Cheetah Black King Kong engine has just been overhauled and shivering.

If it is a 4G64 engine, check the balance shaft! The balance shaft is the gear shaft in the lower right corner where the timing belt passes. Look at its mark. It's wrong. You should carefully observe the position of the shaft on the left side of the engine (the direction of the car), find a small hole, and insert a 4MM thick iron wire, about 10CM long, into the small hole! Then, mark the crankshaft and camshaft correctly, do not install the belt for the time being, then turn the gear of the balance shaft with one hand and feel the position of the wire with the other! When the marks are aligned, the wire will sink because there is a groove on the shaft! Feel that feeling! If you aim at it, fasten the belt!