Saw something wild at the salvage yard in Tacoma last week

I was pulling a transmission and noticed at least five cars from the last two years with the same engine failure. All of them were direct injection four cylinders with serious carbon buildup on the intake valves already. Has anyone else seen this becoming a regular thing on newer models?

3 comments

3 Comments

reesej2712d ago

Tried a catch can setup on my own car to see if it would help. It actually caught a surprising amount of oil vapor from the PCV line before it could reach the intake. The valves looked a lot cleaner at 40k when I finally checked them.

quinn_reed1713d ago

Spotted the same thing on a few low-mileage lease returns. My wallet hurts just thinking about the walnut blasting bill.

the_paul13d ago

Wasn't there a big forum thread about this on the VW boards? I remember reading that some of these newer turbo engines, especially the ones without port injection to wash the valves, are getting coked up crazy fast, like by 30k miles. The oil vapor from the PCV system just bakes onto the hot intake valves.