Hello Peter,
Hello Peter,
I like the article. I've owned a 3rd gen 2010 Prius for almost 2 years. One day when I was getting on the freeway accelerating hard I had my temp light come on. I pulled over immediately to investigate. Overwhelmed by the plumbing and incredibly tight spaces under the hood, I went back to the driver's seat to find it was no longer on. I accelerated less and was on my way but noticed my heat was not consistent and would get cold. This happened a little more than a year ago now and it was fairly cold. Anyway, I suspected what is happening is I'm getting air in my coolant from a leaking head gasket. A couple weeks ago I started tearing down my engine. Keep in mind I have no engine codes on the car showing. I found that my EGR cooler is completely blocked, like I sprayed it down with carb cleaner and it just pools. I've run wires through it to open the passages. I still have lots of cleaning to do. Same with my EGR pipe from the cooler to the intake. I've been reading that an oil catch can can help. I was only using about 1.5 quarts per 5k miles though. I haven't really gotten spark knock but was curious if you have run into this. The engine has 275k on it now. I've taken the head to a machine shop to check it out for flatness and check/seat the valves and replace the seals. Thank you.