Member Contributer Lannyl81 Posted January 6, 2020 Member Contributer Share Posted January 6, 2020 Installed a stage 1 jet kit into my '97 due to using a slip-on with the dB killer plug out, to take care of the stumbling I had at take-off. I set the pilot screws at 2 turns, did the synch, but not the idle drop, do not have the tach for that. On the test ride went to fuel-up, distance of about 10 miles, engine up to temp, stopped at fuel station, engine off for several minutes as I fought with the pump not taking my credit card....gave-up and went to go to another pump, hit the START button, engine turned-over as usual, but would not catch/fire. Tried multiple times, no go...finally gave the throttle a twist with START button down and engine fired-up. Went to another pump, got fuel, this time I twisted the throttle with START button down and engine fired right up. Sooooo is this the pilot screw setting incorrect? Oh and bike ran GREAT!....no more stumble at take-off....yeah! Link to comment Share on other sites More sharing options...
Member Contributer RC36B Posted January 6, 2020 Member Contributer Share Posted January 6, 2020 Fix one problem and the fix creates another new problem... great 🙂 So no change to idle jet - only main jet and needle. Right? Assuming you changed nothing else and the carb sync was done as per Honda manual (I further assume only very small changes (1/10 turn max) was needed to sync carbs). Did you record the original position of mixture screws? I would check that all mixture screws work and are about correct. Adjust by listening for change in RPM. I can write a simple "procedure" 🙂 Link to comment Share on other sites More sharing options...
Member Contributer Lannyl81 Posted January 7, 2020 Author Member Contributer Share Posted January 7, 2020 Idle jet changed. I did record the original mixture screw positions, but put all to 2 turns out per instructions. I checked my '97 Service Manual and it has a different initial setting for the mixture screws than the 94-96 SM.....so I turned all screws in to about 1.5. Cold engine started right up....cold being about 50°F air temp. Idle was spot-on at 1k after a few minutes, choke off of course. Will need to re-synch...will do that today. Oh and yes, very small changes to the synch screws. And getting to the fuel mixture screws.....#1 & #2 easy.....#4 not too bad....but #3!....would never be able to get to it with engine running without burning a lot of skin....not with the tool I have anyways. Link to comment Share on other sites More sharing options...
Member Contributer RC36B Posted January 8, 2020 Member Contributer Share Posted January 8, 2020 On 1/7/2020 at 3:10 PM, Lannyl81 said: Idle jet changed. I did record the original mixture screw positions, but put all to 2 turns out per instructions. I checked my '97 Service Manual and it has a different initial setting for the mixture screws than the 94-96 SM.....so I turned all screws in to about 1.5. Cold engine started right up....cold being about 50°F air temp. Idle was spot-on at 1k after a few minutes, choke off of course. Will need to re-synch...will do that today. Oh and yes, very small changes to the synch screws. And getting to the fuel mixture screws.....#1 & #2 easy.....#4 not too bad....but #3!....would never be able to get to it with engine running without burning a lot of skin....not with the tool I have anyways. 1. Maybe I misunderstand what you write... You don't need to re-sync carbs because of change of jets or adjust to mixture 2. After you leaned the mixture screws (1/2 turn in) did you try a hot start? 3. Yeah - without the angled screwdriver you get to the point where you throw things through closed windows... Link to comment Share on other sites More sharing options...
Member Contributer Lannyl81 Posted February 2, 2020 Author Member Contributer Share Posted February 2, 2020 Sorry for long delay here; have continued to try different fuel mixture screws settings....1.5 to 2 turns out gives best idle sound. I go ahead and re-check synch each time....just because. Link to comment Share on other sites More sharing options...
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