![]() ![]() The control of that is done through these two different solenoids here. If we look on the backside, you’ll see a little alignment dowel that goes inside on the cam shaft, but these two pieces decouple and cause our cam advance or retard. And now if I had a little better grip here, you would see I would be able to decouple and move from the sprocket, the gear part and move the part that’s physically attached to the camshaft here. So I’ve popped the plastic cover off one of these and you’ll see there’s a return spring in there. So I’ve got a brand new one here, they’re actually the same for both cams. We’ve got the intake and the exhaust actuator. Well, in the front of the engine here, we’ve got the valve cover off and you’ll see the two different cam actuators here. And as we’re talking about the VVT system here, one of the most important things is maintenance, need to get rid of this sludge, and so you can understand why the same is probably found in the junkyard. Here we have a GM 2.4 liter Ecotec engine on the stand now, as you can see there’s been some lack of maintenance on this thing. Sign up to receive our newsletter with valuable new tech articles and videos every month.
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