1. 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.

Morning start issues.

Discussion in 'XJ Technical Chat' started by Glen F., Jul 27, 2021.

  1. k-moe

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

    Messages:
    19,064
    Likes Received:
    6,353
    Trophy Points:
    113
    Location:
    The City of Seven Hills
    Honestly, I think that we've all been spoiled by too many years of fuel injected engines in our cars and trucks.
     
    Glen F. likes this.
  2. Glen F.

    Glen F. Active Member

    Messages:
    381
    Likes Received:
    67
    Trophy Points:
    28
    Location:
    Winnipeg Manitoba Canada
    They were, but I'm going to check again tomorrow
     
  3. Glen F.

    Glen F. Active Member

    Messages:
    381
    Likes Received:
    67
    Trophy Points:
    28
    Location:
    Winnipeg Manitoba Canada
    Just checked the oil level because of all the troubles I was having with flooding, and I know I left a little space in the window, but it's gone. Gas in the oil again. Taking the carbs off again tomorrow.
     
  4. Minimutly

    Minimutly Well-Known Member

    Messages:
    1,329
    Likes Received:
    511
    Trophy Points:
    113
    Location:
    West Wales, uk
    This exactly - modern efi has the injectors right by the valves, and only one throttle. A mile apart from our bikes, not to mention a computer controlled idle air valve.
    In the meantime you need to rebuild your petcock ( unless you're leaving it on prime?), and check which carb is dribbling at the float valve - why not do this before removing them? A simple level check, repeated once or twice would no doubt tell you a lot.
     
    k-moe and Glen F. like this.
  5. Franz

    Franz Well-Known Member

    Messages:
    2,506
    Likes Received:
    707
    Trophy Points:
    113
    Location:
    Scotland UK.
    And you can extract codes on efi engines which help in identifying which part of the system is faulty. I am no expert but it is interesting how it works.
     
  6. Glen F.

    Glen F. Active Member

    Messages:
    381
    Likes Received:
    67
    Trophy Points:
    28
    Location:
    Winnipeg Manitoba Canada
    I did rebuild the petcock, and fixed the problem I had before where the thing with the holes in it had moved. I'll check that again as well. No it's not on prime unless someone was playing with it while I was at work.
     
  7. XJ550H

    XJ550H Well-Known Member Premium Member

    Messages:
    12,979
    Likes Received:
    3,742
    Trophy Points:
    113
    Location:
    Great North Woods
    if carbs are overflowing when running it will cause the issues. after you do what is needed to caebs, start and run some before putting on the airbox boots that way you will see if they leak
     
    Glen F. likes this.
  8. Glen F.

    Glen F. Active Member

    Messages:
    381
    Likes Received:
    67
    Trophy Points:
    28
    Location:
    Winnipeg Manitoba Canada
    Just drained the oil and checked the petcock. Oil had some gas in it. Petcock was fine.
    Could it have gone that badly out of sync? Everything was fine before.
     
  9. Polock

    Polock Well-Known Member

    Messages:
    9,751
    Likes Received:
    2,080
    Trophy Points:
    113
    Location:
    Beaver Falls, PA
    the petcock stops the fuel when the bike is off, read that again.
    when the petcock stops the fuel, there isn't enough fuel left in the line to see any change in the oil window, even if the floats let it all drain out.
    whatever fuel went into the crankcase had to go past the petcock.
    ride it and pull the fuel line and route it to a can overnight
     
    Glen F. likes this.
  10. Glen F.

    Glen F. Active Member

    Messages:
    381
    Likes Received:
    67
    Trophy Points:
    28
    Location:
    Winnipeg Manitoba Canada
    I'll give it a try.
     
  11. Glen F.

    Glen F. Active Member

    Messages:
    381
    Likes Received:
    67
    Trophy Points:
    28
    Location:
    Winnipeg Manitoba Canada
    I have the tank off right now, and not a drop comes out. I didn't take it for a ride yet though.
     
  12. Polock

    Polock Well-Known Member

    Messages:
    9,751
    Likes Received:
    2,080
    Trophy Points:
    113
    Location:
    Beaver Falls, PA
    i would think if you were to put two drops of gas in a new bottle of oil and shake it, it would smell like gas
    don't know about that one
    sync has nothing to do with it
     
  13. Polock

    Polock Well-Known Member

    Messages:
    9,751
    Likes Received:
    2,080
    Trophy Points:
    113
    Location:
    Beaver Falls, PA
    i have a theory, you do the test.
    next time you park it, open the gas cap
     
    Glen F. likes this.
  14. Glen F.

    Glen F. Active Member

    Messages:
    381
    Likes Received:
    67
    Trophy Points:
    28
    Location:
    Winnipeg Manitoba Canada
    What will that show me?
     
  15. XJ550H

    XJ550H Well-Known Member Premium Member

    Messages:
    12,979
    Likes Received:
    3,742
    Trophy Points:
    113
    Location:
    Great North Woods
    maybe your vacuum line is sucking fuel,
     
    Glen F. likes this.
  16. Glen F.

    Glen F. Active Member

    Messages:
    381
    Likes Received:
    67
    Trophy Points:
    28
    Location:
    Winnipeg Manitoba Canada
    Can I do that with the tank off the bike?
     
  17. Polock

    Polock Well-Known Member

    Messages:
    9,751
    Likes Received:
    2,080
    Trophy Points:
    113
    Location:
    Beaver Falls, PA
    well after a ride and you park it the gas and gas vapor is right over the hot engine.
    if the vent in the gas cap isn't working right maybe the gas expands and forces it's way through the petcock.
    it's only a theory but it's the only one i got :)
     
    XJ550H and Glen F. like this.
  18. Glen F.

    Glen F. Active Member

    Messages:
    381
    Likes Received:
    67
    Trophy Points:
    28
    Location:
    Winnipeg Manitoba Canada
    Well, I started it up, no problem. Raced to 3000 and turned back the idle screw to 2000. Let it go for a bit and slowly eased off the choke. Had it at half choke for a bit and it slowly died. Waiting for a bit to try again.
     
  19. Glen F.

    Glen F. Active Member

    Messages:
    381
    Likes Received:
    67
    Trophy Points:
    28
    Location:
    Winnipeg Manitoba Canada
    Slaps forehead with palm. I hardly had any gas in the tank. I'm an idiot. LOL Going for a ride and then test the gas cap.
     
  20. Glen F.

    Glen F. Active Member

    Messages:
    381
    Likes Received:
    67
    Trophy Points:
    28
    Location:
    Winnipeg Manitoba Canada
    Petcock was rebuilt with parts from Len
     

Share This Page