Aprilia am6 bogging
Hello,
I downgraded my 2002 Aprilia (AM6 engine) from 80cc to 50cc. I have Dellorto PHBG 19mm carburator, polini free flow air filter, malossi intake manifold and aftermarket reeds remus exhaust with akrapovic muffler. (Previous owner fitted all of those parts so I`m not sure about reeds type and intake manifolds size). So I fitted 50cc piston and cylinder. (I kept old 80cc head, because it didn`t came with the kit. I called the seller and ask him "How can you sell kit without a head and if I can use the one from 80cc kit", he said that I can). Now it boggs really hard. You can`t even ride it. In neutral if I manage to get to high revs by adding little big of trottle flames start to shoot from exhaust. Spark plug is wet. I tried jets from 50 to 72. I have also changed pilot jet (can`t remember the size right now, but I can check tommorow). I tried without air filter and also taping down air filter, but no luck. If I add little bit of throttle I can get to high revs, but if I add more than just a little it boggs down instantly like "booooooooo". It idles fine, there is just a little of difference between choke off and on. If i try to ride as soon as I release the clutch it boggs. Did anyone ever had 19mm carb on 50cc am6 and what jet size did you use? What could be wrong? https://youtu.be/iSDcvXcphS4 Thank you |
Float is stuck or set too high, possibly?
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Quote:
Now I installed #98 main jet, idle jet is #50. I moved clip on needle on second notch from top to bottom, if I move it to top notch it starts cutting in midrange, if I move it lower, it starts to bogg more. It tooked bushing out of air filter, leaving just metal screen in there. Now I can ride at flat, but still can`t climb hill. Take of is much better, it bogs to about 7k RPM. I installed funnel made of metal screen in air filter and I noticed little change in low/mid RPM`S, but big change at high RPM`S, where it goes alot better. However in takes alot to get above 8k RPM in 4th gear and it`s cutting of a little in 1st gear sometimes... Im going nuts with this moped. Could this be too big idle jet? |
It was bogging because of bigger head, it goes ok now.
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