How does the GM LS V8 oil flow and pressure work?
GM LS V8 VVT System: Oil Flow And Pressure The CMP actuator system controls the amount of intake and exhaust valve overlap. The engine control module (ECM) can only command the CMP actuator to advance the valve timing from the park position or retard the valve timing back to the park position.
How does dirty oil affect pressure control valve?
Dirty oil and the lack of regular oil changes can leave a buildup of sludge or debris in the passages leading to the pressure control valve that operates the VVT. If the oil is dirty and too much sludge accumulates at the valve ports, the sludge can be passed on through the cam and the valve assembly.
Is there a problem with GM variable valve timing?
The stories of poor oil change maintenance and its effects on GM variable valve timing are common with both dealers and independent shops, so if your customer has a vehicle with one of these systems, you really should encourage him (more passionately than usual) to adhere to the scheduled oil change intervals appropriate for his style of driving.
Where is the oil control valve located on a GM car?
Newer vane-style actuators are coupled with an electromagnetic coil situated on the oil control valve, which mounts directly on the front of the camshaft.
GM LS V8 VVT System: Oil Flow And Pressure The CMP actuator system controls the amount of intake and exhaust valve overlap. The engine control module (ECM) can only command the CMP actuator to advance the valve timing from the park position or retard the valve timing back to the park position.
Can a low oil level cause a VVT problem?
If your engine oil has not been changed out on schedule, it could damage the VVT solenoid, the VVT chain, and the gear drive. To avoid this situation, make sure to have your engine oil changed as recommended by the vehicle manufacture. Low oil levels can also cause problems with the VVT solenoid and other timing system components. 3.
What happens when the oil pressure is low in an engine?
Engine oil is used to cool and lubricate bearing and machined surfaces. Without oil pressure an engine will experience extreme internal engine damage due to heat caused by friction. All engines run on a pre-set pressure that cannot be adjusted. This pressure will vary depending on engine speed, temperature and weight oil.
Do you have to flush your engine before OIL CHANGE?
The oil won’t last as long or protect as well if it must contend with sludge and deposits from the previous oil. By the way, we don’t require use of AMSOIL Engine and Transmission Flush before switching to AMSOIL synthetic motor oil, but we recommend flushing your engine if you want to give it a fresh start.