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I have a Coleman generator with B&S 19e412-0107-01 gas engine. It stopped running this past week.
I had changed oil 2 weeks ago to specifications (1.9 qts). It ran great after Hurricane Irene (about 40-50 hrs). I was going to store it, si I put stabilizer in the fuel this past weekend but could not start it.

I took out spark plug and found no spark. I isolated on-off switch and wiring and still no spark. When I took the wires completely off the coil, the engine started. The wires attached to coil are the on-off switch, which I had already checked, and the oil gard low oil sensor. In between the oil gard and the coil, the wires are attached to a metal bracket under the carb.
I am trying to troubleshoot this wiring. The wire I am interested in goes from the coil to the metal bracket under the carb and then wraps around the engine and terminates at the oil gard. What should be the resistance if i check the electrical terminal on oil gard when I put other probe on engine block? Right now I am getting 0 ohms. I double-checked and oil is indeed full.
I am thinking either oil gard or wiring between it and coil is screwed up. Thanks
Dave

Does the motor have a oil alert on it? if so it may just be a little low and that causes no spark.

Rob

@Taxidermist. That is what he is calling an oil gard. The name I use is low oil sensor, since that accurately reflects what it does. Typically this sensor just grounds out the ignition if it senses that the oil is low. Try disconnecting the wire to this sensor and see if the unit will start. If so, the sensor is bad, otherwise further troubleshooting will be required.

Just wanted to update everyone. I put everything back together and ran the unit with the oil sensor disconnected. I then reconnected the oil sensor with the machine running, and it continued to run. I'm not sure if it was stuck and somehow was freed or what. But everything seems to be OK. Thanks everyone.
Dave

themowerguy said:

@Taxidermist. That is what he is calling an oil gard. The name I use is low oil sensor, since that accurately reflects what it does. Typically this sensor just grounds out the ignition if it senses that the oil is low. Try disconnecting the wire to this sensor and see if the unit will start. If so, the sensor is bad, otherwise further troubleshooting will be required.

Click to expand...

Sorry must have skipped over that part while reading his post.

Thank you,
Rob