Distributor Vacuum Advance

Critical For Operation

Ignition System

Adjusts the ignition timing based on engine load and speed, improving performance.

The distributor vacuum advance adjusts the ignition timing by advancing or retarding it based on vacuum pressure, optimizing engine performance during acceleration and cruising.

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Typical part cost

$30–$100🔒

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Typical labor cost

$100–$300🔒

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Typically lasts

80,000–150,000 mi

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Or about

5.0–10.0 years

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DIY difficulty

5/10

⚠️ Owners Often Notice

If the Distributor Vacuum Advance is starting to fail, these are the signs owners most commonly report before it gets worse:

Poor engine performance

Engine misfires

Loss of power

Poor fuel economy

Engine knocking

Hard starting

Related Services

Services commonly performed on or around this part.

Replace Distributor Vacuum Advance

No standard interval on file

Inspect Distributor Vacuum Advance

No standard interval on file

Test Distributor Vacuum Advance

No standard interval on file