What Is Variable Valve Timing (VVT)?
VVT helps modern engines make power and run cleanly. A Cranbourne West specialist explains.
What it is & what it does
Variable valve timing (VVT — also VANOS, VVT-i, VTEC, CVVT) adjusts when the engine’s valves open and close to suit the revs — giving better low-rev torque, high-rev power, economy and emissions all at once. It’s on most modern engines.
It uses oil pressure to move cam phasers, so clean oil at the right level matters.
Signs of trouble & how we help
VVT faults (often from dirty/low oil, a failing solenoid or phaser) cause rough running, power loss, a rattle on start-up, or a check-engine light. Because it relies on oil, neglected oil changes are a common cause.
We diagnose VVT faults, check the oil and solenoids, and fix the cause — clean oil being the cheapest protection.
Questions about your car? Just ask.
Understanding what’s under the bonnet makes servicing decisions easier — and we’re always happy to explain what your car needs and why, in plain English.
Book a service or a check with a Cranbourne West specialist online in 60 seconds, or call 03 8782 0711.
What Is Variable Valve Timing (VVT)? — FAQ
It adjusts valve timing to the revs for better torque, power, economy and emissions across the range.
Often dirty or low oil, a failing solenoid or phaser — it relies on oil pressure.
Rough running, power loss, a start-up rattle, or a check-engine light.
Keep up oil changes with the correct oil — the cheapest protection. We diagnose any fault.
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