Can't Start bike/ Prime help!!!

[jorgecornet]

Good Day Everyone,

I have a 2005 M620 that I bought in April with about 8000 Miles on it. I have been riding the bike for over 2000miles and now the first questionable problem has come.

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The other night as i was leaving work in Manhattan, the bike did not start so I decided that i would roll it down an Ave and bump start it. Story short 2 hrs. later i was rolling the bike back to work because i killed the battery after hours and multiple pushes. I came to realize that the fuel pump wasn't priming. Two days later I came back to work looked at the bike just for fun turned it on. IT primed and started right away. I then decided I was going to ride the bike back home that night. Later that night it started up fine but it died after 10 blocks somewhere on 7th Ave. (would not prime afterwards) so I just pushed it back to work and left it there to be trailered home.

After reading up online. I noticed it could be a faulty fuel pump relay. I went to Trebor Cycles in NJ and purchased 3 relays (main+fuel+spare) came home and replaced the old ones. Bike started up, took it for a ride with my GF and after 15 minutes of "close to the house" riding it died just like it had in the city.Would not prime afterwards.

SO NOW....

that i have replaced the relays, i am thinking of replacing the fuel pump if i have no other ideas. I was quoted at $1010 for the pump assemply +labor not included. I looked at Ca-Cycleworks and they have just the pump for $149.I just ordered a multimeter from ebay just in case to check random stuff.The main issue from what i see is the pump not priming and if it does the bike is not running for more than 10-15 min.


So my question is might there be something I am overlooking?

jorge cornet

www.youtube.com\jorgecornet

[Howie]

Buying and replacing likely parts is a little like going to the roulette wheel and hoping to win.  It can be time consuming, expensive and unsuccessful.  The answer is to troubleshoot the bike when the problem happens.

Is there power going to the fuel pump?  Check at the connector under the tank.  One wire is for the fuel pump, one for the low fuel light, two for ground.
If power is at that connector make sure you have a good ground.

No power at the connector?  Power and ground it directly from the battery.  Pump runs?  The pump is good.  Time top trace back.

Is there power to the fuel pump relay?  No?  keep tracing back.  Yes?  Jump (bypass) the relay.  Pump works? bad relay.  This should give you the general idea.
Don't forget the sidestand switch.  Oh, is there anything else that stops working when the bike stalls, like the speedo or signals? 

You will need a wiring diagram.  It is in back of you owner's manual.  If you don't have an owner's manual you can download one here:
http://www.ducati.com/services/maintenance/index.do

[jorgecornet]

I was under the assumption that my relay was receiving power as it "clicked", even after i replaced them. I was thinking that the pump might be bad as it is not getting power consistently now that my relays are new and it shut off while riding again.

When a pump goes bad...does it just kind of slowly malfunction or does it just die? I am waiting for my muli-meter to finalize the testing..