whaler13bf25
Recruit
- Joined
- May 29, 2013
- Messages
- 1
I have an 2005 Honda 25 shortshaft. It's really a bit of a mess being three cylinders and 3 carburetors for only 25hp.
The motor runs ok the way it is, starts instantly and revs up decently. When adjusting the carburetors, i discovered that the bottom cylinder adjustment had no effect whatsoever. When running, I pulled the spark plug cap off and there was no drop in RPM, and it revved up just as it normally would. It had the same response with bottom spark plug taken out. At idle the motor has alot of vibration, quite wobbly really.
Things I have checked so far:
It definitely has spark (I felt it shock me)
Compression is good (100 psi on all cylinders)
I took off the bottom carburetor and the jet is clear, though I don't know much else about carburetors.
I have this motor on a 13 foot whaler, yet at full throttle it pushes the boat at 23 knots on only the top two cylinders. How is this possible?
The motor runs ok the way it is, starts instantly and revs up decently. When adjusting the carburetors, i discovered that the bottom cylinder adjustment had no effect whatsoever. When running, I pulled the spark plug cap off and there was no drop in RPM, and it revved up just as it normally would. It had the same response with bottom spark plug taken out. At idle the motor has alot of vibration, quite wobbly really.
Things I have checked so far:
It definitely has spark (I felt it shock me)
Compression is good (100 psi on all cylinders)
I took off the bottom carburetor and the jet is clear, though I don't know much else about carburetors.
I have this motor on a 13 foot whaler, yet at full throttle it pushes the boat at 23 knots on only the top two cylinders. How is this possible?