yet another no idle thread.

[stainlesscycle]

2001 ec300
#7 slide
45 pilot
a/s somewhere between 2 and 2.5 turns out.
175 main
ddk needle on #2
float is adjusted properly


bike runs great pulls hard and relatively smooth.

carb is clean

but:
sounds like it's 4 stroking at 1/8 throttle.
bike will not idle. zips up and down through the rev range pretty clean, but dies instantly when i shut the throttle
idle screw has no effect.
air screw has little to no effect. i can't get it to idle to adjust airscrew. i hold throttle at 1/16 or so, and i turn airscrew till 4 stroking is minimized.

bike used to idle when it was about 30 degrees cooler.... it would at least idle for 20 seconds or so, then die off. now it just dies instantly.

since it's warmer, i've tried 42 pilot and moving needle up and down (it runs slightly better with needle at position 1...but still no idle.) and 172 main. still no idle (and bike wasn't as strong all around...). i don't want to go bigger on the pilot (48), because i think it will 4 stroke more most likely?

so i assume have 2 choices:
different needle
different slide. - now i've tried a leaner slide in the past on my 200, but i didn't like the effect. plus needles are cheaper

so, any suggestions as to needles that may solve my dilemma? i'vew plugged lotsa things into jd jetting chart, and it seems ddl might be the solution. slightly leaner to 1/4 throttle..

[GMP]

Slide for sure, then tune the needle.

[jhendr3702]

Originally Posted by stainlesscycle

2001 ec300
#7 slide
45 pilot
a/s somewhere between 2 and 2.5 turns out.
175 main
ddk needle on #3
float is adjusted properly


bike runs great pulls hard and relatively smooth.

carb is clean

but:
sounds like it's 4 stroking at 1/8 throttle.
bike will not idle. zips up and down through the rev range pretty clean, but dies instantly when i shit the throttle
idle screw has no affect.
air screw has little to no effect. i can't get it to idle to adjust airscrew. i hold throttle at 1/16 or so, and i turn airscrew till 4 stroking is minimized.

bike used to idle when it was about 30 degrees cooler....
since it's warmer, i've tried 42 pilot and moving needle up (but not down...) and 172 main. still no idle (and bike wasn't as strong all around...). i don't want to go bigger on the pilot (48), because i think it will 4 stroke more most likely?

so i assume have 2 choices:
different needle
different slide. - now i've tried a leaner slide in the past on my 200, but i didn't like the effect.

my 01 300 is 42p, 7 slide, 172 main (i think.. sorry... dont remember for sure) cck needle on #2 position.. 2 ish turns out also... depending on the day..
we are about 3500', but our "corrected air" depending on the day can be over 5000.. mine idles fine..

[stainlesscycle]

Originally Posted by GMP

Slide for sure, then tune the needle.

last time i tried a leaner slide (on a 200 - went from #5 to #7) - i ended up losing all the grunt. it revved out, and idled pretty well, but had no balls down low. so i'm a little tentative... maybe i didn't go rich enough on the needle... should i just go to #8 slide?? i hate buying slides that end up being useless....

[stainlesscycle]

Originally Posted by jhendr3702

my 01 300 is 42p, 7 slide, 172 main (i think.. sorry... dont remember for sure) cck needle on #2 position.. 2 ish turns out also... depending on the day..
we are about 3500', but our "corrected air" depending on the day can be over 5000.. mine idles fine..

i plugged your numbers in - you are 20% richer at 1/4 throttle. corrected for elevation... i'm at 1000 feet.

to duplicate you i would need to go 45/175/#3

i've tried that - no idle. the only way to get it to idle is adjusting it at the throttle.

i can adjust/hear the slide hitting the plastic idle screw, so i know it's lifting it......i've turned it all the way out and slowly turned it in hoping to hear it start climbing, but it never does..even bottomed all the way out...

[jhendr3702]

Originally Posted by stainlesscycle

i plugged your numbers in - you are 20% richer at 1/4 throttle. corrected for elevation... i'm at 1000 feet.

to duplicate you i would need to go 45/175/#3

i've tried that - no idle. the only way to get it to idle is adjusting it at the throttle.

i can adjust/hear the slide hitting the plastic idle screw, so i know it's lifting it......

wow... mine has always had the best idle... sounds like a sewing machine.. hope you get it ..

[stainlesscycle]

i forgot to mention - 200+ psi compression - .15 base gasket. pings on anything but minimum 50/50 110/93... timing is retarded 1 degree.

[stainlesscycle]

airfilter is dirty - gonna change that out and see if it helps. i've gotta check the reeds too....

[lankydoug]

Originally Posted by stainlesscycle

airfilter is dirty - gonna change that out and see if it helps. i've gotta check the reeds too....

+1 on checking the reeds.

[Dude]

sounds like a warn out slide orifice to me.