What Causes Delayed Ignition in BMW?

1 Answers
MacMila
07/30/25 8:48am
BMW delayed ignition can be caused by poor fuel quality or issues with the ignition switch. Faulty Camshaft Sensor: If the timing alignment is confirmed to be correct, the camshaft position sensor should be checked to ensure it is functioning properly. Insufficient Fuel Pressure: Fuel pump pressure loss or poor injector sealing can lead to inadequate fuel pressure, resulting in prolonged ignition time. Faulty Carbon Canister Solenoid Valve: Weak ignition after sun exposure without secondary ignition attempts is usually due to a faulty carbon canister solenoid valve. Intense fuel vaporization under sunlight can cause cylinder flooding (wet walls) if the valve seal is compromised.
Was this review help?
14
1
Share
More Forum Discussions

Do I need to handle traffic violations when filing for a car color change?

When filing for a car color change, it is necessary to handle any outstanding traffic violations for the vehicle. Below is more information about car color changes: 1. Duration: Generally, a car color change can last for 7-8 years. If the quality of the color film used is poor, it not only provides minimal protection for the car paint but also has relatively weak adhesion to the paint surface. Over time, bubbles may appear, or the film may even peel off. 2. Required documents: The materials needed for the color change procedure include the vehicle's license, the owner's ID card, and the vehicle registration certificate (green book). If a friend is handling the process on your behalf, their ID card must also be brought along. Since the vehicle license needs to be updated, photos and an exterior inspection will be conducted before processing the application, similar to the exterior inspection during a vehicle inspection.
20
3
Share

What Maintenance Does a Car Need After Three Years?

After three years, a car requires the replacement of four fluids and three filters: brake fluid, power steering fluid, transmission fluid, coolant, air filter, fuel filter, and engine oil filter. Below is a detailed introduction to car maintenance: 1. Main items: Replace engine oil and oil filter, air filter, fuel filter, transmission fluid, and perform tire maintenance. 2. Purpose: The goal of car maintenance is to keep the vehicle clean, maintain normal technical conditions, eliminate potential hazards, prevent faults, slow down deterioration, and extend the service life. 3. Importance: Daily car maintenance is crucial. Neglecting routine maintenance can not only cause unnecessary damage to the vehicle, shortening its lifespan, but also endanger driving safety.
4
5
Share

Can You Drive in Sneakers?

You can drive in sneakers as long as they feel comfortable and do not restrict foot movement. However, the following types of shoes are not recommended for driving: Boots: Boots tightly wrap around the legs, which can restrict joint movement. Some boots have thick soles, making it difficult to precisely control the brake and accelerator. This can lead to accidentally pressing the accelerator instead of the brake, causing loss of vehicle control. Such stylish but impractical shoes are not suitable for driving. Platform Shoes: Compared to high heels, platform shoes are more comfortable for walking, which is why many women often wear them while driving. However, driving in platform shoes can feel clumsy and may affect the contact between the foot and the pedals. In some cases, it might even prevent fully depressing the brake pedal, so it's best to avoid wearing them.
14
5
Share

What are the impacts on car owners when selling a car as scrap metal?

Selling a car as scrap metal has the following specific impacts on the owner: 1. Inability to deregister: If the car is directly sold as scrap metal, scrap metal yards generally cannot issue valid recycling certificates. Without complete documentation, deregistration cannot be processed. To deregister a vehicle, it must first be scrapped at an official motor vehicle recycling company, and only after obtaining the relevant recycling certificate can the vehicle's records be deregistered. 2. New vehicles cannot be registered: If the car is directly sold as scrap metal without deregistering it, this will affect subsequent driver's license inspections, and the vehicle management department will suspend the registration of any newly purchased vehicles. Additionally, if the vehicle is privately sold or dismantled for scrap, the owner will also lose the right to register new vehicles.
7
2
Share

Does a Flood-Damaged Vehicle Count Under Auto Damage Insurance?

For flood-damaged vehicles, they can be considered as partially covered under auto damage insurance, where insurers may compensate for all parts except the engine. Below is more information about auto insurance: 1. Definition: Auto insurance is a type of commercial insurance that covers liability for personal injury or property damage caused by natural disasters or accidents involving motor vehicles. 2. Compulsory Traffic Insurance: Compulsory traffic insurance is a state-mandated insurance that every vehicle owner must purchase. Driving without compulsory traffic insurance, if caught, will result in vehicle impoundment (until the insurance is purchased and displayed in the designated location), fines, and deduction of corresponding points. Compulsory traffic insurance primarily covers personal injury and property damage to victims (excluding the vehicle's occupants and the insured) in traffic accidents. Moreover, the compensation limit of compulsory traffic insurance is limited and cannot cover large-scale personal injury accidents.
17
5
Share

What are the symptoms of driving with a blocked exhaust pipe?

After the exhaust pipe is blocked, the following symptoms may occur while driving: 1. Poor acceleration: During long-distance driving, the blockage of the exhaust pipe causes poor exhaust flow, leading to reduced air intake and decreased engine power. This may result in unstable engine idling, weak acceleration, and a feeling of the car being sluggish. 2. Frequent forced downshifting of automatic transmission: The blockage of the exhaust pipe reduces engine power, prompting the driver to press the accelerator deeply to speed up, which fully opens the throttle. At this point, the car will control the automatic transmission to force a downshift based on the throttle's condition. 3. Slight backfiring during sudden acceleration: A blocked exhaust pipe causes some exhaust gases to remain in the cylinders, making the air-fuel mixture leaner and slowing the combustion speed. When the intake valve opens, the mixture is still burning, so it may backfire through the open intake valve into the intake manifold, causing a backfire phenomenon.
9
1
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.