RBPOL Posted 15 hours ago Report Share Posted 15 hours ago My 2022 Vertigo Nitro JB replica with battery, is extremely difficult to start. As the temperature drops more kicks are required to start it. In the garage at 10c it took 70 kicks to start it. Battery is good 13.3 volts, throttle body just cleaned and mass air flow cleaned, new plug. Took so long I thought it was broken. Suggestions please. Quote Link to comment Share on other sites More sharing options...
lemur Posted 4 hours ago Report Share Posted 4 hours ago I'd be checking the fuel pressure and if your bike is fitted with a capacitor in addition to the battery, she won't start without fuel pressure and it can not achieve fuel pressure unless the electrics are fully functional to support it. Checking the battery voltage at the fuel pump and not at the battery terminals is a good start because you may have voltage drop from bad connections before it reaches the pump or with poor grounding. Hope this helps some 👍 Quote Link to comment Share on other sites More sharing options...
RBPOL Posted 2 hours ago Author Report Share Posted 2 hours ago That sounds like a very good start. I have been told to try cracking the throttle a bit at the end of the kick travel. That doesn't seem to do anything. Where do I check the fuel pump voltage? Not sure if even have a wiring diagram. Can you point me to one? Also it was recommended to richen the tps setting. Not sure how to do that yet. Any more specific tips are welcome. By the way, once it starts it runs fine and does generally re start fine. Thanks. Quote Link to comment Share on other sites More sharing options...
lemur Posted 1 hour ago Report Share Posted 1 hour ago From what I've seen there is a lack of consistency in design and execution in their production bikes, so you are best to reverse engineer what you have purchased. Wiring diagrams that I have seen are sketchy and incomplete. One of my riding partners owns two of them now, he bought the second bike in the hope it would be a better starter and is still struggling with starting and lean fuel operation issues. Some have a battery and some have a cap but to be honest I expect it needs both. Capacitors charge relatively fast off the kick starter compared to a battery that stores a lot more electricity, but the solid state battery really lacks power in cold temps and your alternator needs to be operating at peak efficiency to generate sufficient power to both run the engine and charge the battery / cap to charge operating capacity so personally I would start right at inspecting the alternator and scope test everything on the wiring harness down stream of that. A boost or charge port for the battery is the best way to troubleshoot the battery and is a good add to any Fi or electric start bike imo. Quote Link to comment Share on other sites More sharing options...
RBPOL Posted 1 hour ago Author Report Share Posted 1 hour ago Ok, thanks. It has a tiny capacitor for the ecu, but not for starting. I do have a local shop with excellent technical knowledge, maybe i will just take it there. I bought this bike from the owner and he has been extremely helpful on issues that pop up. If I can't sort it out, it may have to go. Quote Link to comment Share on other sites More sharing options...
lemur Posted 1 hour ago Report Share Posted 1 hour ago The cap is on there to make the fuel pump work better. The cap is small compared to the one on a Montesa, personally I think I would double up on the cap, that would be cheap and easy, might even give immediate results if the cap on it is lacking. Quote Link to comment Share on other sites More sharing options...
RBPOL Posted 1 hour ago Author Report Share Posted 1 hour ago Thanks. I will see about that. Quote Link to comment Share on other sites More sharing options...
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