One week ago, the Tohatsu 8hp 2-stroke started and ran well. Now she won't.
What really puzzles me is:
- She does not respond to starting spray into the carb (no reaction at all), but ...
- She will run smoothly and confidently for 5sec when fuel is sprayed directly into a cylinder via a spark plug hole.
My first thought was that the only thing that could block starting spray in the carb from getting through, are bad reed valves.
So I took off the carb and removed the reed valves - they look perfect, springy and seal well. So it's not them.
That's where I am now. Not sure what to try next - need help.
Extra Background:
Non-starting symptom appeared after dropping the lower leg, replacing the impeller, transporting her in the boot of a car for a day, on her back.
When refusing to start, I did the usual :
- fresh fuel and clean fuel line
- rebuilt carb with clean jets, float good, float needle valve good
- compression tested ok
- new plugs, good blue spark (jumps 5/16 air gap with plug tester)
The fact that she will run smoothly and confidently when fuel is sprayed directly into a cylinder suggested to me that
the electrics are likely ok.
What really puzzles me is:
- She does not respond to starting spray into the carb (no reaction at all), but ...
- She will run smoothly and confidently for 5sec when fuel is sprayed directly into a cylinder via a spark plug hole.
My first thought was that the only thing that could block starting spray in the carb from getting through, are bad reed valves.
So I took off the carb and removed the reed valves - they look perfect, springy and seal well. So it's not them.
That's where I am now. Not sure what to try next - need help.
Extra Background:
Non-starting symptom appeared after dropping the lower leg, replacing the impeller, transporting her in the boot of a car for a day, on her back.
When refusing to start, I did the usual :
- fresh fuel and clean fuel line
- rebuilt carb with clean jets, float good, float needle valve good
- compression tested ok
- new plugs, good blue spark (jumps 5/16 air gap with plug tester)
The fact that she will run smoothly and confidently when fuel is sprayed directly into a cylinder suggested to me that
the electrics are likely ok.