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starts first go

Discussion in 'XJ Technical Chat' started by shamus, Nov 6, 2007.

  1. shamus

    shamus Member

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    I rebuilt my carbs a while ago and only just started getting everything back together. when I start the bike, I justs give it some choke and it starts basically instantly. Now this sounds too good to be true so would there be something wrong with the bike? maybe float levels too high or something? I'm hoping everythings fine, just paranoid becasue its not supposed to be this easy...
     
  2. Gbambeck1

    Gbambeck1 Member

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    Maybe you did it right the first time? You want to rebuild mine?? I'm gonna go with, GOOD JOB!
     
  3. Hired_Goon

    Hired_Goon Member

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    Yep. don't complain.

    When these babies are well tuned it seems like they've fire up before you touch the start button. :wink:

    You've got it right, now go ride it.
     
  4. Gbambeck1

    Gbambeck1 Member

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    I just bought my 82 Maxim (650) and I have to choke it for a couple of mins for it to warm up. It stumbles in between 1500 and 2250 or so when cold. I need to pull the carbs and clean them since the bike has 50,000 miles on it! Seems to run fine otherwise though.
     
  5. shamus

    shamus Member

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    Whats got me worried is the fact that I haven't tuned themn yet, I haven't even synched them
     
  6. RickCoMatic

    RickCoMatic Well-Known Member

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    It can only get better, then ... huh?

    When the Carbs are exceptionally Clean ... good thing happen.
    Instant Starting.
    Powerful acceleration.

    Get them Synced and work on the Pilot Mixtures until you can stand there and watch the Bike Idle at 1000 rpm's.

    That'll be some fun!
     
  7. shamus

    shamus Member

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    Can someone send me a link to the thread about tuning the PIlot Mixtures by ear? I can;t seem to find it. I will eventually (hopefully) get a colourtune but that won;t be for a while...
     
  8. Hvnbnd

    Hvnbnd Active Member

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    By ear no.

    If it runs really good and your happy...., well...., then unless you get some tuneup eqpt or pay someone else to sync and dial in your bike, it'll have to do.

    I must say if it is that good now....just imagine what it will be like all dialed in....!

    Color tune is a good tool but if the bench sync is that close maybe you should look at getting the Colortune.

    I bet the sync isnt dialed right on, but if it really is that close....way to go!
     
  9. RickCoMatic

    RickCoMatic Well-Known Member

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    By ear ...

    Basically, ... Bring OUT the Mixture Screw and Listen for the Idle to Increase.

    Continue OUT as the Idle increases.
    Then, there will be a Plateau ... No further increase ... Followed by a distinct DECREASE in Performance.

    Re-do the set-up and find where the Plateau Starts.

    Do 'em like that across the board.
    That's the START.

    Best Idle + the width of a Nickel.

    Load test.
    Bogging down off-idle means its too Rich
    Backfire means its a little Lean.
     
  10. shamus

    shamus Member

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    I can't wait to get this thing registered, all I can do is idle it on the back verandah at the moment, I don;t have enough room in the yard to ride it!

    All I need now is to flush the brake fluid, change the brake lever and replace a mirror, then it SHOULD be OK for a RWC. After its registered is when the tweaking starts.
     
  11. Gbambeck1

    Gbambeck1 Member

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    awwww come on! take it for a spin around the block! Thats what I do... The neighbors will love you, I promise.
     
  12. shamus

    shamus Member

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    ok....In case noone has been following all my recent posts, the bike is now registered. I had a quiclk fiddle with the Pilot Screws yesterday, and cylinder 1 was unscrewed 6 revolutions.... I've screwed it in a bit now and it goes pretty good, no serious hesitation. When I get a chance, I'll be playing around with the tune on all of them to get it running properly...
     
  13. truckerbikes

    truckerbikes Member

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    shamus if you want to get together for a tune up day i have just bought a set of vacumme gauges and a ycis tool. maybe we can help each other
     
  14. shamus

    shamus Member

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    mine doesn;t have the YICS system.....Thanks for the offer Truckerbikes but I don;t have any spare time at the moment, as soon as I do, I'll run ou to the shed to have another fiddle.... Here's the confusing thing at the moment:

    It starts no worries at all without any choke but the throttle needs to be help open a litle bit to keep it idling until it warms up. The bike will not run AT ALL with any choke. Does that mean its running rich already?
     
  15. truckerbikes

    truckerbikes Member

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    shamus with you living in toowoomba and about 1500 ft above sea level you may have the tuning right already. you may want to take it down to withcott or even gatton let it sit until it's cold and then try again.
    if it does the same then yes it is running rich and will at least need to be colour tuned. best of luck mate
     
  16. shamus

    shamus Member

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    no, the tuning is way out, it seriously bogs down when you accelerate at low revs in 2nd gear ( dunno what revs becasue the tacho broke, but about 20km.h)..... I've ordered a new air filter for it, when that comes in then I'll play with the tune properly. I think the main problem is that I set the idle when the engine wasn;t fully warmed up, I;ve only been riding it to work and back, 3kms each way and I took it for a 10km ride yesterday. When I got back the idle was pretty high so I dropped it down and this morning it started with the choke and idled fine without touching the throttle.
     
  17. truckerbikes

    truckerbikes Member

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    sounds like you have it nailed mate
     
  18. shamus

    shamus Member

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    Quick question: If the engine takes a little while for the revs to drop back after giving the throttle a quick rev, that means its lean, right?
     

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