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Posted

will a fuel pump pulse line cause a lean condition? I have my pulse line tapped into the left side intake of my super cub cylinder, I have burnt this side down twice now.... engine passed leak check with flying colors when I checked it. I ended up drilling the mains and dumps bigger and I also drilled the power jets out bigger to get the thing to quit blowing up. I now have the left side just a tad rich with the power jet wide open, but when I pulled the plug on the right side it was soaked and looked brand new, I slowly turned the power jet in after ea pass until I finally started to get heat on the right plug, it ended up taking 3 turns in on the right side power jet just to get alil heat on the plug. Is this normal? or is there a way to get more fuel to the left side so its not so close to being lean?

Posted

what kind of line is ur pulse line?

 

Is it standard fuel line or a harder braided type line? Is your fitting on the cyl sealed well?

 

I'd say your problem is there somewhere... And have you tried a different fuel pump yet?

Posted

If its ported it might take diffrent fuel need ,on a gas motor it might not be so volital but alky is a diffrent animal,tune it to each cylinders needs if everything else is in order

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