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Generac Power Systems Generac 5518 8 Kw AirCooled Standby Generator Questions & Answers
Over crank
Over crank is just that, cranking and cranking for a timed period without a run signal. Make sure the fuel solenoid is opening and you have the correct gas pressure. Too much pressure can stop it opening. Then check you have a spark at the plugs, this will eliminate ignition, and you can re-focus on the fuel system. You didn't say it was LP or Nat gas
Generac 5793 Ix 2000 surging
It sounds as though there is an issue with the carburetor. If the unit is "surging" with no load I would recommend thoroughly cleaning the carb. It would also be a good idea to test the fuel pump. Per Generac you need to disconnect the fuel line leading to the carb and pull the starter rope over to see if adequate fuel is flowing. If none of this is the issue try testing the stepper motor on top of the carb. If you unclip the wire and use an OHM meter all wires should test at 150 ohms. to test place on test lead on the blue wire and move the other lead to the remaining four wires. The should all ohm out to roughly 150ohms. if this is not the case you need to replace the stepper motor.... Before you do any of this you should check for fresh fuel, a good spark plug, and proper compression.
MODEL 60511 BETTERY GOES DEAD
Check the charging voltage, while running should be 14.5VDC or higher but not more than 15.5VDC. If charging circuit is bad, you can use a trickle charger or repair the engines charging coils and regulator.
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