Briggs 14.5 hp OHV I/C engine model 287707 on a riding type mower.
It broke an intake push rod and I replaced it and then adjusted the valves to the recommenced clearances.
Gapped and replaced the spark plug.
Changed the oil and cleaned air filter.
It sat a few years with old gas in it and so the float needle valve was sticking causing flooding issue.
I removed the carb, cleaned with carb spray. Sprayed all the jets and passages. No flooding issue after that.
I did not turn any adjustment screws on the carb.
Now the problem:
It starts right off with no problems.
It idles at low RPM smoothly and at full choke smoothly but as soon it reaches half to full throttle it starts "hunting" and backfiring then within a few seconds dies.
It will start right up again with minimal choke no problem.
No smoke from exhaust.
Ideas?
Questions?
Please ask as I need to get this running for a family friend that has medical issues and cant push mow their yard.
Thank you!
It broke an intake push rod and I replaced it and then adjusted the valves to the recommenced clearances.
Gapped and replaced the spark plug.
Changed the oil and cleaned air filter.
It sat a few years with old gas in it and so the float needle valve was sticking causing flooding issue.
I removed the carb, cleaned with carb spray. Sprayed all the jets and passages. No flooding issue after that.
I did not turn any adjustment screws on the carb.
Now the problem:
It starts right off with no problems.
It idles at low RPM smoothly and at full choke smoothly but as soon it reaches half to full throttle it starts "hunting" and backfiring then within a few seconds dies.
It will start right up again with minimal choke no problem.
No smoke from exhaust.
Ideas?
Questions?
Please ask as I need to get this running for a family friend that has medical issues and cant push mow their yard.
Thank you!
Backfire/runs rough at high RPM
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