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2/20/2015
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GB
Tom711
4/11/2018 10:10am
4/11/2018 10:10am
I ran Avgas (100LL) mixed 50/50 with super unleaded pump fuel today in my sons KX 85 and it spluttered/popped pretty bad on top end, I’m guessing (hoping) it’s a lean main? It was unusually cold today and we were riding a deep sand track so these could have always contributed.
Is it common to have to richen the jetting up with Avgas?
I went up one size on the main and the problem still seemed to be there although maybe not quite as bad (it’s quite difficult to hear when it’s someone else riding and there are other bikes going round as well). The only other bigger jets I had with me were quite a lot bigger so that’s where I had to leave it for the day.
Is it common to have to richen the jetting up with Avgas?
I went up one size on the main and the problem still seemed to be there although maybe not quite as bad (it’s quite difficult to hear when it’s someone else riding and there are other bikes going round as well). The only other bigger jets I had with me were quite a lot bigger so that’s where I had to leave it for the day.
I can get it around the same price as premium pump fuel so it seems a little too good to be true at the moment.
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