Okay here's my problem. I have a Briggs and Stratton engine on my Toro Zero Turn riding mower. One day it decided just not to start anymore. I first checked the fuel, no water (at least non visible when I drained some off). I changed the fuel filter. I changed the spark plug. It does generate a spark when cranking. I tried putting a teaspoon of gas in the cylinder and then cranking it but it doesn't catch. The starter seems to be working fine as does the ignition. I thought it might be a carburator problem, but I would have thought the gas in the cylinder would at least make the engine cough a bit. Any suggestions? :wall:

Hi guys :) Ok, I have a question about oil dumping into a carb. On a Ariens rider with the brigs 19.5hp engine: Mower sat for a couple years. Changed batteries, added gas, and it ran great, except float was s a little sticky (it would overflow). Parked it for a couple months, went to start it and it was dumping oil ( and i mean dumping, you might could have poured it as fast, but I doubt it) into the breather. Finding a trustworthy mower mechanic in my area is impossible ( an example would be my Husqvarna 60" commercial zero turn with a Kohler 25 engine was lacking power. Took it to the authorized Husky service center and they tell me it has metal in the oil and needs engine replaced. How they found this out, i'm not sure as the oil level was the same and it had not been changed nor the filter removed. Regardless, I went and got it and a friend noticed the muffler had come apart inside and was blocking the exhaust hole. I cut it out and it runs great again). I could give more examples, but it's getting to be a long post already lol My research on this subject (back to the Ariens) shows most say a head gasket. This mower might have a total of 10 hours on it, if that. It did sit for 2 years, hence the sticky float. Amazingly, besides the float sticking, the carb, tank, etc, were fine, as far as I could tell, running-wise. It didn't miss, cut-out, or anything. I can't believe the head gasket is bad. A friend has a ExMark zero turn with a Brigs 21 or maybe 23 hp engine and 127 hours. Always maintained per recommended schedule. His sat for a year or so and he said his is doing the same thing. Suggestions? BTW, thanks in advance.