Hi all.last week i was drove to a spot to ride dirtbikes and after hours later i load up the bikes only to have a crank no start issue. I gave it a second and crank again long crank than finally started but didnt run that smoothe on way home. Next morning i come out to start and crank no start again so i put some fuel in and it started and drove rough for a mile than stalled out and i towed it home. This weekend i will start to diag the problem just wondering if i can get some ideas from here before than maby someone has a few pointers or maby a link to another similar post. Obviously i plan on cleaning the tank and fuel system with good fuel to start and replaceing the spin ons. Now heres a description its a 1970 amgeneral that ive been running waste trans and steering fluid buy not waste but new fluids cause i get them alot lol BUT during hurricane sandy i put alot of crappy oil in the tank that someone gave me and had no problems till i ran the tank low and had this problem. Thanks guys for reading i will update as time goes on.