
Car fuel pumps are covered under the three-guarantee policy. Function of fuel pump: The fuel pump's function is to draw gasoline from the fuel tank and deliver it through pipelines and fuel filters to the float chamber of the carburetor, providing the car engine with the power needed to start and operate the vehicle. It is precisely because of the fuel pump that the gasoline tank can be placed at the rear of the car, away from the engine and below it. Purpose of fuel pump: The purpose of the fuel pump is to supply the required fuel to various fuel injectors and cold-start injectors. In electronically controlled fuel injection systems, there are generally two types of electric fuel pumps used: roller-type electric fuel pumps and vane-type electric fuel pumps. The roller-type electric fuel pump has an inlet on one end of the pump housing and an outlet on the other. The roller pump on the inlet side is driven at high speed by a drive motor located in the middle of the pump housing. The rotor is eccentrically installed inside the pump body, with rollers placed in the grooves of the rotor.

When it comes to whether the fuel pump is covered under the three-guarantee policy, I’ll share my experience from buying a car. Shortly after getting my new car, the fuel pump had an issue. The 4S dealership said it was covered under warranty since the fuel pump is considered a core component of the engine, and the three-guarantee policy typically includes such wear-prone parts—though specifics depend on the brand’s regulations. For example, with brands like Volkswagen or Toyota, the powertrain warranty often lasts three years or even longer. If you’re a new car owner like me and notice abnormal noises or starting difficulties, don’t delay—check the warranty period in the user manual or contact the seller immediately. Early detection can save you thousands in out-of-pocket repairs. Remember to maintain the fuel system regularly, like changing filters, to prevent issues and extend part longevity. In short, don’t shy away from leveraging your consumer rights. If it’s out of warranty, negotiate a repair plan—safe driving always comes first.

As someone who frequently deals with repair shops, I know that fuel pump issues are not always covered under the three-guarantee policy. The fuel pump is part of the fuel supply system, which is generally covered under the three-guarantee scope, but it depends on the manufacturer's policy and usage conditions. The failure rate is higher in the first few years of a new car, but damage caused by human factors is not covered. A friend of mine had their fuel pump fail due to impurities from a gas station, and the three-guarantee claim was denied. I recommend always using high-quality fuel and avoiding prolonged idling. When buying a car, pay attention to extended warranty options. The key is to get timely inspections: have the dealership diagnose the issue, which may lead to free or low-cost repairs. The details of the three-guarantee policy should be clearly stated in the contract—don’t just rely on the salesperson’s promises. In short, prevention is better than repair, saving both money and peace of mind.

I always pay attention to consumer rights. Whether the oil pump is covered by the three-guarantee policy depends on the warranty terms. National three-guarantee regulations cover defective product components, and as a critical part, the oil pump is typically included in the warranty for repair or replacement. However, it won't be covered if the warranty period has expired or if it's due to improper use, such as aftermarket modifications. After purchasing a car, keep your invoice and maintenance records safe, and contact the dealer immediately if issues arise to protect your rights. In most cases, new cars are covered for free repairs within the first two to three years. Addressing such minor issues can save you from major troubles. Additionally, consulting industry associations is more reliable. Just avoid reckless actions.


