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Thread: just rode the atc 500 and need alittle help

  1. 09-04-2006, 10:22 PM #1
    gasmask
    gasmask is offline Registered User First time rider
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    just rode the atc 500 and need alittle help

    i must say the a 1- 3 overide transmission is the way to go. love it. however i'm having alittle hesitation when starting off. when i shift to 2nd it clears up until i'm wot the it loose some of it power. i open the spark plug gap from .018 to .021 and it seem to help out but the problem slacked up alittle. i'm using a 95 cr 250r ignition system with a icat. [go to ebay and type in icat and that's what i got]...is the nology ignition worth the money or do i need to advance my time abit? it'a a 44mm lectron alky carb...
    Last edited by gasmask; 09-04-2006 at 11:39 PM.
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  2. 09-05-2006, 12:57 AM #2
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    hrc85250r
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    you need to lean out your main....also you cant punch it as soon as you dump the clutch with alky, youre pumping to much fuel into the cylinder, ease into the throttle out of the hole, take about 1/4 of a second to give it full throttle. you will figure it out. you should be all set with that ignition as long as you have it timed right.
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  3. 09-05-2006, 04:40 PM #3
    gasmask
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    as i opened up the spark plus it got alittle better so i ordered a nology coil and wire today. there spark plugs are $9. and some change....i wont be buying any of them...
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  4. 09-05-2006, 05:33 PM #4
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    Billy Golightly
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    What heat range of plug are you running now Ralph, 8?
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  5. 09-05-2006, 05:35 PM #5
    Pete
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    I'm not familiar with what setup youre running, but I am pretty familar with alcohol setups. Are you running a boost jet, and what kind of carb?
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  6. 09-05-2006, 07:49 PM #6
    gasmask
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    Quote Originally Posted by Billy Golightly
    What heat range of plug are you running now Ralph, 8?
    ngk br8es and b8egv
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  7. 09-05-2006, 07:53 PM #7
    gasmask
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    Quote Originally Posted by Pete
    I'm not familiar with what setup youre running, but I am pretty familar with alcohol setups. Are you running a boost jet, and what kind of carb?
    91 cr 500 ported and polished, head rechambered, rad valve and a 44mm lectron alky carb w/ power jet. as i turned the metering rod to richen it/ it got better along with opening the spark plug from .018 to .021.
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  8. 09-05-2006, 08:09 PM #8
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    ATCwithdrawals
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    whats the spark plug look like after a run at wot?? sounds like a fuel problem for sure.
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  9. 09-05-2006, 08:23 PM #9
    gasmask
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    Quote Originally Posted by ATCwithdrawals
    whats the spark plug look like after a run at wot?? sounds like a fuel problem for sure.
    top part is light brown but the bottom is white.
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  10. 09-05-2006, 08:49 PM #10
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    hrc85250r
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    that is extremely lean at WOT, richen up the powerjet. you want it to be completely white while being slightly wet looking.
    1985 Honda ATC250R drag trike with s/t kit and full drag CR hybrid motor and drag chassis...
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  11. 09-05-2006, 08:59 PM #11
    Pete
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    I never had any luck reading spark plugs when running methanol. It sounds lean to me as well. Are you hearing any detonation in the motor at all?
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  12. 09-05-2006, 10:01 PM #12
    gasmask
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    Quote Originally Posted by Pete
    I never had any luck reading spark plugs when running methanol. It sounds lean to me as well. Are you hearing any detonation in the motor at all?
    what type of sound is that?
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  13. 09-05-2006, 10:08 PM #13
    Pete
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    it sounds like a little demon tinking on the side of the cylinder with a ball peen . If you pull the head you'll see what looks like the edges of the piston and squish band are sandblasted.
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  14. 09-05-2006, 10:50 PM #14
    gasmask
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    Quote Originally Posted by Pete
    it sounds like a little demon tinking on the side of the cylinder with a ball peen . If you pull the head you'll see what looks like the edges of the piston and squish band are sandblasted.
    what about removing the exhaust pipe and looking in the flange?
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  15. 09-05-2006, 11:08 PM #15
    Pete
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    you can't tell anything from that to do with detonation.
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