FAQs » Page 3 of 22 » BookMechanic.uk

Q: How long does it take to replace spark plugs?

Most spark plug replacements take 30 minutes to an hour , depending on your vehicle’s make and model. Our mechanics can complete the job quickly and professionally, either at your home, workplace, or a local garage.

Q: Can I drive with bad spark plugs?

You can, but it’s not recommended. Faulty spark plugs can cause poor performance, increased fuel usage, and even long-term engine damage if left unchecked. It’s best to replace them as soon as you notice an issue.

Q: How often should spark plugs be replaced?

it depends on your vehicle and the type of spark plugs used. Standard plugs may need replacing every 12,000 miles , while long-life or iridium plugs can last up to 60,000 miles . Always refer to your vehicle’s manual or ask one of our mechanics.

Q: What do spark plugs do in a car?

Spark plugs ignite the air and fuel mixture inside your engine’s cylinders. This ignition is what powers your engine and keeps your car running. Without functioning spark plugs, your vehicle won’t start or run efficiently.

Q: How much does it cost to replace a timing chain?

The cost can vary based on your vehicle’s make and model, but timing chain replacements typically range from £400 to £1,200 . At BookMechanic.uk, we offer competitive pricing and upfront quotes before any work is carried out.