will start when i add some starting fluid to air filter,but will not start without doing this,will start after running but when it cools down it will not start? i cecked fuses an were good but dont knot where te main relay is any help will be great ty

 

sorry im new too this site,will not start till i spray starter fluid in air intake then runs good an will restart warm after but when it cools down it will not start,also where is the main relay? ty for te help