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Introduction of myself, a man with a plan

Discussion in 'Hangout Lounge' started by Possible malfunction, Mar 10, 2018.

  1. hogfiddles

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

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    You would pop the cap open, leaving it just looking closed... before you ride. You need the key for in the ignition
     
  2. Possible malfunction

    Possible malfunction Member

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    Okie doke, I'll do that when I head to work tonight and I'll let you know how it goes.
     
  3. kosel

    kosel Active Member Premium Member

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    Did you put in an online fuel filter? The wrong one could impede fuel flow.
     
  4. 50gary

    50gary Active Member

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    Thanks for the musical interlude, just clever enough, like it.
     
  5. XJ550H

    XJ550H Well-Known Member Premium Member

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  6. Possible malfunction

    Possible malfunction Member

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    Well, I'll probably replace the gas cap bits anyways, but I rode it with it open and no change. So it needs to be colortuned. I know that, but I'm at a loss what else it might be. I'm gonna try swapping out to non fuel filtered line next. Seeing if that makes a difference.
     
  7. Chitwood

    Chitwood Well-Known Member

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    Just for grins, have you pulled the fuel line off and made sure fuel is flowing freely through the petcock? Just a random thought. Also interested if the filter being omitted makes any difference. Colortune definitely shouldn't hurt. Have the carbs been running vacuum sync'd?
     
  8. Possible malfunction

    Possible malfunction Member

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    When I wet set float levels fuel was flowing fine. I did a running sync before I drove it. I have a gravity feed petcock with a filter, and an in line filter. Thinking maybe it's restricting it when it's pulling more, but not enough restriction to effect when it's pulling less. Swapping to straight fuel line without the filter will tell me something there I think.
     
  9. Possible malfunction

    Possible malfunction Member

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    Ok, so on the way home this morning I've learned a couple things. I'm not entirely sure where they're pointing, but yeah.

    Started from work ok. Before I went a mile it started in and progressively got worse on the 10 mile ride home. I stopped and shut it off 5 times, once for 20 minutes just to see if maybe it was overheating because that's sort of how it was acting... Had loss of power slightly, mild surging and it was running rougher the further I went even with the stops, and now it's through all ranges of the throttle.

    Not knowing a lot yet, but with this new knowledge I would hazard a guess that it's running either rich or lean and has fouled out the spark plugs. (Haven't checked yet, but will when I wake up)
    Any of you gurus concur with my guess of what the symptoms point to?
     
  10. XJ550H

    XJ550H Well-Known Member Premium Member

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    what kind of filter are you using ? not a paper one I hope
    the filter wants to be low in regards to the petcock so it does not become air bound.
     
  11. Possible malfunction

    Possible malfunction Member

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    As far as I know it's an original filter. I haven't gotten around to replacing that yet, but plan to in the next month.
     
  12. hogfiddles

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

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    I can say for a fact that we KNOW the carburetors are clean......lol

    It wouldn't be the first time that a TCI went bad, or a coil.
     
  13. Possible malfunction

    Possible malfunction Member

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    Ok, updating and a question.

    I've replaced the coils, TCI unit, rechecked float levels, replaced spark plugs, spark plug caps and wires, checked air filter, removed fuel petcock fuel filter, colortuned, resynced, and still no dice. Same issue presenting.

    Question is this (since I'm thinking way outside the box now) is it possible that since I'm using a 650 Maxim carb rack re-needled and jetted for a 750 seca that I'd need to use the air box boots from the 650 for proper air flow, or perhaps boots and air box?

    Thanks for the help folks.
     
  14. hogfiddles

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

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    Shouldn't, since 650/750 bodies are the same
     
  15. hogfiddles

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

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    Take stuff with you so that When it dies, you can pull #1 plug to test for spark, then do #2......
     
  16. Possible malfunction

    Possible malfunction Member

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    Ok, so I've narrowed it down. I put my old carbs back on to see what that would do and the problem went away, so I've come to the conclusion that since I've never really messed with carbs before and don't really know what I'm doing with em I should enlist the brother in law's help. He's a mechanic and has some know how about carbureted bikes, so gotta wait for him to find time in his busy shedule, but it's a major load off to know what was causing the issue.
    Granted, the issue is that I don't know what I'm doing to get the carbs set right, but getting a chance to see someone do it will help me broaden my knowledge base so I can get em set right next time around.
    Thank you very much everyone for the help, and sorry for the wild goose chase.
     
  17. dkavanagh

    dkavanagh Well-Known Member Premium Member

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    One of the moderators (Hogfiddles) offers re-build services. You might be able to trade money for time. He does a great job! (and did on mine!)
     
  18. Possible malfunction

    Possible malfunction Member

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    Yeah, he rebuilt and cleaned them already, it's setting them to my bike I'm having trouble with.
     
  19. hogfiddles

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

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    And, if need be. Send them back and I'll check through everything
     
  20. Timbox

    Timbox Well-Known Member

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    Possible Malfunction,
    just read through your thread, sounds like you have it trouble shot down to the carb? If for some reason you had junk floating around in the tank and and somehow got into the carbs that would do it. I trust the work hogfiddles does as he has a good rep for his work. No chance something from the tank got into the carbs? I think I saw one of the pics had a fuel filter in there.

    It can be supper frustrating to have the bike work for a short time but then stop working as it should. Sometimes we all need to just take a day away from it and come back to it later on. I see from the pics in this post that you had it living with you in your house...that gal is a keeper, not many partners would stand for that ;)

    Best of luck finding the cause for this running issue.
     

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