My father-in-law's 35 gallon Sears air compressor is several years old and ran fine. Now the breaker trips after 5-10 seconds of operation. We have checked both the start and run capacitors and they check OK. We also switched breakers with no change. It runs on 110 VAC. With a DMM the motor does not show a ground. Any input is welcome.

i have a mtd riding mower with a 13.5hp tecumseh, i cannot get it to turn over, it cracks or half cranks but it will not turn over. i replaced the battery with a brand new one and nothing. i checked and clean all grounds and connections and nothing i changed the spark plug and nothing i changed the oil? and nothing i checked my key switch and nothing i attempted and i think i did it right, adjusted the valves like the service manual calls and nothing i check the solenoid and its good any help is welcome here is a vid that i made showing what it does.. [url=http://www.youtube.com/watch?v=3WFw_2szKVk]MTD 13.5hp tecumseh riding mower wont start - YouTube[/url]