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Did you lube up the orings? A dab of grease from a grease gun is OK.. Do not use carb or brake cleaner on the injector O-rings. They will swell and you will never get them back in the hole.

What is the wheel size? What are the tire diameter numbers on the tires? Newer vehicles coming with big wheels and tires with small side walls. Looks great, but there’s a price for that.

Coil issues tend to be a Japanese car problem. I suspect it’s the fuel injector acting up. Bad spray pattern, orings. Get a remanufactured one off eBay. They clean them up. Give that a try.

The PCV orifice design has been around for many years on different GM engines like the 2.2. It’s never been a problem until the 2.4. Why? Because they switched to direct injection and made the assumption it would still work. Nope. Without the wash of gas from traditional port fuel injection the...

It’s something to do with the control panel. Rather than replace it I just moved the blend door for the season. Using the actuator as a key.

If your PCV or is clogged, there is so much pressure that the rings won’t seat correctly. And you’re going to consume a lot of oil. There are many ways to fix this.

How is it today? Did it relearn and it got better after the battery?

Lucas oil stabilizer is an old school additive. 30 years ago it was used in tired loose V8 engines. Lucas is 10x thicker than motor oil, so it could make your problems worse by obstructing flow through the tiny veins in the VVT oil passages. I think your problem is still related to the PCV...

Can somebody tell me the diameter of this port? What size hose should go on it?

This engine uses a fixed orifice PCV system. Nothing wrong with that. The problem is the location of the orifice. Someone at GM made the assumption that because fixed orifice does not use a mechanical PCV valve, there is nothing to be serviced, just stick it inside the manifold. Well, that...