Why can't my DIO28 run fast? How to adjust the carburetor! Ask the master to tell me about it!

Friend, according to what you said, I estimate that your car will be overhauled. It may be that there is something wrong with the exhaust and air intake, that there is air leakage in the crankcase, that is, the seal is not good, or that there is something wrong with your crankshaft. Just adjust the carburetor. The left side of the carburetor is adjustable and the right side is adjustable. You can adjust slowly and feel complementary. Do not change the filter. On the carburetor, PZ28 says 28 caliber. Generally speaking, 28-caliber cylinders are over 90. You haven't introduced what your tank is like, and I don't know. Also, if your car doesn't need an oil pump, please put more oil in the tank, preferably a semi-synthetic engine oil above 30 yuan. That's about it. Please add me if you have any questions.