As cool as Direct Injection can be, there are some things about it that make certain maintenance a requirement. If you aren’t familiar, DI is where the fuel injector is inside the combustion chamber in the cylinder, instead of being in the intake manifold. We won’t get into all the reasons for doing this or not doing this, but will tell you that one of the side effects is that there is no gasoline spraying onto the intake valve as it opens so the valve can get dirty. There is nothing to clean that valve and carbon can build up and cause efficiency and power issues. There are a few things you can do to help with this, but one of them is to keep your Positive Crankcase Ventilation system as clean as possible. The best way to do that is with a catch can system and that is exactly what Jefferson is installing in this one. He’s got an LT swapped Buick Skylark he’s working on and it is getting some love with this one. Check it out.
Video Description:
Gen V LT-series engines produce a lot of oil vapor and because there is no fuel in the intake port of the head, the intake valves end up with a ton of carbon build-up. This leads to sticky valves which wear out the rest of the valvetrain components. You can solve this by adding a catch can inline with the dirty side of the PCV system.
Watch as Jefferson explains how the system works, and how to install an @HolleyPerformance Earl’s Plumbing catch can.
