Ducati Monster Forum

So when recently I've been starting my it makes this sound like there's something dragging when I turn over the engine. It's like when I start it and turn the key as soon as the engine starts this weird noise happens and it sounds like a starter motor sticking. The throttle gets stuck and it sounds like some kind of component is running and sticking over the turn of the engine.  On top of that, my bike acts like it's not getting any fuel. It stalls now at stops, the needle on  the right is at its lowest while running which means its idling at 1 making my bike idle real low. As I ride it jerks like its trying to get fuel or some line is blocked. I know its fuel injected and there's no carbs, but my old honda used to do this when my fuel lines would get blocked. My bike has no power, its sluggish. Any thoughts, suggestions would be helpful

Thanks,

yours truly,

red roof

What year and model?

2004 620 monster

Does the sound go away once its started?

At low speeds is it bogging? Surging/bucking?

yeah the sound goes away, but it reminds me that somethings getting stuck which produces this sound. As for the other things I don't know what bogging is. It kinda surges as I throttle and acts like its not getting any gas, I noticed just recently that a black oil like substance coated the inside of the tail pipe. I put a injector clearner in the tank it ran fine for about a few days then it was back.

When was the last time the fuel filter was changed? NAPA #3032 is an inexpensive alternative to OEM and does a fine job. It even fits pretty snuggly into the clip inside the steel tank. The noise could be your fuel pump struggling.

 :D actually 2 people asked the same thing, and one guy said it was the either the fuel pump or fuel filter. So how hard is that to put in because everytime I take off that medal round thing with the little screws and rubber gasket on top of the tank I have a hard time getting the thing back on..my filter was changed like 2 years ago and I live in a dessert so go figure. I can cover my bike and still there's dessert dust on it.. I bet its the filter.. thanks   [thumbsup]

The filter is a piece of cake to change. It's in plain view, once you get the filler cap off. Two hose clamps and a clip that the filter sits in. That's all. The hardest part, as you've stated, is getting the filler cap and gasket back on.

I read on this other forum how this guy put duc tape around it to hold it in place then proceeded to take off the other parts and he got it back on easy. I saw my mechanic do it in 2 minutes a few years ago but he put WD 40 around it and just put it on like it was nothing.. go figure..it is a pain in the ass.

 8) So I changed the filter in about 14 minutes thanks to the trusty post about the duck tape which is a great help. Got the gold Napa for a small fee, found out my other made in Germany filter was from 2011.
 Rode it out and it started to still hesitate a little, after a while picked up in power. Still low idle  ??? any clues on what to turn  and where on the bike to set the idle at least above 1 instead of so low it causes bike to stall at lights..

cheers

red roof

Get some new spark plugs and also reset your TPS.

http://bikeboy.org/ducati2vthrottleb.html (http://bikeboy.org/ducati2vthrottleb.html)

Really not a difficult thing to do. You will need a milivolt meter. The hardest part is taking the airbox out. My '04 620 was idling rough and stalling too. TPS reset cleared things right up.

Or you could just follow the throttle cable down to the throttle cam and find the idle stop screw and give it a few turns to raise the idle. (I'm a little too much of a nerd for that approach but it'll work.)

Thanks rule.


A guy who worked on my bike back in 09 did the complete 12k tune up said that my throttle bodies on the bike were defective, he saw it was a factory mishap, unfortunetly..my warrently had run out, so I never really did anything about it. He told me to get another used set.  I believe after years of running this machine it hast gotten worse, I probably need to just get another throttle body for it.  I think this  is causing it to act like it's hesitating a little when I ride. I took it out in extreme heat on a highway and ran it today for about 20 minutes doing around 60-65. It had power and ran smooth, until I got slower and stopped at a red light, my idle was low and it was having a hard time about it that I had to hold the throttle up a little to keep it running.  My plugs are about 3 months old, about the TPS link you posted, it's good info and I'll prorbaly do that step next. I do thank you for your help and info.

Thanks!

Ledz

You're welcome. As for the TPS reset, I do not have a gas analyzer. I did the baseline set to 150 mV, then the set to 434 mV, then used the air-bleeds to set idle from there. Some purists may say that I missed the most important step by not checking CO levels (and I don't necessarily disagree) but these three steps alone cured the issue... and I still passed the emissions test when it was time for annual registration.

Yes I read in the crappy haynes about the gas analyzer and couldn't believe you had to take it to a duc dealer to deal with it. However I always know to come here for answers, I have no duc dealer near me since I moved away from CA. So this site is mainly my mechanic. I also had some other guy pull off my charcol canister about a 2 years ago since he said its not needed here and I found  out by taking a rubber plug and just sticking it in the manifold without doing any type of throttle setting which he did, would create much more problems. So I believe it stems from that, as well as faulty bodies. I am gonna try your steps and see if it improves.

Where I live now smog, recycling, etc is of no importance, so many a day you'll see black smoke roll outta buses and trucks like it's normal because people here aren't up on these things  and you basically just go get a sticker witout  any smog cert etc.  [roll] but I guess it doesn't matter  now since we get are daily dose of metal particles from the sky..

It cost an amazing $17 to register your bike for 2 years..  [laugh]

What you described about the charcoal canister has me concerned. Mine is also eliminated but I have used a length of tubing to connect the bungs in the manifolds to each other. You can do this, or you can cap them off, or use little M5 bolts to replace them. Having the manifold bungs open allows air into the TB's and might account for the weird idle.

By bungs in the manifold, I mean the little brass nipples that are used to connect a manometer to balance the throttle-bodies.

There... I said bungs and nipples in the same post!