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Bike wont start

Discussion in 'XJ Technical Chat' started by Lokitruck, Aug 8, 2015.

  1. Lokitruck

    Lokitruck Member

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    ok guy i got my non vacuum fuel valve i get everything hooked up and go to start the bike and nothing. I know its getting gas now because its leaking from the fuel rail. Also i use to be able to get it to start on starting fluid now it wont even do that. Any ideas
     
  2. wink1018

    wink1018 Active Member

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    Gone through the carbs thoroughly?
     
  3. Lokitruck

    Lokitruck Member

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    Yes the carbs have been gone thru
     
  4. tabaka45

    tabaka45 Well-Known Member

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    Leaking through the fuel rail? Are the plugs wet?
     
  5. Lokitruck

    Lokitruck Member

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    The plugs are not wet and they do not smell like gas. However the spark plugs are black
     
  6. wink1018

    wink1018 Active Member

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    Fully charged battery? Got apark?
     
  7. k-moe

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

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    You should never have fuel leaking from anywhere. Tend to your carbs before you end up with a fire.

    In The Church of Clean
     
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  8. XJ550H

    XJ550H Well-Known Member Premium Member

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    first thing is to place your fire extingusher aside of your bike it pass pull pin aim spray and sweep.
    what do you mean be go to start it and nothing?
    could be a loose electrical connector under the gas tank that got knocked loose when you reinstalled the tank, are your clamps on fuel line in the proper place and tight?
    what work have you done on the carbs.
    check your oil level you may now have a crank case full of gas.....
    you could be flooding the motor with excess fuel.
    when you first fill the carbs sometimes you have to tap on the bowls to get the floats to work correctly
    against the inrush of fuel and air trying to escape.
    fsm guide to ignition problems.
    part 1.PNG
    part 2.PNG

    also check your voltages to tci
    go through all tests
     
    Last edited: Aug 9, 2015
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  9. XJ550H

    XJ550H Well-Known Member Premium Member

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    did you bring them to the church of clean just read another thread you posted about no fuel flow

    did you cap off the vaccum nipple like the other 3?
     
  10. MN-Maxims

    MN-Maxims St. Paul Minnesota

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    you will have to pull the carbs and carefully look to see why they are leaking, and make all the proper adjustments.
     
  11. rocs82650

    rocs82650 Well-Known Member

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    Lokitruck,
    You should have stayed with your "non vacuum petcock" thread. Thataway members would know what you've done.

    Gary H.
     
  12. XJ550H

    XJ550H Well-Known Member Premium Member

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    or provide links to them in your first post of the new thread
     
  13. Lokitruck

    Lokitruck Member

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    Ok it turns out the fuel leak was a loose fuel line so now its not leaking. I went to try to start it this morning and it sputtered for a second then cut off. I hooked my truck up to the battery and it just cranked. All of the connections were connected. As for anything else i dont have a volt regulator
     
  14. k-moe

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

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    Your bike does not have one of these!?
    [​IMG]
    I hope that you mean something else, because if the voltage regulator isn't there you'll never get the bike started; and if it's bypassed you will have a whole heap of troubles.
     
  15. Lokitruck

    Lokitruck Member

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    I have that. I meant I don't have the tool to measure voltage
     
  16. rocs82650

    rocs82650 Well-Known Member

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    A digital multimeter (dmm).

    Gary H.
     
  17. k-moe

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

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  18. XJ550H

    XJ550H Well-Known Member Premium Member

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    picked up a spare dmm at walmart the other day for 20$ it has a temp prob to 1800 degrees.
    the 25 $one had a battery condition tester but no temp probe.
    simpson meter big black bakalite box? havent seen mine for years
     
  19. rocs82650

    rocs82650 Well-Known Member

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    Again...I knew you were going to say that!o_O:). Nothing fancy but I have both.

    20150810_064159.jpg

    Gary H.
     
  20. BigT

    BigT Active Member

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    I see you have both shoes as well Gary!;)
     
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  21. rocs82650

    rocs82650 Well-Known Member

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  22. Lokitruck

    Lokitruck Member

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    after trying to start the bike for a while, i will let it sit and try to start it the next morning and it will sputter to life for a split second then cut off and then just crank
     
  23. rocs82650

    rocs82650 Well-Known Member

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    Loki,
    Some of the answers you seek have been given. Your bike will not idle nor run until you properly tend to and test specific components. Let's go back...are the valves in spec? Got a compression number for each cylinder? Hang in there, we're here to help, but we need you to do your part in a certain way so together we can get it to idle and keep it running.

    Gary H.
     
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  24. Lokitruck

    Lokitruck Member

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    Valves are in spec yes. Now forgive me. the coils on the driver side is ignition coils and the passenger side is the pick up coils?
    Ignition coils are reading 3.4 ohm
    Pick up coils are reading 3.3 ohm. Is this right?
    Im still unclear on how to check if the tci unit is good
     
  25. k-moe

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

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    You have two coils. Left side is for cylinders 1 and 4; right side is for cylinders 2 and 3. The pickup coils are under the left-side YICS cover.

    The only DYI check for the TCI is to swap it with a known-good TCI, or swap a suspect TCI onto a known-running motorcycle.
     
  26. Lokitruck

    Lokitruck Member

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    Does anyone sell replacement tci units
     
  27. Lokitruck

    Lokitruck Member

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    Sorry again how do i check the pick up coils ohm?
     
  28. Lokitruck

    Lokitruck Member

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    i checked the ignition coils from the spark plug boot to the coil and i was getting no reading. I took my number one spark plug out and ground it to something and saw no spark. Is it safe to assume my ignition coils are bad? I tested both the coils number 1 and 4. Numbers 2 and 3 and got zero reading. Is it wierd that both would go bad?
     
