Ways to longer Camshaft Variable Valve Timing VVT gear lifetime

Posted by Candy Lai on

Variable Cam Phaser in VVT engine
More vehicles are equipped with VVT technology to improve fuel economy performance. This design is one of the notable breakthroughs innovation in automobile history. With altering valve lift movement , VVT system can provide better performance. The electronic technology allows right amount of oil supply to get into engine via variable valve timing solenoid adjustment.

Toyota VVT-i variable valve timing
Automakers have their own name to this technology. Ford calls it Variable Camshaft Timing, VCT and VVT-i is the name Toyouta calls it. Also different designs exist for VVT system and the most common is Cam Phasing type. With cam phasing, valve timing can be altered in time by camshaft position changing according to engine speed. More modern designs even have two camshafts in engine then both intake and exhaust VVT will exist to ensure precise control of valve timing.

ECM (engine control module) is in charge of controlling the camshaft movement by variable valve timing solenoid to deliver the signal to adjust the oil amount. VVT-i system (Variable Valve Timing - intelligent), received the signal from solenoid then can smoothly change the valve timing according to engine operating conditions.


Signs You shall check VVT gears
1. Poor Fuel Efficiency
Any malfunction of timing system can cause waste of fuel and performance. If you sense any fuel economy declining, chances are the system is failing.

2.Rough and idling running engine

3.Check Engine Light is on
Whenever something wrong in the engine, ECL will be turn on to remind you to check. Have verified mechanic to connect the car computer to diagnose for you.

4.Dirty Engine Oil
When oil getting dirty, it will cause clogging in timing chain system and Variable Valve Timing Solenoid as well. The VVT is out of order very possible.


Ways to Maintain VVT gears & Longer Lifetime
Most of time VVT faulty case is caused by contaminated engine oil. Firmly stick to Automaker's recommended maintenance plan is best way to longer the lifetime. Several parts in engine system rely on oil quality oil and proper oil pressure. Regular checking your oil level can prevent havoc on your engine!


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