What is the normal range for engine tachometer readings?
1 Answers
Engine tachometer readings between 2200 to 2500 RPM are considered normal. The reasons for unstable tachometer readings include: 1. Oil accumulation and carbon buildup in the throttle body; 2. Dirty intake passages; 3. Fuel line blockages, particularly in the fuel injectors; 4. Malfunctions in the intake manifold. The function of an engine is to convert the thermal energy from gasoline or diesel into mechanical energy by burning the fuel in a sealed cylinder, causing gas expansion that drives the pistons. The main components of an engine include: 1. Valve train; 2. Crankshaft and connecting rod assembly; 3. Ignition system; 4. Cooling system; 5. Lubrication system; 6. Starting system; 7. Fuel supply system. Engine maintenance methods include: 1. Using qualified engine oil; 2. Using qualified coolant and antifreeze; 3. Regularly cleaning radiator scale; 4. Periodically removing engine carbon deposits; 5. Regularly replacing the three automotive filters; 6. Maintaining reasonable engine speeds.