Hi all,
I have a 32cc Tanaka 2 stroke engine... unmodified with about 780 miles on it. I ride almost every day, commuting to work so I've gotten to know its feel and accelleration curves.
In the last couple of days I've noticed that I have a loss of accelleration between 19-22 mph on the flat. Once past this range, accelleration seems normal again up to it's normal 29 - 30mph. Accelleration from 8 mph to 19 mph also seems ok. It's just a "flat" between 19 and 22 mph. Its telling me something is different and needs addressing.
I ride only paved roads. I've checked the plug... looks brown and clean... no oil or excess residue. The gas is the same I have been using over the past week. I've pulled the air filter... nothing especially dirty there. Nothing oily. I run a 50:1 oil mix. I don't bother to prime... just takes two to three pulls with the choke on to get it started and it has never failed to start.
Once this week on the way home, it acted like it was going to cut out on me at a stop light. First time it's ever done that. It sputtered a little bit and I gave it some gas and it kept going. Hasn't done it again that I can remember.
The only thing different is that I have a leaking gas tank. The seam opened below the lower mounting bolt and leaks gas ever so slowly. I've ordered a new tank from GEBE and it should be here in the next couple of days. I put epoxy adhesive over the outside of the tank to quell the leak but it only did a little good. So I only fill the tank with enough gas to get me to work so the level is below the leak when I arrive.
Could this have to do with the level of gas in the tank? I wonder. It is lower than normal. Still... why the flat band in the middle?
It's a puzzlement.
I have not removed the spark arrester... don't know how. Nothing on the engine has been modified.
Any thoughts...
Thank you,
Ross
I have a 32cc Tanaka 2 stroke engine... unmodified with about 780 miles on it. I ride almost every day, commuting to work so I've gotten to know its feel and accelleration curves.
In the last couple of days I've noticed that I have a loss of accelleration between 19-22 mph on the flat. Once past this range, accelleration seems normal again up to it's normal 29 - 30mph. Accelleration from 8 mph to 19 mph also seems ok. It's just a "flat" between 19 and 22 mph. Its telling me something is different and needs addressing.
I ride only paved roads. I've checked the plug... looks brown and clean... no oil or excess residue. The gas is the same I have been using over the past week. I've pulled the air filter... nothing especially dirty there. Nothing oily. I run a 50:1 oil mix. I don't bother to prime... just takes two to three pulls with the choke on to get it started and it has never failed to start.
Once this week on the way home, it acted like it was going to cut out on me at a stop light. First time it's ever done that. It sputtered a little bit and I gave it some gas and it kept going. Hasn't done it again that I can remember.
The only thing different is that I have a leaking gas tank. The seam opened below the lower mounting bolt and leaks gas ever so slowly. I've ordered a new tank from GEBE and it should be here in the next couple of days. I put epoxy adhesive over the outside of the tank to quell the leak but it only did a little good. So I only fill the tank with enough gas to get me to work so the level is below the leak when I arrive.
Could this have to do with the level of gas in the tank? I wonder. It is lower than normal. Still... why the flat band in the middle?
It's a puzzlement.
I have not removed the spark arrester... don't know how. Nothing on the engine has been modified.
Any thoughts...
Thank you,
Ross