Thank you very much for your collaboration, I inform you of today's experience that I comment on the site "Improve Question"
I want to add the following to clarify and add new experience, the failure made it to gas, the truth is that I always go to gas, that is, I don't know if I had done it by walking on gasoline and today after walking a couple of hours at gasoline they eat so Fail in the same way, the difference is that the instrument indicated that it worked on gasoline, that is, it did not turn off.
I listen to your analysis of the problem. Thanks greetings