1. Some members were not receiving emails sent from XJbikes.com. For example: "Forgot your password?" function to reset your password would not send email to some members. I believe this has been resolved now. Please use "Contact Us" form (see page footer link) if you still have email issues. SnoSheriff

    Hello Guest. You have limited privileges and you can't "SEARCH" the forums. Please "Log In" or "Sign Up" for additional functionality. Click HERE to proceed.

XJ750 Maxim not starting after winter break - taser/clicking sound

Discussion in 'XJ Technical Chat' started by ddanielf, Apr 1, 2021.

  1. ddanielf

    ddanielf Member

    Messages:
    33
    Likes Received:
    1
    Trophy Points:
    8
    Location:
    Denmark
    Hi,

    I'm trying to start my bike again after winter break and it's not working :(
    When I started it, the battery seemed to be working fine (lights on, and the ignition seemed to be working, checked the spark plugs and they are firing, honk works) but now, after many failed attempts, the battery seems to be dead? I hear this "taser" sound - see video https://imgur.com/B7hF5uS

    Did I just drained the battery? Could the issue also be the starter motor?
    Could the engine be flooded after all these attempts?
    Any suggestions?

    Your input is greatly appreciated :)
    Thanks!

    EDIT: I have a gel battery that is 3 years old.
     
    Last edited: Apr 1, 2021
  2. Franz

    Franz Well-Known Member

    Messages:
    4,109
    Likes Received:
    1,163
    Trophy Points:
    113
    Location:
    Scotland UK.
    Battery must produce a minimum of 10 volts when you are pressing starter button to operate to the transistors in your TCI. But your plugs had a spark. Charge the battery first. Do you have the original fuse box. If so change it for a blade fuse box.
     
  3. Franz

    Franz Well-Known Member

    Messages:
    4,109
    Likes Received:
    1,163
    Trophy Points:
    113
    Location:
    Scotland UK.
    You can try and start it off a car battery too. What is the chattering noise? Is it the solenoid?
     
  4. ddanielf

    ddanielf Member

    Messages:
    33
    Likes Received:
    1
    Trophy Points:
    8
    Location:
    Denmark
    Thanks for your reply. The battery gives 11 volts when the key is on but as soon as I press the start button it drops to 4 volts.
    The sound comes from the right side of the bike under the seat. You can hear it in the video https://imgur.com/B7hF5uS
     
  5. Franz

    Franz Well-Known Member

    Messages:
    4,109
    Likes Received:
    1,163
    Trophy Points:
    113
    Location:
    Scotland UK.
    Sound is probably the solenoid clicking, due to low voltage. Can you use jump leads off a car battery? Four volts is far too low to make your transistors work properly in the TCI unit. If they don't work no spark at plugs. Check all your electrical connections and your wiring harness plugs, especially at the TCI, and the ones going from the starter switch unit on the handlebar to the harness in the headlight shell, make sure they are clean. Spray with WD-40. Check the ground connections to the frame for corrosion and clean them up. It could be voltage drop due to a corroded connection, and your battery could be fine. Check your plug caps are tight on the high tension leads, there is no corrosion where the lead joins the cap.

    You could try roll starting the bike because then the rear wheel can turn the engine over when you have the ignition on and drop it into second gear and the power the starter motor etc would use can be used for the ignition system, at least then you can check if it will start.
     
    Last edited: Apr 1, 2021
  6. ddanielf

    ddanielf Member

    Messages:
    33
    Likes Received:
    1
    Trophy Points:
    8
    Location:
    Denmark
    It's strange because the spark plugs are still firing.
    My headlight bulb doesn't turn on. Only the small one is on. It has been like this even before I stored the bike for the winter. Could this be related?
    The battery could be drained now because I've pushed the start button a lot of times and some times I just kept pressing it. And eventually it ran out, it seems like.
    I could replace the battery with a new one. I'll try to roll start the bike tomorrow.

    Before the battery died I tried to start the bike with the petcock on the 3 different positions (Pri, Res and On). Couldn't start the bike.
    There's plenty of gasoline in the tank (almost full) so it shouldn't be a fuel issue. But for some reason, even before the battery died, I couldn't start it.
     
  7. Franz

    Franz Well-Known Member

    Messages:
    4,109
    Likes Received:
    1,163
    Trophy Points:
    113
    Location:
    Scotland UK.
    Do you have a workshop manual and a multimeter?
     
  8. ddanielf

    ddanielf Member

    Messages:
    33
    Likes Received:
    1
    Trophy Points:
    8
    Location:
    Denmark
    I have the service manual and a multimeter.
     
