Does oil viscosity affect variable valve timing?

Using the wrong oil or the wrong viscosity oil affect variable valve timing operation and throw cam timing off, and it can literally destroy the 3-lobed cam and high pressure fuel pump.

Does VVT work on oil pressure?

The variable valve timing system is designed to use re-routed oil pressure to the rocker arm pistons above 2500 RPM to change the engine’s volumetric efficiency, resulting in increased power.

Can a VVT solenoid cause low oil pressure?

Most modern VVT systems utilize engine oil (hydraulic) pressure and some type of an electronic solenoid to initiate changes in valve timing, lift, and/or duration. One of the most common problems found when diagnosing a VVT system malfunction is low oil pressure or low engine oil level.

What does a variable timing oil control valve do?

The Oil Control Valve (OCV) is a a critical part used in every engine that is fitted with variable valve technology (VVT). A single control valve will regulate the supply of oil to a designated VVT hub, to advance or retard the timing by altering the camshaft angle position.

What diagnostic trouble codes are associated with the variable valve timing VVT system?

Two common error codes technicians run across with VVT systems are P0011 and P0021 (Camshaft position sensor “Bank 1” and Camshaft position sensor “Bank 2,” respectively). These codes (like any code) don’t entirely mean the sensor is faulty, so look at the VVT system for a fault and check the sensor as well.

What is an API donut?

The API “Donut” identifies oils that meet current API engine oil standards. It includes the SAE viscosity grade of the oil, API standards met by the oil, and other important performance parameters. The top of the “Donut” displays the motor oil’s API performance standard.

Can timing affect oil pressure?

Oil pressure is low as a timing belt wears out and pieces of its teeth can come loose and fall into the oil pan. As a result, the oil pressure in the engine will drop significantly. If the engine is not properly lubricated, it may fail completely.

What is variable valve timing (VVT)?

So, the advantage of variable valve timing (VVT), is that all the factors traditionally associated; with a given camshaft grind; are no longer fixed. As a result, making it possible to change valve timing in response to; changing engine speeds and operating conditions.

What happens if you use the wrong motor oil viscosity?

Using the wrong motor oil viscosity can cause serious problems like premature wear, a check engine light, and even camshaft damage. Read this article to find out what motor oil viscosity you should use.

What type of pressure is used in the timing chain?

Today’s vehicles use oil pressure to operate the timing belt and timing chain tensioners, and variable valve timing devices (VVT). On a gasoline direct injection (GDI) the high pressure fuel pump is operated by a camshaft with a high pitch 3-lobed cam.

How does the PCM know when to change the camshaft timing?

The rotation is executed using pulsed oil pressure. In order to command a cam timing change and then check the results, the PCM assumes you’ve used the proper oil viscosity. Switching to a higher or lower viscosity oil will change the performance of the camshaft VVT solenoid or phaser, so the computer won’t see the cam timing result it expects.