You can buy after run at your hobby story or you can use wd40 don't use if you have a filled crank ie puddy in the crank. Make sure you blow air on your glow plug also clean your filter before take both items out. 5-7 drops of after run in both openings or a few sprays then place on bump box give it a few whirls. Put back plug and filter if filter dirty clean with dish soap add filter oil install. Go to YouTube