Ducati Monster Forum

Moto Board => Tech => Topic started by: orlandofast1 on April 08, 2010, 02:17:56 PM

Title: 99 750 Carb Help
Post by: orlandofast1 on April 08, 2010, 02:17:56 PM
Well, after cleaning carbs and reassembling the bike runs better than ever. However once I pulled in with the bike idling I noticed a steady stream of fuel coming out of the float overflow and draining from the bottom of the carb. I tried tapping the bowl w/o any luck. Is my float stuck? Did I accidentally set the height too high? Any ideas?
Title: Re: 99 750 Carb Help
Post by: ducpainter on April 08, 2010, 03:12:00 PM
One or the other.

edit...

you didn't leave a drain screw loose did you?
Title: Re: 99 750 Carb Help
Post by: moto-zen on April 08, 2010, 03:21:52 PM
Sometimes those pesky little float needles will get caught up if they don't get put in juuust riiight.
Title: Re: 99 750 Carb Help
Post by: stevebussard on July 12, 2010, 08:48:13 AM
I have a 2000 750 doing the same thing.  I just picked it up a couple days ago, and had no issues with it.  It only has 4900 miles on it, so I'm thinking it must have sat a while.  Maybe some crud from the tank got into the float needle.  Does anyone think just some carb cleaner will help, or will I need to disassemble the carb and rebuild it?
Title: Re: 99 750 Carb Help
Post by: koko64 on July 12, 2010, 04:48:50 PM
Yeah, a bit of tank crud or crud from an old disintegrating fuel filter will do it. If tapping the float bowl don't fix it then give those carbs a clean and service. After 5000 miles you will need new needle jets anyway. Might as well put in a jet kit and get some Factory Pro stainless needle jets which will last longer.

I make a point of changing/checking fuel filters and cleaning out a tank of any older bike I buy. Giving the carbs a rebuild on an older bike shouldn't be seen as anything out of the ordinary. Even just pulling them apart and hitting them with carb cleaner and checking their specs and condition is a good idea when buying something older, even more so if it's been sitting around.

My '95 900 Monster had only 4500 miles on it when I got it. The tank and carbs were filthy. I cleaned out the tank three times. The needle jets were oval, and I went thru 4 or 5 filters in the first few thousand miles. I'm having the fuel outlet silver soldered at present to stop a 'sweat' from around the old outlet weld as we speak.

Good luck guys.
Title: Re: 99 750 Carb Help
Post by: ducpainter on July 12, 2010, 04:51:19 PM
Quote from: koko64 on July 12, 2010, 04:48:50 PM
<snip>
My '95 900 Monster had only 4500 miles on it when I got it. The tank and carbs were filthy. I cleaned out the tank three times. The needle jets were oval, and I went thru 4 or 5 filters in the first few thousand miles. I'm having the fuel outlet silver soldered at present to stop a 'sweat' from around the old outlet weld as we speak.

Good luck guys.
[threadjack]

Why not just coat the tank to solve that issue?

[/threadjack]
Title: Re: 99 750 Carb Help
Post by: koko64 on July 13, 2010, 02:47:41 AM
Quote from: ducpainter on July 12, 2010, 04:51:19 PM
[threadjack]

Why not just coat the tank to solve that issue?

[/threadjack]

Yeah, once it's repaired I've got a mate organizing some clean and coat stuff from a shop he's managing.