I have a 2001 50hp mercury engine, 2 sroke, boat motor. Does this engine have a valve adjustment?

Question

It has developed a ticking noise when running.

Answer 1

2 strokes have reed valves.....they are not adjustable. The ticking could be a number of things ranging from something under the flywheel to a wrist pin on the piston. Have the engine checked out by a Certified tech.

Answer 2

There are no valves in a 2 stroke. The air is let in by a port in the cylynder wall and exhaust is let out a port on the cylinder wall. The ports are covered and uncovered when the piston moves up and down the cylinder. The ticking noise can be a number of things from low octane, old fuel causing it to ping to a rod knocking. The best thing you can do is determine where the noise is coming from and go from there. Could be bad but could be something very minor.

Answer 3

No valve adjustment if it is a 2 stroke. That ticking noise may be the ignition system firing, when did you last replace the ignition wires?

Answer 4

I would go with a bad or loose plug wire.  A broken reed valve could tap, but that's unlikely.  You could be hearing the fuel pump, but i doubt that as well.  Something may be hitting the flywheel, like if the starter isn't disengaging completely.

Answer 5

It does, but nothing that you can adjust.