  29. rocs82650

    rocs82650 Well-Known Member

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    Do you have a manual? You're trying to test for spark. You need to test the primary (power into the coils) and secondary (power out of the wires and caps) to the spark plugs. The secondary should be tested with and without the caps because a bad resistor (inside the cap) doesn't make the coil bad.

    Gary H.
     
  30. Lokitruck

    Lokitruck Member

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    Ok so i checked secondary ignition coil wrong. I stuck the multimeter ends in both the 1 and 4 spark plug and got a blip of numbers and the same thing on the 2 and 3 cylinders. So i will unscrew the spark plug boots and check again tomorrow.
     
  31. Lokitruck

    Lokitruck Member

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    I do have a manual. I watched a youtube video that lead me in a wrong direction however after searching past threads i now know the correct way to do it and will attemp and keep everyone posted
     
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  32. k-moe

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

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    Unless a Youtube video is linked from this site you should ignore it.
     
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  33. rocs82650

    rocs82650 Well-Known Member

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    Reconnect the primary side when testing the secondary, use the ohms scale to test the primary (2.5Ω +/- 10%) and the kilo ohms scale to test the secondary (11KΩ +/- 20%).

    Gary H.
     
  34. Lokitruck

    Lokitruck Member

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    After taking the spark plug boots off to check the secondarys both are in the lower 120oo range. I think that is good. Right? Well now on to the pick up coils but i am still unclear how to check them.
     
  35. XJ550H

    XJ550H Well-Known Member Premium Member

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    you test the pick up coils by unpluging the left connector of the tci it should read 650ohms for each coil

    there are 2 pick up coils you will be testing,
    i have a 550 max there are 4 wires in the left connector one is black to a bullet connector ignor it then there should be 2 wires of different color and another black. the black wire is a common wire then a gray wire 650 ohms between them then an orange wire test between black and ogange wire 650 ohms
    you will set your meter to 2 k ohms and see .650 for a reading

    see this thread
    http://www.xjbikes.com/forums/threads/she-messed-up-again-boys.69852/
     
  36. Lokitruck

    Lokitruck Member

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    I checked the pick up coils and if i did it correctly then i may have found the problem. I pulled the left connector and checked from the black wire to the gray and it read 014 ohms. Then i checked from the black wire to the orange wire and it read 013 ohms. So what does this mean. Is it more likely that i checked wrong?
     
  37. Lokitruck

    Lokitruck Member

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    The left connector from the tci unit i mean
     
  38. XJ550H

    XJ550H Well-Known Member Premium Member

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    how many wire you got in that tci connector just checking, and you did unplug to check ohms? just to be sure your black wire was not the one with bullet connector. if you follow the harness it goes down the bike to the shifter area.
    its supposed to be 650 ohms tested in the 2k ohms setting on meter, should read .650k ohms
    you need new pickup coils if tested 013 and 014.

    I would start by following harness down and removing it there may be another bullet connector on it which goes to the neutral switch , you may need to remove shifter side cover. the harness should go into the left side crank cover, just making sure you are testing the correct harness
    before you go out and buy the part
     
    Last edited: Aug 14, 2015
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  39. Lokitruck

    Lokitruck Member

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    I checked the ohms off the 4 wire connector. Should I have checked off the 6 wire connector?
     
  40. XJ550H

    XJ550H Well-Known Member Premium Member

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    the connector on the left as you sit on the bike yes it is 6 positions with 4 wires i will go get a photo
     
  41. XJ550H

    XJ550H Well-Known Member Premium Member

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    left connector 6pos 4 wires ignore the black and white wire disconnect to test
     

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  42. k-moe

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

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    The easy way is to take the gas tank off and check the primary resistance at the coils. It's also the best way since the spec does not take into account the resistance of the wiring harness.
     
  43. XJ550H

    XJ550H Well-Known Member Premium Member

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    now for more confusion unplug right connector
    test primary on ignition coil (spark plug coil)
    to test your primary for the ignition coil (spark plug coil)
    ohm reading for plug on right between red/white wire and orange. ohm reading gray wire to red/white wire

    set meter to lowest ohm setting looking for 2.5 ohms +- 10%
    if this test fails you will remove tank and test at connector at coils
     
  44. XJ550H

    XJ550H Well-Known Member Premium Member

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    he wants to test the pickups, but yes when testing primary it is best to get as close as possible to the ignition coil
     
  45. Lokitruck

    Lokitruck Member

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    I did check the ignition coils already the primarys and the secondarys and they were to spec. I did pull the wrong connector to check the pick up coils so I need to check that when I get home. I already have the tank off so that's how I checked the ignition coils. If the pick up coil ends up having the right amount or ohms then that would leave me to believe the tci unit is bad?
     
  46. Lokitruck

    Lokitruck Member

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    After rechecking my pick up coils off the right connector this time I had a reading of
    Orange wire = 660
    Gray wire = 673.
    I think the pick coils are good. so does that mean the tci unit is bad?
     
  47. MN-Maxims

    MN-Maxims St. Paul Minnesota

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    If the pick up coils ohm out and your main ignition coils ohm out and you still do not have spark then you should pull the TCI and send it to one of the guys who fixes them. Robert used to but I'm not sure who else is doing that these days
     
  48. k-moe

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

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    Have you confirmed that there is voltage reaching the TCI?
     
  49. Lokitruck

    Lokitruck Member

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    Kmoe i have checked everything from the ignition coils on down the line to the tci. Im not sure what you mean though asking if the tci unit is getting voltage is there a way to check?
     
  50. Lokitruck

    Lokitruck Member

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    Does anyone on here still fix them?
     

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