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Enduro Intake/Carburetion - 2 stroke Jetting, Reeds, Air Filters, etc. |
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#1
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EC 250 2008 jetting problem
Hi guys.. I need some help... I try to tune the jetting.. I Have slide #7
Pilot Jet #45 Main Jet #175 Needle N1EG on the leanest position when I try to set idle I need to have Idle screw totally in and air screw just half a turn from fully closed. If I turn airscrew even 1/4 turn out idle starts to stick so it looks like it is lean. But on the other hand I have oil coming out from exhaust and my powervalve stick closed after riding a while in low RPM. I need to pull WOT to clean it and than it runs good, but lastly I tried to clean it with WOT and it fouled the plug and I needed to change it. Old plug has black electrode but the rest of plug looks totally clean. Can you help me with this? I have already received NEDW needle I ordered so I will try it today |
#2
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I have swaped needle for NEDW... now I have airscrew 1.25 turns out from fully closed... Idle screw 0.5cm from fully closed.. idles perfectly... I have although cleaned PV, it was really dirty... I will test it tommorow.
Last edited by mrfreezer; 08-17-2018 at 06:26 AM. |
#3
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It will all be about finding the right clip position. Then adjusting around that, but that will be 80%.
__________________
'07 EC300 GG '14 TXT250 GG '? 496 CPI Cheetah RZ/RGV hybrid '22 765 Street Triple RS '21 XTrainer '69 Stinger T125 Suzuki '23 TRS 250RR (it's a Trials thing) |
#4
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I would go to 42 pilot get your air screw closer to 13/4 - 2
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#5
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If I put smaller pilot jet I will need less air.. so air screw will be closed more... Am I right?? I have found out, that my engine does not shut down if I turn AS fully in... that would mean I am still lean.. so I need bigger pilot jet... but maybe it is lean because my needle on the leanest position and idle screw turn in just so much, it is letting more air in, but no more fuel... and maybe ma sticking idle is not really sticking idle because of lean condition, but it is lowered idle because of rich mixture... I will try to change pilot jet to 42 and try to turn idle screw out to make it idle just with pilot jet and airscrew set properly and not by lifting the slide...
Last edited by Mr.freezer; 08-17-2018 at 01:01 PM. |
#6
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Wound in means richer.
Sometimes you just have to try the different pilot, find the best position when warm riding it and compare with another adjusted as well.
__________________
'07 EC300 GG '14 TXT250 GG '? 496 CPI Cheetah RZ/RGV hybrid '22 765 Street Triple RS '21 XTrainer '69 Stinger T125 Suzuki '23 TRS 250RR (it's a Trials thing) |
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