Jap 34 cc 2 stroke engine
Series3boy
Mon, 01/07/2019
Hello
I am having alot of trouble getting one of these engines to start. I have a spark and fuel though a rebuilt amal carb.
It did start and run on a 50:1 mix does not want to run on a 32:1 mix recommend in the manual.
I wondered if the seals are leaking on the crank shaft?
Has any any experience of these little engines?
Any suggestions would be great as I am running out of ideas?
Certainly leaking crankcase
Certainly leaking crankcase seals won’t help transferring the mixture to the combustion chamber , but you can try squirting a bit of carburettor cleaner directly into the carb intake . If you are making up your mix using a modern semi or fully synthetic two stroke oil , try changing to a non detergent SAE 30 ; it may help with crankcase sealing.