 04, 2009, 08:46:12 PM

Title: Normal idle
Post by: MostroS2R on June 04, 2009, 08:46:12 PM
I find that my bike is idling a little low since I removed the canister.
Always idled around 1100 to 1200 after she's warmed up.
Now it's at 1000. Is this normal? It's a S2r800 with 8800km on the odo.
Title: Re: Normal idle
Post by: DarkStaR on June 04, 2009, 10:43:14 PM
Just  [moto] it.  [thumbsup]
Title: Re: Normal idle
Post by: Bun-bun on June 05, 2009, 05:43:45 AM
Mine idles a tad low as well. You (or the dealer) can reset the throttle position sensor(TPS) to bring the idle up if it displeases you, or is causing stalling problems.
Title: Re: Normal idle
Post by: Raux on June 05, 2009, 05:59:38 AM
did you seal of the intake plenums well? you could have a vacuum leak.
Title: Re: Normal idle
Post by: MostroS2R on June 05, 2009, 08:43:36 AM
Quote from: Raux on June 05, 2009, 05:59:38 AM
did you seal of the intake plenums well? you could have a vacuum leak.

Would there be any other symptoms?
Title: Re: Normal idle
Post by: Howie on June 05, 2009, 12:02:12 PM
If you want to see if you have an air leak where you plugged the plenums spray some oil (WD-40 will be fine) around the area while the bike is running and see if the idle changes.  No change, no problem.  Sometimes, removing the canister does cause a change in idle since the canister itself is a very small vacuum leak that you are eliminating.  If you want to raise the idle turn the air bleeds out equally a 1/8 inch at a time.  This will not affect TPS.
Title: Re: Normal idle
Post by: angler on June 05, 2009, 12:38:20 PM
Quote from: howie on June 05, 2009, 12:02:12 PM
If you want to see if you have an air leak where you plugged the plenums spray some oil (WD-40 will be fine) around the area while the bike is running and see if the idle changes.  No change, no problem.  Sometimes, removing the canister does cause a change in idle since the canister itself is a very small vacuum leak that you are eliminating.  If you want to raise the idle turn the air bleeds out equally a 1/8 inch at a time.  This will not affect TPS.

Less messy is propane.  If you have one of those torches for soldering plumbing fixtures just turn it on, but don't light it.  Point it at any potential vacuum leak. Idle will jump up if you have a vacuum leak. 
Title: Re: Normal idle
Post by: Howie on June 05, 2009, 08:14:38 PM
Quote from: angler on June 05, 2009, 12:38:20 PM
Less messy is propane.  If you have one of those torches for soldering plumbing fixtures just turn it on, but don't light it.  Point it at any potential vacuum leak. Idle will jump up if you have a vacuum leak. 

Propane works well, in fact, that is what I would use.  Since it is highly flammable I tend not to recommend it to people who I do not know.
Title: Re: Normal idle
Post by: JEDI PIMP on June 06, 2009, 11:06:59 AM
Quote from: howie on June 05, 2009, 12:02:12 PM
If you want to see if you have an air leak where you plugged the plenums spray some oil (WD-40 will be fine) around the area while the bike is running and see if the idle changes.  No change, no problem.  Sometimes, removing the canister does cause a change in idle since the canister itself is a very small vacuum leak that you are eliminating.  If you want to raise the idle turn the air bleeds out equally a 1/8 inch at a time.  This will not affect TPS.
Ive got the same issue. idle at 900-950 and stalls sometimes. Only happened after removal of the canister.

Anyway.... anyone have a pic of where to do the adjustment? im a visual learner [thumbsup]

alex
Title: Re: Normal idle
Post by: angler on June 06, 2009, 11:36:25 AM
Quote from: howie on June 05, 2009, 08:14:38 PM
Propane works well, in fact, that is what I would use.  Since it is highly flammable I tend not to recommend it to people who I do not know.

Good point.  However, the amount of propane coming out of a small hand torch is very small.  You would have to leave it on for hours to have any sort of explosion hazard.  Even if you trapped a fairly good size pocket under the tank or something, the worse thing it would do is go POP. YMMV......
Title: Re: Normal idle
Post by: JEDI PIMP on June 06, 2009, 12:01:27 PM
nevermind on the pic... yay search!