Hello i am new to the forum. i have purchased a used scrambler 400 2 stroke 2x4 that needed the water pump seals done. i changed the seals and now have it re assembled. i can not get it to start with the pull cord now. the bike was running before i took it apart. I was wondering if maybe it is to cold to start right now (live in canada) any ideas of where to look first would be much appreciated.