All,
I have a headscratcher.... Went through the carb, cleaned every port/jet with small torch tip cleaner and spray and compressed air.
Motor starts as it should, when I throttle it up it bogs down, occasionally backfires back through the carb, and will die if I don't throttle it back down. Note this is on the test stand not under a load. If I ease into the throttle, it will perform seemingly as it should. Changing the air screw does seem to slightly help by richening the fuel air mix up, but don't fully eliminate the problem.
Also, note when I throttle it up and it coughs and sputters, I'm not "hammering" it, just a normal throttle up process.
The issue points towards a lean condition, but I can't/haven't found it. OR I am overlooking something.
The motor is in great condition and well kept - for the record.
Thanks in advance!!!
I have a headscratcher.... Went through the carb, cleaned every port/jet with small torch tip cleaner and spray and compressed air.
Motor starts as it should, when I throttle it up it bogs down, occasionally backfires back through the carb, and will die if I don't throttle it back down. Note this is on the test stand not under a load. If I ease into the throttle, it will perform seemingly as it should. Changing the air screw does seem to slightly help by richening the fuel air mix up, but don't fully eliminate the problem.
Also, note when I throttle it up and it coughs and sputters, I'm not "hammering" it, just a normal throttle up process.
The issue points towards a lean condition, but I can't/haven't found it. OR I am overlooking something.
The motor is in great condition and well kept - for the record.
Thanks in advance!!!