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My 20kW Kohler home generator (nat gas) cranks but won't start. Definitely getting fuel. Everything checked in October with new spark plug. Maybe a setting?
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www.youtube.com/watch?v=CT9u64dZna0
Apr 28, 2012 - Uploaded by Jeremy vanEyk
Brand new Kohler Generator Test cycle issue. ... Oh, and Mike, good call on the carb--that happens on some 20RES models. ...Indicates Locked Rotor (Lr). ... I'm on my second 20 RES-L,home depot swapped out the 1st one. ... Kohler 20KW RESA Whole House Standby Electrical Generator - Duration: ...
there are too emergency stop sensors on generators
one is over load
the other is low oil level in the sump (Low oil pressure)
That sensor is known to trigger and activate the emergency stop so check it out after you check the oil level in the sump
If you have spark and compression and it not firing then you must not have fuel. the fuel is fed from the demand regulator thru the intake independent for each cylinder. Check the intake and make sure that the NG/LP pin is all the way to the NG side.
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
The governor and / control maybe your issue. Also if you have the electronic governor model, check the speed sensor screwed in near the fly wheel, it should have approx 2VAC on it during crank.
Are you pulling the plug to check for wetness after cranking it a few times, WITHOUT using the starting fluid? Also, I would recommend using carb cleaner in place of the starting fluid. Starting fluid runs the engine VERY hot for a brief time and can possibly damage rings, valves, and aluminum parts.
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