JohnR66 wrote:

I have a 3.5 hp B&S "classic" engine. While mowing, it started sputtering
and surging like it was about to run out of gas but it has plenty. It does
this in any throttle position. I took off the carb and cleaned the strainer.
It had some junk, but wasn't very dirty. After I put the carb back on, it
ran fine for 3 minutes then started surging again. One thing I noticed is
that it will run smooth seconds before it runs out of gas. Sounds like a
carb problem, but I'm not sure.

Thanks for any help.
John



You didn't mention checking the air cleaner. Did you? If not, maybe it's
gunked up and "choking" the engine? Try running it for a bit with the
air cleaner removed.

Jeff

--
Jeffry Wisnia

(W1BSV + Brass Rat '57 EE)

"Truth exists; only falsehood has to be invented."