1. Pre-ignition: Unlike petrol, diesel has a higher ignition point. When diesel is used in a petrol engine, the fuel ignites even before the spark plug generates a spark. This is known as pre-ignition and causes excessive knocking, high pressure inside the cylinder, and damage to engine components.
2. Clogging of Fuel Lines: Petrol moped fuel systems are not designed for the viscosity of diesel. Diesel can clog fuel filters and injectors, hindering the proper supply of fuel to the engine.
3. Injector Failure: Petrol engines have fuel injectors designed specifically for the properties of petrol. Using diesel in a petrol engine puts enormous stress on the injectors, causing them to wear prematurely or malfunction.
4. Piston Damage: Diesel engines have stronger and thicker pistons to handle higher compression ratios. Petrol engines have lighter pistons designed for the compression levels associated with petrol. Using diesel in a petrol engine might cause severe stress and damage to the pistons, potentially resulting in piston ring failure.
5. Increased Carbon Deposits: Diesel fuel tends to produce more carbon deposits compared to petrol. These carbon deposits can accumulate on engine components such as valves, piston crowns, and injectors, leading to reduced engine efficiency and potential failures.
6. Safety Risks: Using diesel in a petrol engine could cause a fire or explosion due to pre-ignition and increased pressure. Diesel has a higher flashpoint, making it more difficult to ignite under normal conditions. However, in a petrol engine, due to the pre-ignition issue, diesel can ignite prematurely and cause uncontrolled combustion.
Using diesel in a petrol moped is highly dangerous and can cause significant damage to the engine, potentially resulting in costly repairs or complete engine failure. Therefore, always ensure to use the appropriate fuel as specified by the vehicle manufacturer.