  9. scoobydew

    scoobydew Member

    Messages:
    145
    Likes Received:
    16
    Trophy Points:
    18
    Location:
    new york
  10. Huntchuks

    Huntchuks Well-Known Member

    Messages:
    1,135
    Likes Received:
    506
    Trophy Points:
    113
    Location:
    East Rochester, NY
  11. cgutz

    cgutz Well-Known Member

    Messages:
    1,203
    Likes Received:
    719
    Trophy Points:
    113
    Location:
    SE South Dakota
    I have found my cheap harborfreight battery tender does the job. I keep it plugged in over the winter. Don't hate me for using harborfreight...

    I seem to get an extra couple of seasons out of my lead acid batteries using the tender vs. without.
     
  12. XJ550H

    XJ550H Well-Known Member Premium Member

    Messages:
    13,199
    Likes Received:
    3,861
    Trophy Points:
    113
    Location:
    Great North Woods
    yes
    sounds like soilnoid clickking due to low voltage
    swap in another set of plugs if you used starter fluid plugs will be fouled if it failed to start

    do a voltage drop test to see what battery falls to when starting.
    record sitting voltage. should be 12.8 volts
    press starter button see what voltage drops to when cranking 10 volts or less is a no start situation

    charge battery or jump bike with car battery car not running.
    3 year old battery may be time for a new battery
     
    ddanielf likes this.
  13. bensalf

    bensalf Well-Known Member

    Messages:
    1,350
    Likes Received:
    280
    Trophy Points:
    83
    Location:
    yorkshire ,england
    yes , but if you are spinning the engine with the spark plugs out , to see the spark, then the engine will spin much faster ,and will draw much less current from the battery,
    hence the plugs spark, then, when you replace the plugs , the compression draws a lot more current, --- voltage then drops to 4 ---- plugs dont spark.
     
    k-moe, ddanielf and Franz like this.
  14. hogfiddles

    hogfiddles XJ-Wizard, Host-Central NY Carb Clinic Moderator Premium Member

    Messages:
    14,859
    Likes Received:
    5,173
    Trophy Points:
    113
    Location:
    near utica, new york
    Get a new GOOD battery
     
    k-moe likes this.
  15. SQLGuy

    SQLGuy Well-Known Member

    Messages:
    2,140
    Likes Received:
    175
    Trophy Points:
    63
    Location:
    Colorado Springs, Colorado USA
    On most XJs, the headlight doesn't come on until the bike is running. This is to make more power from the battery available for cranking and starting.
     
  16. SQLGuy

    SQLGuy Well-Known Member

    Messages:
    2,140
    Likes Received:
    175
    Trophy Points:
    63
    Location:
    Colorado Springs, Colorado USA
    After sitting for a while, gasoline evaporating in the carbs may have gummed up the enrichment passages, and maybe jets, etc. Might need a cleaning, or might at least need some starting fluid or propane to get it started the first time without having to crank for an hour. This is one of my top reasons for hating carburetors.
     
  17. hogfiddles

    hogfiddles XJ-Wizard, Host-Central NY Carb Clinic Moderator Premium Member

    Messages:
    14,859
    Likes Received:
    5,173
    Trophy Points:
    113
    Location:
    near utica, new york
    GET A NEW GOOD BATTERY
     
    k-moe likes this.
  18. XJ550H

    XJ550H Well-Known Member Premium Member

    Messages:
    13,199
    Likes Received:
    3,861
    Trophy Points:
    113
    Location:
    Great North Woods
    with the 750 maxim the headlight comes on with key but is wired through the starter button so it goes off when you press the button
     
    ddanielf likes this.
  19. ddanielf

    ddanielf Member

    Messages:
    33
    Likes Received:
    1
    Trophy Points:
    8
    Location:
    Denmark
    Thank you all for the great input :)
    I bought a battery charger and charged the battery. Put it back on and it fired right up :D

    My headlight still doesn't work tho. I've inspected the bulb and it's in perfect condition, so it must be the wiring. Any suggestions to where look first?
     
  20. hogfiddles

    hogfiddles XJ-Wizard, Host-Central NY Carb Clinic Moderator Premium Member

    Messages:
    14,859
    Likes Received:
    5,173
    Trophy Points:
    113
    Location:
    near utica, new york
    The headlight
    The headlight switch
    The fuse
     
    k-moe likes this.
  21. XJ550H

    XJ550H Well-Known Member Premium Member

    Messages:
    13,199
    Likes Received:
    3,861
    Trophy Points:
    113
    Location:
    Great North Woods
    in the control on the starter button . the 750 maxim has a contact point on the starter switce just a flat piece of metal it must be cleaned is hard to clean it was designed to cut the headlight when you push the starter button. you will also see the starter button contacts next to it. electronic spray cleaner and what ever you can use to clean it.
     
