What is A VTEC Solenoid Spool Valve

The VTEC system provides the engine with valve timing optimized for both low and high RPM operations. The VTEC solenoid actually allows oil to flow to the internal galleries of the overhead camshaft. This means that the housing of the solenoid is holding back full engine oil pressure. A spool solenoid valve can direct the flow of hydraulic fluid. The valve is made up of spools that rotate or slide to block and open channels in a hydraulic system.

VTEC Solenoid Spool Valve Problem

While a VTEC solenoid rarely goes bad, problems with VTEC not engaging properly are extremely common. Most of the time incorrect wiring is to blame, but occasionally something even smaller is the culprit. When a solenoid is bad, may mean the solenoid's plunger is either mechanically stuck in a closed position and therefore always making contact which may eventually cause the starter motor to burn its windings.

If your VTEC Solenoid Spool Valve is malfunctioning, some symptoms may occur, such as checking the engine light is on; dirty motor oil; roughness of idling engine; fuel efficiency is reduced. You need to replace your VTEC Solenoid Spool Valve in time.