Hi…I have a 2005 SeaDoo GTX Wake that I purchased used. The engine starts briefly most of the time but immediately quits. Other times it doesn't start at all. Checked the battery cables, cleaned the spark plugs (going to replace - once we find the right ones..on 3rd try). We were thinking of syphoning the gas out but our syphon is too big. Any ideas/recommendations welcome! thank you!