Review on 💪 Enhance Your Lexus Performance with Original 12204-20040 PCV Valve by James Crofton

PCV is one of the most overlooked items of routine maintenance and it can actually make a world of difference in your car's performance. When I first got my GX470 it had a very rough idle but acceleration was pleasantly subtle. In an agonizing attempt to figure out what's causing my rough idle, I've replaced spark plugs and ignition coils, and even upgraded the air cleaner to draw in cold air, but nothing could stop the shaking. Then it occurred to me that the PCV probably needed a new replacement. But can it really matter? While the original valve still "rattled" (the field technician's tried and true way of determining if it's still working), it purred like a kitten when I ran it afterwards. Every 15,000-30,000 km! And for less than $10 each, why not?