Da Bay Bye
Active Member
Looking for suggestions with my 2 stroke 50 HP Yamaha. Started have some rough running last month that morphed into loss of power at full throttle. Suspected it was a fuel problem so I put some new gas in and it seemed to cure the issue. Next time out it ran great for 30 minutes but then really lost power at throttle to the point the best I could do was about 5 knots.
I replaced the fuel pump, all hoses and tank fittings and disassembled the carbs and cleaned the jets. Now the engine does not get fuel at all. Disconnected the outlet on the fuel pump and nothing pumping. Squeezing the primer bulb will not get hard anymore even with new hose setup. The engine will fire right up if fuel is squirted in the intakes.
Compression check shows 130 on all 3 cylinders with lots of spark at the plug. I found that the hard way after my finger touched the metal part of the pliers putting the boot back on.
Thanks in advance for any suggestions.
I replaced the fuel pump, all hoses and tank fittings and disassembled the carbs and cleaned the jets. Now the engine does not get fuel at all. Disconnected the outlet on the fuel pump and nothing pumping. Squeezing the primer bulb will not get hard anymore even with new hose setup. The engine will fire right up if fuel is squirted in the intakes.
Compression check shows 130 on all 3 cylinders with lots of spark at the plug. I found that the hard way after my finger touched the metal part of the pliers putting the boot back on.
Thanks in advance for any suggestions.