Snowmobile Repair: 1985 skidoo tundra, quality plug, new spark

Question
I was wandering if you could help me with this I have a 1985 skidoo tundra 250 It started great all last winter and now it is being harder to start once it is runing it runs great but after sitting for about two hours it takes about 8 pulls to start I dont know if I am priming to much and floding it or not priming it   enough it seams to start better if you hold the throtel in abit what is the proper way to start it in very cold and normal cold it has no choke I It has a new spark plug this year and it has oil injetion any help would be great

Answer
Hello Chris,

  Sorry for the delay in my response. I have been on vacation from Allexperts for a few days. It sounds like the Tundra needs it's carb cleaned to start. Other than that, I can about gurantee it's fouling it's plugs. Try using a good quality plug, such as NGK BR9ES, or possibly BR8ES, if that is what you are using now. As far as priming, Doo's can be touchy. Try 3 primes. Then try and start it. On my ski doo with primer, once it starts, I give it 1/4 primes, by pulling out the primer slightly, and the back in. This will help it run cold. Also, check your spark, to make sure it is not orange. If it is, it's time for a new coil. Hope this helps you. Good luck with the sled! Let me know if you need any help. --Arcticatman