1976 75 hp
starts pretty good. idles good, drives half throttle good. once you push the throttle to full the engine continues at its half speed and seems bogged. it does run, just won't open up.
when I bought it, I noticed the main fuel line came in the bottom carb. and the gas hose bib was so close to the bottom cowling that the fuel line was pinched. I moved the bottom carb to the top to help this pinch issue. that made no change in the peformance.
I have taken all three carbs apart and cleaned them, although they didn't seem dirty or varnished.
I have squeezed the gas primer bulb while it was bogged down, and there was no change in performance. So I am sure its not the fuel pump.
I have changed the spark plugs, bottom of the three seemed more dirty than the others but nothing too crazy.
I have also replaced all the fuel lines on the carbs. and the fuel tank/hose is new
What should I do next?
starts pretty good. idles good, drives half throttle good. once you push the throttle to full the engine continues at its half speed and seems bogged. it does run, just won't open up.
when I bought it, I noticed the main fuel line came in the bottom carb. and the gas hose bib was so close to the bottom cowling that the fuel line was pinched. I moved the bottom carb to the top to help this pinch issue. that made no change in the peformance.
I have taken all three carbs apart and cleaned them, although they didn't seem dirty or varnished.
I have squeezed the gas primer bulb while it was bogged down, and there was no change in performance. So I am sure its not the fuel pump.
I have changed the spark plugs, bottom of the three seemed more dirty than the others but nothing too crazy.
I have also replaced all the fuel lines on the carbs. and the fuel tank/hose is new
What should I do next?