Bad oil pumps are very common in the 50cc 2t motors, I suggest you premix your oil. Its better to know you have the right mixture all the time, I have spent days on warranty repairs of these faulty pumps, now I remove them and tell them to premix. Just do not premix in your tank, get a 2-5 gallon can and mix it all at once. most 50cc will do 45mph running 32:1 very safe and cool running mix. 4 oz per gallon
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