Replaced fuel line hose and priming bulb. Replaced Fuel Filter. Two new spark plugs. New starter relay( last season the old one stuck one time and the starter kept running. (Luckily boat has a battery disconnect switch). Removed fuel line from exit at fuel filter and before fuel pump plenty of gas when you squeeze bulb. Disconnected outlet fuel line on fuel pump to carb and cranked engine. Plenty of gas flowing from pump. Also removed and disassembled fuel pump and all parts were cleaned, were in perfect shape including the one way valves and the diaphragm. Also bench tested pump and it worked find as you push in on the pump plunger which is cam activated.
So it appears I have good clean fuel flow all the way to the carb. Spark was checked and confirmed. Used a bit of starting fluid and immediately ran but once the ether dissipates it stalls out, it will barely idle for sometimes up to 30 seconds. Multiple attempts to idle up or put in gear are quickly met with a stall. Lots of hesitation if you try to increase engine speed.
Next removed carb and placed on bench. Disassembled bowl and inspected float, a little dirty but float and float spring appeared to work fine so I didn't disassemble the spring under the float. Holding carb upright float worked perfectly. Removed high speed jet and cleaned thoroughly and replaced. It's hard to tell if they are clogged but I recall blowing some air through it and carb cleaner and it was clear (inlet hole and two cross holes further down on the threads. The smaller "jet" which is covered with a rubber stopper doesn't appear functional and I was unable to free up to see if it's actually a jet or some kind of plug, it is after all covered with a rubber stopper. cleaned all remaining ports/holes in float bowl and reassembled the bowl. Next took off the plate covering the top of the carb and it was clean, diaphragm intact cleaned all channels and ports and reassembled after testing plunger component. Working properly. Put carb back on and tested. Motor started and again stalled and then wouldn't stay running. So next I drilled out the brass plug covering the air/gas mixture and messed with that incrementally and couldn't get anything substantial, won't stay running. So, not sure what to do next or what I may have missed....Time for a new carb? Thanks and sorry about the long post.
So it appears I have good clean fuel flow all the way to the carb. Spark was checked and confirmed. Used a bit of starting fluid and immediately ran but once the ether dissipates it stalls out, it will barely idle for sometimes up to 30 seconds. Multiple attempts to idle up or put in gear are quickly met with a stall. Lots of hesitation if you try to increase engine speed.
Next removed carb and placed on bench. Disassembled bowl and inspected float, a little dirty but float and float spring appeared to work fine so I didn't disassemble the spring under the float. Holding carb upright float worked perfectly. Removed high speed jet and cleaned thoroughly and replaced. It's hard to tell if they are clogged but I recall blowing some air through it and carb cleaner and it was clear (inlet hole and two cross holes further down on the threads. The smaller "jet" which is covered with a rubber stopper doesn't appear functional and I was unable to free up to see if it's actually a jet or some kind of plug, it is after all covered with a rubber stopper. cleaned all remaining ports/holes in float bowl and reassembled the bowl. Next took off the plate covering the top of the carb and it was clean, diaphragm intact cleaned all channels and ports and reassembled after testing plunger component. Working properly. Put carb back on and tested. Motor started and again stalled and then wouldn't stay running. So next I drilled out the brass plug covering the air/gas mixture and messed with that incrementally and couldn't get anything substantial, won't stay running. So, not sure what to do next or what I may have missed....Time for a new carb? Thanks and sorry about the long post.