Briggs 31R headache...

[slomo]

Carb float height excessive?

 

[StarTech]

Ok so most everything mechanical sounds like it's working as normal.

Dump the gas and try some fresh E-0 unleaded juice.

Wonder if someone, has been in the carb with a welding torch tip cleaner enlarging the main jet/s?

Choke staying wide open once warm?

Look the fuel is fresh and I am the only one been in the carb. And yes the dang choke is fully open. Also main nozzle/jet and air bleed jet have been remove and make they are clean.

Carb float height excessive?

No; unless, you call dead level [parallel to carb body] excessive.

BTW the needle tip has no wear. And it takes a pin punch to even get the pin out. As that is how I got to the needle and seat. Pressure test of 10 psi held over 30 minutes. No fuel in the plastic float.

might as well give these numbers before someone complains.

 

[StarTech]

Well its not the muffler, ordering a few crankcase gaskets so I check the internals. Maybe it is the ACR or loose cam lobe. Got to be something I am missing. The last I open one these engines was back in 2024; hence, why I don't the gasket.

The darn thing is actual shooting a flame out the carb at times.

 

[Auto Doc's]

Coil kill wire diode gone/going bad? Unplug the coil ground lead to see if problem still exist.

 

[StarTech]

Coil kill wire diode gone/going bad? Unplug the coil ground lead to see if problem still exist.

Been there Done that.

I just calling it and returning the mower and the customer's money then writing off all the parts used in the troubleshooting. No point keep throwing parts at it per say. First engine in 18 yrs that out did me and I have had some bad problem makers over the years.