Mower quits, will run with choke closed

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nickfinity

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I have a Simplicity Broadmoor with a 16hp B&S engine (model 303777). Once in a while I'll be out cutting and the engine will die. It happened over the weekend (only the 2nd cutting this year). If I close the choke it will start up again, no problem, but as soon as I start to open the choke again it will quit. If I let it sit for an hour or two it seems to start right back up and I can open the choke and mow normally.

I've done an ok job of maintenance. I change the oil and filter, fuel filter, plugs, and air filter every spring. I haven't always done the best job of draining all of the gas at the end of the season or getting stabilizer in it right away. Any suggestions? I really appreciate any help.

Thanks,
Nick
 
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nickfinity

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Thanks for the guide. Wonder if some gunk got loose and clogged up the fuel filter. I didn't see anything, but I may change it and clean out the carb and see what happens.
 
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nbest

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Is the gas cap plugged?
 
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nbest

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No. If the vent for the gas tank is plugged a vacuum will form in the tank. This will cause a fule shortage. After it sits for a while air can slowly leak back in and it will start.
 
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nickfinity

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nbest said:
No. If the vent for the gas tank is plugged a vacuum will form in the tank. This will cause a fule shortage. After it sits for a while air can slowly leak back in and it will start.
Click to expand...

The cap is vented, never realized that until yesterday. I blew it out really good and it started right up and ran really good. It hadn't run that good in a long time. Thanks a lot. If it happens again I'll post back, but I'm keeping my fingers crossed that that was the issue.
 
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