---
title: What Is Ignition Timing and Why Does It Matter?
description: Learn what ignition timing is, why spark advance is necessary, how timing affects performance, and common symptoms of incorrect timing settings.
---

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# What Is Ignition Timing and Why Does It Matter?

## Proper ignition timing is critical for performance, drivability, and engine durability on any distributor-equipped BluePrint Engine.

### ***What Is Ignition Timing?***

**Ignition timing is when the spark plug fires in relation to piston position.** The spark must occur before the piston reaches top dead center because the air/fuel mixture takes time to burn. Why Does Timing Advance Matter? **Engines require more spark advance as RPM increases.** This allows the combustion process to complete at the correct point in the power stroke for optimal power and efficiency. Too little timing can cause:

- Poor throttle response
- Reduced power
- Lower fuel economy
- Increased exhaust heat

 Too much timing can cause:

- Spark knock (detonation)
- Hard starting
- Starter kickback
- Potential engine damage

 How Do I Check Ignition Timing? Use a timing light to verify:

- Initial timing at idle
- Total timing at higher RPM
- Proper operation of mechanical advance
- Proper operation of vacuum advance, if equipped

Always follow the timing recommendations provided for your specific engine combination. 

### ***Frequently Asked Questions***

### Is more ignition timing always better?

**No.** Every engine has an optimal timing range. Adding more timing does not always increase power and can lead to detonation.

### Can incorrect timing cause performance problems?

**Yes.** Incorrect timing can reduce power, affect drivability, and contribute to engine temperature concerns.

### Does ignition timing affect fuel economy?

**Yes.** Proper ignition timing can improve fuel efficiency and throttle response.

### Can incorrect timing damage an engine?

**Yes.** Excessive ignition advance can cause detonation, which may result in engine damage. 

 

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