Taxguy Posted July 19, 2021 Share Posted July 19, 2021 2004 Le Mans. The fuel pump doesn’t prime like usual, bike spins over but doesn’t fire. I’ve checked all fuses and don’t know what to try next. Any ideas? Thanks. Link to comment Share on other sites More sharing options...
Weegie Posted July 19, 2021 Share Posted July 19, 2021 I don't own a V11, but looking at the wiring diagram and assuming all the usual stupid shit has been checked, it's not the sidestand or kill switch as the starter is locked out AFAIK. I'd start by swapping over the fuel pump relay and possibly the ECU relay with others to see if anything changes, I'd also listen to hear if I could hear the relays trying to pickup. Check for voltage on fuse 2 (feeds the injection relay) on both sides. Also check voltage at fuse 1 (feeds the ECU relay) If either of them are not picking or getting power then you got no spark and no fuel. Just a first guess, but others who know more will chime in I'm sure 1 Link to comment Share on other sites More sharing options...
docc Posted July 19, 2021 Share Posted July 19, 2021 Fuses One and Two (from the front), Relay #5 (in the back), and that a ring terminal did not get left off the battery on either side (+/-)……. 1 Link to comment Share on other sites More sharing options...
Tomchri Posted July 19, 2021 Share Posted July 19, 2021 I woud check the 4 connectors under fuse 1 and 2. Cheers Tom. 1 Link to comment Share on other sites More sharing options...
docc Posted July 19, 2021 Share Posted July 19, 2021 32 minutes ago, Tomchri said: I woud check the 4 connectors under fuse 1 and 2. Cheers Tom. Yes, indeed. Tom! (The fuse block simply pries up out of the rubber isolation mounts without having to remove the fasteners.) These: By far the most common no-start after a battery change is one of the several ring terminals getting left off. Link to comment Share on other sites More sharing options...
Taxguy Posted July 19, 2021 Author Share Posted July 19, 2021 Thanks for the replies, I took out the battery and reinstalled in just the same way. Then when I turned it on the fuel pump groaned and came back to life and it runs great. Italian gremlins I think. 1 Link to comment Share on other sites More sharing options...
GuzziMoto Posted July 20, 2021 Share Posted July 20, 2021 A job worth doing is worth doing twice..... Link to comment Share on other sites More sharing options...
LowRyter Posted July 20, 2021 Share Posted July 20, 2021 .....a variation of the musical relay game. Next time remember to dance around the bike rattling chicken bones. Good MoJo. 3 2 Link to comment Share on other sites More sharing options...
Lucky Phil Posted July 21, 2021 Share Posted July 21, 2021 On 7/20/2021 at 8:45 AM, Taxguy said: Thanks for the replies, I took out the battery and reinstalled in just the same way. Then when I turned it on the fuel pump groaned and came back to life and it runs great. Italian gremlins I think. Or maybe, just maybe, you missed connecting one of the hot side battery wires. Like the one that powers the ECU through fuses F1 and 2. Ciao 1 Link to comment Share on other sites More sharing options...
docc Posted July 21, 2021 Share Posted July 21, 2021 5 minutes ago, Lucky Phil said: Or maybe, just maybe, you missed connecting one of the hot side battery wires. Like the one that powers the ECU through fuses F1 and 2. Ciao Or on the grounding side. So many ring terminals, so little space. So easy to drop one on a battery change. Very happy the "revisit" yielded the desired outcome, @Taxguy 2 Link to comment Share on other sites More sharing options...
Lucky Phil Posted July 21, 2021 Share Posted July 21, 2021 5 minutes ago, docc said: Or on the grounding side. So many ring terminals, so little space. So easy to drop one on a battery change. Very happy the "revisit" yielded the desired outcome, @Taxguy Yep, it's a skill getting all those wires on the bolt including the battery tender wire and threaded onto the terminal. Imagine casting aspersions on Italian electrics! Ciao 1 Link to comment Share on other sites More sharing options...
docc Posted July 21, 2021 Share Posted July 21, 2021 On 7/19/2021 at 5:45 PM, Taxguy said: "Italian gremlins I think." 19 minutes ago, Lucky Phil said: "Imagine casting aspersions on Italian electrics!" 1 1 Link to comment Share on other sites More sharing options...
gstallons Posted July 21, 2021 Share Posted July 21, 2021 Please....... Link to comment Share on other sites More sharing options...
Nihontochicken Posted July 21, 2021 Share Posted July 21, 2021 I can recommend the L-shaped battery terminal connectors to circumvent the cramped access to the standard configuration: There is enough room where they don't rub on the seat pan in my scooter. As far as source, can't find the original post, but I believe I got my set off of Fleabay. 1 Link to comment Share on other sites More sharing options...
Chuck Posted July 21, 2021 Share Posted July 21, 2021 I was at a gun show, and someone was selling "genuine copper commemorative coins" for something or other for like a dollar. I thought, "Hmmmm, those look just like some 90 degree battery connections for the Mighty Scura." Some sawing and bending required. 1 Link to comment Share on other sites More sharing options...
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