My 'o7 has to crank for several seconds to start. Cold or warm engine. When I picked it up in N.J. a week ago it started fine. After I got it home I changed the oil, filter and will change the fuel filter before trying anything else. I finally found the fuel filter location under the air cleaner. I was also wondering if there is a procedure to bleed the air out of the fuel system after changing the filter. I also changed the air filter. Thanks.