I saw that you sprayed starting fluid and it started.
A flooding carb will not respond to starting fluid, that will only make it worse.
If you kept spraying the starting fluid, would it keep running?
If so, that is lack of fuel, not flooding. Many times an engine that is starving for fuel will cough back out the carb, and it may spit some gas back, not necessarily meaning it is flooding.
A flooding carb will display black stinky exhaust, run better at wide open throttle, load up and die at idle, overflow and drip gas, poor fuel economy, black foul plugs, will even raise the oil level if ran long enough.
A lean carb will sometimes idle, but not take throttle, cough back, no exhaust smoke.
To answer your question, no a mechanical pump can not make too much pressure.
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Today's Featured Article - Tuning-Up Your Tractor: Plugs & Compression Testing - by Curtis Von Fange. The engine seems to run rough. In the exhaust you can hear an occasion 'poofing' sound like somethings not firing on all cylinders. Under loaded conditions the tractor seems to lack power and it belches black smoke out of the exhaust. For some reason it just doesn't want to start up without cranking and cranking the starter. All these conditions can be signals that your unit is in need of a tune up. Ok, so what is involved in a tune up? You say, swap plugs and file the points....now tha
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