70cc Head/Engine Heating

[saboor73]

I called my friend and showed him the bike, he said problem is with carburetor, head and carburetor are not matching. You rejetted it in hot weather it was fine as now weather is cold its not matching with head and causing heating. On other hand head is also weak and losing its performance.

His advice is not to do anything and run it till it completely goes down then repair complete engine at zero with new piston, new head and carb.

1 question do hot/cold weather matter's?

Your friend is wrong hot or cold weather it does matter much for carb to head fitting

[asad12347]

and i just checked the oil bottle its 20W-50 GTX

[saboor73]

and i just checked the oil bottle its 20W-50 GTX

The old designed cd70e engine is more than happy with 20w-50 don't worry about oil

[asad12347]

Your friend is wrong hot or cold weather it does matter much for carb to head fitting

then i guess the problem is with the Carb.
one question i have in mind if its a problem with piston or ring, does the bike goes to 100 110? runs for a month & half?

[pwuser169503989513]

bro i have been using Havoline since long. But my China bike was working well, its been month my bike was heating up, There was no problem with oil setting,tappet settings, i changed my cluch plates, but the heating problem is still there,
Are you sure there is problem with engine oil ??

[Hassan1991]

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