It's a possibility that the vacuum petcock could be the culprit. When ur on the gas and slam on the brakes you cut the vacuum which causes a fuel drop. Your also saying it won't start again until you give it some gas which to me would indicate the carb isn't getting good fuel flow. Also the petcock could be clogged since you said it sat for 2 years. Also try turning the fuel mixture out maybe a little more for more fuel. Last thing to check for fuel would be the carb float level.
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Hammer head Single seater know as herbie
under construction
Aluminum fuel tank, aluminum wheels, custom fuel/cargo rack, entire rewire, trail tech vapor, ported big valve head, a12camshaft, 12 gram sliders, straight intake, kirkey wide seat, front end extension. 4 point harness, welded cage. Hammerhead exhaust.
Blade Single Seater Restore
welded cage, engine build, new wiring harness/electric box, spun aluminum fuel tank.
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