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what ever you do only adjust the low first then the high no more than 1/8 low. and 1/8 turn on high max 1/2 turn from factory start.

Turn up the idle. The engine should run with the factory settings. Try a new plug.

I have never had a issue with any nitro engine that wouldn't start and run using the factory settings. The factory setting are set rich. The low was you problem. It's never the high and the fuel always contributes. Don't use car blend fuel! I could never get a Os engine to run on car fuel...

If it's blocked it won't pressurize the tank pushing the fuel to the carb. Stick a small pin or drill threw to make sure it's not blocked. Then block the manifold end and blow threw the line. Air should come out the stinger end.

wd40 is bad. check the pressure fitting on exhaust too.

first when starting a new engine add a few drops of after run oil and spin the engine over without the plug in. Second use a fuel filter if one was not with kit. third when starting a new engine loosen the plug 1/4 turn to make starting easier four prime the engine by blocking the stinger to...