Ducati Monster Forum

Hello all,
I took my 2008 S2R 1000 out of winter hibernation yesterday = very exciting!

I started it and let it run while I put my gear on to take her for a rip.  By the time I went outside, the bike was puring and sounded great.

I went to sit on it and all of a sudden, the idle/RPM speed started to very slowly decrease until it just stopped.

I tried to start it again but no luck. 

I then dumped a very small amount of gas into the air intake for each cylinder and it started up for a few seconds and then died again.  It seems to not be getting any gas.

I can hear the gas pump turn on when I turn my keys on so I dont think it is the pump.  Could it be the filter?  If so, I believe that this is inside the tank.  Can anyone point me to what they think the cause may be and if it is the filter, is there a how to on this forum to show me what to do?  Also, where to do I purchase a fuel filter from?

It could also be the fuel injectors are plugged I guess.

What do you all think it could be?

Much appreciated!  Thanks.
grunte

Simple and cheap first.  Fuel filter is a maintenance item so it won't hurt to change it.  Also inspect the fuel lines while you are in there.

Thank you @howie.

I found these instructions so hope to do this tonight.  

http://www.ducatimonsterforum.org/index.php?topic=17213.0

Where to do I get a filter from?  Should I order online form a particular place or will NAPA have them?

Thanks again.
g

I just went to double check the bike because I read on this forum that the fuel pump my be bad.  When I turn on the bike I do not hear the fuel pump engage.  I don't believe this is normal.  If the pump is primed already, you would at least hear it turn on right?

Yes, the pump should prime with every key cycle. You may have bad wiring where the wires enter the pump flange.

Thanks ducpainter [beer]

Before I take out the fuel pump, should I check the relay?  If so, where would that be located?  I assume just follow the wire?

Once I do take out the pump, what am I looking for?
g

I woud start with the relay, again, cheap and eazy first.

I checked all my fuses.  I also checked the relays (they are clicking like normal).

I pulled out one of the gas lines from the fuel pump and tried to crank the bike,,,,no gas came out.

I just took off my tank and pulled out the fuel pump.

Not sure what I'm looking for...

Do I order a new pump?  I dont know where to get relays or pumps from...or filters. 

Ideas?

Will this work?  Seems a bit to INexpensive....

My duc is a 08 S2R 1000

https://www.amazon.com/Conpus-Performance-Ducati-Motorcyle-Monster/dp/B01M4NOGNG/ref=sr_1_12?keywords=ducati+s2r+fuel+pump&qid=1553545494&s=gateway&sr=8-12

Just for the heck of it, I plugged the fuel pump (now out of the tank) into the plug and turned my key....pump primed perfectly.  Faulty wiring I guess.

I see that the S2R's had faulty wiring where the wires go into the pump.  I peeled back the rubber boot and the plugs all go into a black piece of plastic it looks like.  I also see that there is a kit from Cycleworks.

What are my next steps?

Appreciate it!
g

And...

I put it all back together and it works....

Hmmmmmmm [shot]

You have a bad connection where the wiring enters the pump flange. It's common. Search the forum for 'S2R fuel pump wiring'.

Your pump is fine.

 [thumbsup]

Thanks all for your help.

I contact Jeff at Monsterparts and have ordered a new Cycleworks Fuel Flange Wire.

I post the outcome after the install.

Peace
g [beer]

Hello,
The good news is that my bike ran for approximately 50 miles after replacing the Fuel flange.  The bad news is that it again will not start.  It cranks over but the fuel pump once again does not prime.

Suggestions?

Thanks!
G

Now you know the problem is further down stream.  I'm having the same problem at this moment.  I'm getting proper voltage everywhere it needs to be, all the wires have good continuity, relays are working, and it runs fine when applied to a 12v source out of the bike.   If I find anything during my troubleshooting I will let you know. 

@Mr.Jinggles

Thank you I appreciate it.  I do not have a volt meter to test my voltage.

The pump was working great after I replaced the flange, kind of a bummer it just stopped again. 

If you have the same model bike as me:  do you know which relay controls this?, or is it just the fuses?

Thanks.
G

Call Ca Cycleworks/Monsterparts to see when your wires were made. Chris posted on FB on May 2nd that there was a problem with some fwires  they sold.


On FB
Chris @ Ca Cycleworks "So ... it was all that to say we screwed up with some of the recent FWIRES sold and if you have another loss of continuity, it is probably because the urethane expanded and broke your wire. Please let us know so we can get you a set with the new angry epoxy."

David  "Is there a way to tell with when we ordered?

CA Cycleworks  "yes, Nov 2018 until mid April, 2019. "

Monsterparts may have bought your wires within this time period.

Needless to say, if you bought a harness manufactured between those dates you need to replace it.  You also need to confirm you don't have different problem.  Replacing parts as guess can get real expensive plus not get your bike fixed. 

If you plan on working on anything electrical on your bike you need a digital multi meter.  You can buy an inexpensive meter.  And a wiring diagram.

                                               Not an endorsement, just an example:
                                               https://www.walmart.com/ip/Digital-Multimeter-10709/14521541


When the bike stalls. lift the tank and remove the connector to the fuel pump.  With the key on if you do not have power at the brown/white wire the problem is probably either the FI relay or wiring to that point. 

@howie, @2 Wheel Wanderer,

Thank you!  I called the vendor that I purchased the harness from and they stated that there was indeed a bad batch they recieved.

They are receiving a new batch of flanges from their vendor and are sending me a new one no charge.  I am very happy with this and hope it resolves the issue.

 [thumbsup]

Good to hear!