I had a old mini Briggs and Stratton 5 hp engine that I tore off a mini bike. Im not sure of the year of the engine but it dose not have points and has the more modern magnetron but the engine is still pretty old. The engine was run with no air filter but it wasn't run very much. I only took it out of the shed maybe once a month just to start it up and do a burn out or go up and down my drive way once. The engine after a while got noticably harder to start and got to the point where I had to spray starting fluid to get it to start. I decided to restore the mini bike so I took apart the whole engine and cleaned everything and sandblasted the block. The head had no scoring on the inside so I think there was no damage from running it without a air filter. I also got all new gaskets. I let the engine sit with only the internals in my basement for about a month because I put a 6.5 clone in that mini bike. Today I decided to upgrade my Manco Streaker to the 5hp Briggs so I started putting everything back together. Im not sure if I did this right but there were two wires on the coil one to the kill switch and the other Im guessing to the ground. I grounded the one wire to a bolt on the engine witch I scratched the paint off. I have the coil a business cards thickness from the fly wheel. Once I put everything back together and filled it with gas and oil I attempted to start it. It was really hard to pull the pull cord. My dad said the timing may be off but I dont think so. I took out the spark plug and poured a cap full of oil into the piston then pulled it a bunch of times. Its gotten easier to turn over but still a whole lot harder than my 6.5 honda clone and the 4hp robin that was originally on it. I have tried just about everything to get a spark. Do you guys have anything you could think of I could do to get a spark?:shrug::sad: I really want to get this mini bike working soon because my other one is it the process's of getting pit bike forks attached and I want to go riding with my friends.