Moped question

[Iowa Guy]

My son's moped does not seem to be using any oil. It is a 2003 Derby that has a seperate oil tank and then is supposed to mix the oil and gas automatically but the oil never needs to be filled. Sounds to me like this could be a problem eventually.

 

What should I check first with this?

 

Iowa Guy

[cliffno350]

it should use some oil most 2 strokes require a 32 parts gas to 1 part oil mix, I would make sure its a 2 stroke and then check lines from oil tank to the oil/injection pump, may have to prime pump by forceing oil into itthey can cavitate and suck air make sure oil lines are tight to pump so it cant suck air. I am not familar with a darby but have worked on quite a few different 2 stroke scooter/mopeds. let us know what ya find.

[venturejockey]

My son's moped does not seem to be using any oil. It is a 2003 Derby that has a seperate oil tank and then is supposed to mix the oil and gas automatically but the oil never needs to be filled. Sounds to me like this could be a problem eventually.

 

What should I check first with this?

 

Iowa Guy

 

If it's a 2 stroke and it isn't getting any oil it will be sooner than eventually. Those 2 stroke pumps don't meter much oil but they pump a little. If it isn't pumping the motor will sieze up pretty soon.