  22. ddanielf

    ddanielf Member

    Messages:
    33
    Likes Received:
    1
    Trophy Points:
    8
    Location:
    Denmark
    Just a quick update: turns out the headlight wasn't working because the blue wire was damaged (literally cut off).
    So I've fixed now and have light again :)

    Thanks for all the insight.

    On another note, I've changed the oil today and I could see a lot of fragments in the bottom of the oil pan.
    Should I be concerned? Could these be from engine wear?
     
  23. Franz

    Franz Well-Known Member

    Messages:
    4,109
    Likes Received:
    1,163
    Trophy Points:
    113
    Location:
    Scotland UK.
    Black plastic fragments? Alternator/starter chain guide breaking up not engine wear. Crankcases need split to replace it. Can you post pictures of the fragments?
     
    Last edited: Apr 24, 2021
    ddanielf likes this.
  24. hogfiddles

    hogfiddles XJ-Wizard, Host-Central NY Carb Clinic Moderator Premium Member

    Messages:
    14,859
    Likes Received:
    5,173
    Trophy Points:
    113
    Location:
    near utica, new york
    Fragments of what?
     
  25. ddanielf

    ddanielf Member

    Messages:
    33
    Likes Received:
    1
    Trophy Points:
    8
    Location:
    Denmark
    Yes, most were black. I didn't took a picture, unfortunately.
     
  26. Franz

    Franz Well-Known Member

    Messages:
    4,109
    Likes Received:
    1,163
    Trophy Points:
    113
    Location:
    Scotland UK.
    It causes gear selector problems eventually, don't use the bike. The chain will damage the oil spray nozzle behind the alternator rotor if the guide is failing.
     
    Last edited: Apr 24, 2021
    k-moe likes this.
  27. ddanielf

    ddanielf Member

    Messages:
    33
    Likes Received:
    1
    Trophy Points:
    8
    Location:
    Denmark
    Doesn't sound good. What should I check/do?
     
  28. k-moe

    k-moe Pie, Bacon, Bourbon. Moderator Premium Member

    Messages:
    19,647
    Likes Received:
    6,755
    Trophy Points:
    113
    Location:
    The City of Seven Hills
    emergency_guidectomy

    If they are chunks of plastic, then an engine removal and split will be necessary.
    It's not a difficult job, but it does take a fair amount of time and planning.

    That last bit in the linked article, where the author says that the chain cannot contact the case, is incorrect. He got lucky. Both the case and the oil nozzle can be worn away by the alternator chain when the guide completely fails.
     
  29. ddanielf

    ddanielf Member

    Messages:
    33
    Likes Received:
    1
    Trophy Points:
    8
    Location:
    Denmark
    Are there any other "symptoms" on the bike that could mean this?
     
  30. XJ550H

    XJ550H Well-Known Member Premium Member

    Messages:
    13,199
    Likes Received:
    3,861
    Trophy Points:
    113
    Location:
    Great North Woods
    shifting problems stuck in gear
     
  31. ddanielf

    ddanielf Member

    Messages:
    33
    Likes Received:
    1
    Trophy Points:
    8
    Location:
    Denmark
    Haven't experienced anything of the sorts.
    To be honest I didn't inspect the pieces that closely - stupid of me. But It's also possible that the oil pan was also dirty.
    That's why I'm confused now - I guess I'll have to check closely next time I do an oil change.
     
  32. Franz

    Franz Well-Known Member

    Messages:
    4,109
    Likes Received:
    1,163
    Trophy Points:
    113
    Location:
    Scotland UK.
    If you have the old oil you might find some fragments in it. Pour it through a sieve and if you find any post a picture.

    When l stripped my engine there was some oil sludge in the oil pan but nothing else.
     
    Last edited: Apr 25, 2021
  33. ddanielf

    ddanielf Member

    Messages:
    33
    Likes Received:
    1
    Trophy Points:
    8
    Location:
    Denmark
    I don't have the oil anymore. I'll have to pay attention to the next oil change.
    But thanks for the suggestions.
     
  34. XJ550H

    XJ550H Well-Known Member Premium Member

    Messages:
    13,199
    Likes Received:
    3,861
    Trophy Points:
    113
    Location:
    Great North Woods
    If you follow the emergency Guide eco
    osted above, you should be able to look in and see larger chunks inside of the hole
     

Share This Page