Spark plug replacement Guide1999 Toyota Yaris

Tools Required

Parts Needed

Basic Procedure Overview

1. 1Remove engine cover if equipped
2. 2Disconnect ignition coil
3. 3Remove old spark plug
4. 4Check gap on new plug
5. 5Install new plug to torque spec
6. 6Reinstall coil

Frequently Asked Questions

How much does spark plug replacement cost for a 1999 Toyota Yaris?

DIY spark plug replacement on a 1999 Toyota Yaris costs approximately $30-120 in parts. A professional shop typically charges $110-320 including labor. By doing it yourself, you save $80–$200+ in labor costs.

How long does spark plug replacement take on a 1999 Toyota Yaris?

A spark plug replacement on a 1999 Toyota Yaris typically takes 30 minutes - 2 hours for a DIY mechanic. Professional shops may be faster due to lifts and pneumatic tools. First-timers should add 30–60 minutes for setup and learning.

Can I do spark plug replacement myself on a 1999 Toyota Yaris?

Difficulty varies depending on your 1999 Toyota Yaris's specific configuration. With the right tools and a service manual, most handy owners can complete this in 30 minutes - 2 hours.

What tools do I need for spark plug replacement on a 1999 Toyota Yaris?

For spark plug replacement on a 1999 Toyota Yaris you'll need: Spark plug socket, Torque wrench, Gap gauge, Dielectric grease. You'll also need the correct replacement parts: Spark plugs (vehicle specific), Anti-seize compound.

What happens if I delay spark plug replacement on my 1999 Toyota Yaris?

Old spark plugs in your 1999 Toyota Yaris cause misfires, rough idle, poor fuel economy, and can damage the catalytic converter—a $500–$1,500 repair. Plugs seized from over-waiting may snap during removal.