Spark Plug Replacement

Spark plugs ignite the air-fuel mixture in your engine's cylinders. When they wear out or foul, the engine can misfire, run rough, lose power, and waste fuel. Replacing spark plugs at the recommended interval is one of the simplest and most impactful maintenance tasks — and it's perfectly suited for mobile service.

WestPro Auto replaces spark plugs on-site in Culver City and surrounding areas. Leo Juarez removes the old plugs, inspects them for signs of engine issues (oil fouling, lean/rich conditions), and installs new plugs to the correct torque specification. If ignition coils show signs of wear, Leo can replace those at the same time.

Modern iridium and platinum spark plugs can last 60,000–100,000 miles, but they don't last forever. If your engine is misfiring, running rough, or you're seeing decreased fuel economy, worn plugs are one of the first things to check.

Signs You May Need This Service

• Engine misfire (rough running, hesitation, stumbling)
• Check engine light — especially misfire codes (P0300–P0308)
• Decreased fuel economy
• Rough or uneven idle
• Difficulty starting the engine
• Loss of acceleration or power

Not sure if this is what you need? Check our FAQ page or contact Leo to describe what you're experiencing.

What Happens During the Repair

Leo removes the ignition coils (or plug wires on older vehicles), extracts the old spark plugs, inspects them for wear patterns and abnormal deposits, and installs new plugs gapped to manufacturer specifications and torqued properly. He also inspects the ignition coils and boots for signs of wear or arcing. If coils need replacement, that can be done at the same time. The process takes about 45–90 minutes for most vehicles.

Why Mobile Service Works for This Repair

Spark plug replacement is entirely a top-of-engine repair — no lift is needed. It's one of the most mobile-friendly services available. Instead of booking a shop appointment and waiting around, Leo handles it at your home or office. For multi-coil engines, he can also inspect and replace failing ignition coils while the plugs are out.

Leo provides this service throughout Culver City and the surrounding Westside. See all service areas.

How often do spark plugs need to be replaced?

Can bad spark plugs cause a check engine light?

Should I replace ignition coils with spark plugs?