There possibly could be a air leak somwhere or the fuel valve on the side of the motor could be not fully opening? Did you check the float in the carb? and also does it run fine under load when you prime some fuel into the carb?
Yeah I mean check all your furl lines and if the top bowl isn't filling with fuel could be a partially blocked needle or faulty float inside the carb. But yeah we bought a alixpress fuel pump for ours and worked a treat so far. If you have replaced it it's probably unlikely to be that however...
The carbs look like they had just been taking off and cleaned before i bought it, I still did take one off to see and was very clean however didnt check floats or possibly a blocked needle, however it still starts super easy but then misfires and dies. I might take the carbs off and have a good...
Could be cylinder dropping out? could be your fuel pump too. We had a 2004 yamaha 70hp and would have heaps of power then would drop to 3400rpm, was also hard to start and drank heaps of fuel. We replaced it and it started like a treat and drank much less fuel and most importantly could reach...
We have a put a new fuel pump and hoses and still no fix. I understand that when starting that oil will get pumped in, and yes starting there is a cloud of smoke. However even after 15min of idling it will still misfire ever 2 min or so. and when reving low rpm it will run quite rough and smoke...
Hey guys, I recently got a 2002 90hp two stroke mercury. I have just bought it and had a new thermostat, spark plugs. It starts good however it smokes a fair bit and will misfire causing the outboard to die at idle. I have done the timing and still not much better. Carbs are also very clean...