Ducati Hyperstrada Forums Ducati Hyperstrada Motorcycle

Go Back   Ducati Hyperstrada Forum > Ducati Hyperstrada Forum > Ducati Hyperstrada

Ducati Hyperstrada Ducati Hyperstrada Motorcycle Forum: 2013-2015 Hyperstrada and 2016-2017 Hyperstrada 939


Reply
 
LinkBack Thread Tools Display Modes
Old October 17th, 2014, 07:08 AM   #1
Senior Member
 
Joined: May 2014
From: Long Island
Posts: 184

Does your fuel tank build vaccum pressure?

Ok folks....

Just want to see if this is part of an issue I'm having, so can you guys do something for me?

After riding your bike for a while, with fuel in the tank, put your ear to the gas cap while you slowly unscrew it and see if you hear vacuum being released when you open the tank. I have been experiencing throttle behavior problems, of late and only just recently noticed vacuum building up.

I first noticed after a complete fill up when a short while after the fill up I parked the bike and upon restarting the bike would start but not stay running... I opened the gas cap and heard a big woosh of air... the bike started and ran fine after I did that. This morning on the commute in I had reduced engine braking, wonky idle, and weird throttle response. I just went out to the bike and opened the gas cap again to another big woosh of air. If it misbehaves on the ride home, I'm going to stop and open the gas cap and ride again to see if its related.

Thanks for your help.
NurseDaddy is offline   Reply With Quote
 
Old October 17th, 2014, 09:04 AM   #2
Senior Member
 
Bruder's Avatar
 
Joined: Sep 2013
From: Germany
Posts: 181

I Ride: Hyperstrada and Monster 821, previously Monster 1100evo
Go to your Ducati dealer first, and read out the ECU this is the heart of the Bike! The rest you are doing pure speculation! The ECU safes all the faults you have on the bike!

Gruss Steffen

Last edited by Bruder; October 17th, 2014 at 09:10 AM.
Bruder is offline   Reply With Quote
Old October 17th, 2014, 09:28 AM   #3
Senior Member
 
Joined: May 2014
From: Long Island
Posts: 184

Quote:
Originally Posted by Bruder View Post
Go to your Ducati dealer first, and read out the ECU this is the heart of the Bike! The rest you are doing pure speculation! The ECU safes all the faults you have on the bike!

Gruss Steffen
I know. However, the local dealer has the attitude of "drop it off and we'll see what we can do with it when we get to it". There's no "while you wait" service. There's no "same day service" either. So given my history of doing all my own work and services, anything I can do to troubleshoot it before I go there and hand over my bike for an extended period of time will only make the turnaround at the dealer shorter, if it needs to go there at all.

If I saw "error" on the dash at all, I'd be calling them now. I have not seen an error message, or had any flashing lights or anything else other than this weird decel problem and an incident where it didn't start and stay running unless I took the gas cap off. My guess is the evap canister is full of fuel.
NurseDaddy is offline   Reply With Quote
Old October 17th, 2014, 10:00 AM   #4
Senior Member
 
Bruder's Avatar
 
Joined: Sep 2013
From: Germany
Posts: 181

I Ride: Hyperstrada and Monster 821, previously Monster 1100evo
With the evap canister I don't have any experience sorry! With you Duc dealer that really crap!
No chance to go to free motorbike shop and ask if he can read out the ECU and leave the fault on the ECU? So at least you know whats going on when you go to your Duc dealer!

Gruss Steffen
Bruder is offline   Reply With Quote
Old October 17th, 2014, 10:14 AM   #5
Senior Member
 
Joined: May 2014
From: Long Island
Posts: 184

Quote:
Originally Posted by Bruder View Post
With the evap canister I don't have any experience sorry! With you Duc dealer that really crap!
No chance to go to free motorbike shop and ask if he can read out the ECU and leave the fault on the ECU? So at least you know whats going on when you go to your Duc dealer!

Gruss Steffen
In New York, USA, there's very little that's free. Other than bad advice, and sometimes you even have to pay for that.
NurseDaddy is offline   Reply With Quote
Old October 17th, 2014, 11:52 AM   #6
Senior Member
 
Joined: Jun 2014
From: Boston
Posts: 860

I Ride: hyperstrada 821
I haven't had the throttle problem but I have filled the tank as you described. I don't do that anymore because when parked on the side stand, after fueling, gas pours through a vent onto the ground.

After a long ride my tank does emit sounds, like geese flying south - or Italian farts in Tuscany- so I think pressure does build up under the best of circumstances. But I'm not here to just to whine - what I'm thinking is that you might have a clogged vent somewhere - maybe a kinked hose.

I guess this is character because my cb500f had none of this going on, had a fuel gauge, and - well , never mind.
appliance821 is online now   Reply With Quote
Old October 17th, 2014, 01:00 PM   #7
Senior Member
 
Bruder's Avatar
 
Joined: Sep 2013
From: Germany
Posts: 181

I Ride: Hyperstrada and Monster 821, previously Monster 1100evo
Maybe free is the wrong word. Do you have a independent motorbike shop you can go! Here in Germany I have a very good one but it doesn't help you

Gruss Steffen

Last edited by Bruder; October 17th, 2014 at 01:29 PM.
Bruder is offline   Reply With Quote
Old October 18th, 2014, 03:51 PM   #8
Senior Member
 
Joined: May 2014
From: Long Island
Posts: 184

I'm going to update the other thread I started about my throttle behavior, but I'll say it here too....

problem solved....

by removing the evap canister.
NurseDaddy is offline   Reply With Quote
Reply

  Ducati Hyperstrada Forum > Ducati Hyperstrada Forum > Ducati Hyperstrada

Tags
build, fuel, pressure, tank, vaccum



Thread Tools
Display Modes


Similar Threads
Thread Thread Starter Forum Replies Last Post
Hyperstrada fuel tank capacity duc Ducati Hyperstrada 47 July 24th, 2016 05:02 PM
Differences in tank "Ducati" tank graphics Dryer Ducati Hyperstrada 14 August 15th, 2014 01:55 AM
Fuel Tank Expansion wasserboxer Mechanical and Technical 23 May 28th, 2014 06:38 AM
How do you fill up the fuel tank? HyperstradaHopeful Ducati Hyperstrada 3 April 5th, 2014 05:35 AM
Low Fuel Light Pinoybear Ducati Hyperstrada 19 January 21st, 2014 09:42 AM


Ducati Hyperstrada Facebook Ducati Hyperstrada Twitter Ducati Hyperstrada RSS Feed



Ducati Hyperstrada Motorcycle Forum
Copyright © 2012-2014 HYPERSTRADA.COM • All rights reserved.