Automatic start is slow, why does the engine tremble when you step on the gas pedal?

Slow auto-start, engine jitter when stepping on the gas pedal hard, and common comprehensive problems of the engine.

1. There is dust in the air filter or intake flowmeter, so you can clean or replace the air filter.

2. The throttle body, idle valve and intake branch pipe are carbon-deposited, and they are disassembled and cleaned or sprayed with carburetor cleaner.

3. Check the surface conditions of spark plugs and fuel injectors. Fuel injectors can be cleaned, and spark plugs can be cleaned with blades and sandpaper.

4. Due to the wear and tear of the gasoline pump, the voltage of the gasoline pump is insufficient or the oil pressure is insufficient. Check the working voltage and try to replace the gasoline pump.