Hi, I'm new to the forums, but have been browsing looking for answers for a couple of days.
I have a 20 HP two cylinder Briggs and Stratton with dual magnetos. When I first tried to start it this year, it wouldn't start. I thought it might be gas, so I put in some new gas, tried spraying some ether, and a couple of other things, but it wouldn't start. It appeared that I was not getting spark on the plugs so I replaced them. After that, it started and seemed to be running fine, so I prepared to mow the lawn. Then after running for about a minute and a half, it just stopped. After that, it wouldn't start again. I took off a magneto lead to test the voltage and it showed 12ish volts when cranking. Surprisingly, the mower also started. I then tried plugging that magneto back in and unplugging the other one. Again, the mower started. Plug them both in, won't start. I'm pretty sure that when the magneto is unplugged that guarantees that the cylinder doesn't fire, but the mower did not even seem to be running rough.
Anybody have any ideas what I might have going on?
I have a 20 HP two cylinder Briggs and Stratton with dual magnetos. When I first tried to start it this year, it wouldn't start. I thought it might be gas, so I put in some new gas, tried spraying some ether, and a couple of other things, but it wouldn't start. It appeared that I was not getting spark on the plugs so I replaced them. After that, it started and seemed to be running fine, so I prepared to mow the lawn. Then after running for about a minute and a half, it just stopped. After that, it wouldn't start again. I took off a magneto lead to test the voltage and it showed 12ish volts when cranking. Surprisingly, the mower also started. I then tried plugging that magneto back in and unplugging the other one. Again, the mower started. Plug them both in, won't start. I'm pretty sure that when the magneto is unplugged that guarantees that the cylinder doesn't fire, but the mower did not even seem to be running rough.
Anybody have any ideas what I might have going on?