Balderdash
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Posts: 117
Minnesota
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Since you already cleaned out the pet0ck and filter...
The vacuum hose from the right side of the carb to the back tube of the petc0ck has to be air tight at both ends and without holes, if it looses vacuum (especially at speed) then the vacuum pressure won't be enough to pull the membrane far enough, the petc0ck wont let enough gas past to feed the engine.
Take the tube off, inspect it for leaks, if it has a leak replace it or cut it off if you can. If there are no leaks, put a little dab of sealant on both plugs and then put the tube back on (make sure the hose clamps are squeezing the hose a little and not just sitting there). If the clamps aren't holding tight you can substitute some trash bag twist tie wires to hold the tube tight around the plug.
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