Hi guys, I am little concerned about what happened to my first 65cc chinese motor. I use it to do 15miles/day and the engine started to lean out...
I noticed that by the way it started to work after riding for a half an hour.... it started to loose power and Im very concerned about what could fail.
After this the engine won´t started again, started to troubleshoot:
-Checked spark plug (spark ok) but it was dry (ngk b6hs)
-Tried a new one just in case: nothing happened
-Took out carburetor cleaned it up and tested again -> nothing
-Tried with a spare carburetor and then improved very little: Spark plug was wet, but engine was still not starting giving a few plops and i needed to rev. up the motor by pedal...
-Gaskets in good shape....
-Noticed loss of copression but it still was having some (compared it with a brand new motor)
-Also i supose by loss of compression: If i put my hand over intake port (tapping ig) and I move the motor no notice of suction as the newer engine
-After all this: Took the cilinder out: Saw rings in good shape, cilinder with a few deposits of carbon and piston with nice build up of carbon at the top but saw that it was very brown on the sides (don´t know if this was normal)
I have used 50cc / litter all the time. But i like to go fast. so the engine was hardly used. I am concerned of this because there not was any noise that could aware me of an engine failure.
Pics:
Sorry if the photos are not so well. tooked with a cellphone
At this moment I count with new cylinder/gaskets/piston/rings in order to restore it's compression but I did't found any clue with my little knowledge about 2 stroke motors...
I noticed that by the way it started to work after riding for a half an hour.... it started to loose power and Im very concerned about what could fail.
After this the engine won´t started again, started to troubleshoot:
-Checked spark plug (spark ok) but it was dry (ngk b6hs)
-Tried a new one just in case: nothing happened
-Took out carburetor cleaned it up and tested again -> nothing
-Tried with a spare carburetor and then improved very little: Spark plug was wet, but engine was still not starting giving a few plops and i needed to rev. up the motor by pedal...
-Gaskets in good shape....
-Noticed loss of copression but it still was having some (compared it with a brand new motor)
-Also i supose by loss of compression: If i put my hand over intake port (tapping ig) and I move the motor no notice of suction as the newer engine
-After all this: Took the cilinder out: Saw rings in good shape, cilinder with a few deposits of carbon and piston with nice build up of carbon at the top but saw that it was very brown on the sides (don´t know if this was normal)
I have used 50cc / litter all the time. But i like to go fast. so the engine was hardly used. I am concerned of this because there not was any noise that could aware me of an engine failure.
Pics:
Sorry if the photos are not so well. tooked with a cellphone
At this moment I count with new cylinder/gaskets/piston/rings in order to restore it's compression but I did't found any clue with my little knowledge about 2 stroke motors...
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