Vacuum Advance
Vacuum advance is a diaphragm on the distributor that advances ignition timing at light load for better economy.
What is Vacuum Advance?
It works together with centrifugal advance. A split diaphragm causes poor economy and response. Modern engines do this electronically. Some engines have both advance and retard diaphragms.
How it works
Intake vacuum pulls a diaphragm that rotates the points plate to fire the spark earlier.
Why it matters for your car
Test the diaphragm with a hand vacuum pump. Connect it to the correct vacuum port.
Other terms
- 0–100 Km/h Acceleration
- Breakaway Cable
- Car Sharing
- Carburettor
- Crown Wheel And Pinion (Ring And Pinion)
- Dashcam (Dashboard Camera)
- Dynamic Load Management
- Glow Plug Warning Light (Preheat Light)
- Hesitation (Flat Spot On Acceleration)
- Lane Keeping Assist
- Octane Rating
- Oil Pump
- Paint Blistering (Rust Bubbles)
- Panel Gap
- Seatbelt Height Adjuster
- Snatch Strap (Kinetic Recovery Rope)
- Thermal Runaway
- Thermostat Housing
- Tyre Hotel (Tyre Storage Service)
- Wheel Arch Rust