Will Fuel Consumption Be Higher After an Engine Overhaul?
2 Answers
Fuel consumption may be higher to some extent after an engine overhaul. Here is a detailed introduction about car engines: 1. Overview: A car engine is a device that provides power for the vehicle, determining its power, economy, stability, and environmental performance. Depending on the power source, car engines can be divided into diesel engines, gasoline engines, electric vehicle motors, and hybrids, among others. 2. Others: Common gasoline and diesel engines belong to reciprocating piston internal combustion engines, which can convert the chemical energy of fuel into the mechanical energy of piston movement and output power. Gasoline engines have high speed, small mass, low noise, easy starting, and low manufacturing costs. Diesel engines have a large compression ratio, high thermal efficiency, and better economic and emission performance than gasoline engines.
I've seen many cases of engines after major overhauls where fuel consumption can either increase or decrease. The key lies in the quality of the repair. For instance, newly replaced piston rings with better sealing can theoretically improve fuel efficiency. However, if the crankshaft bearing clearance isn't adjusted properly or the timing belt is off by a tooth, the engine load increases, leading to higher fuel consumption. The initial 3,000-kilometer break-in period after the repair can also temporarily increase fuel consumption as new parts need to wear in smoothly. It's advisable to record the actual mileage for two full tanks of fuel post-repair. If the fuel consumption is more than 10% higher than before the overhaul, a recheck of the assembly precision is necessary. Additionally, avoid flooring the accelerator during daily driving, as a new engine requires gentle break-in.
