I am very handy and going to replace entire EGR valve and cooler and anything else I need to as I started to get the symptoms of a clogged EGR system. My question is, when is it too late? I'm getting some shakes on start up after sitting over the winter season(storing over winter) and losing some power/performance during regular driving season. I have replaced the plugs and the coils and that helped a bit. I have seen that the manifold can be cleaned out and or replaced as well but if I am getting these effects is it too late or can I do all the work and expect a recovery? Or is the H gasket gone? I'd be fine doing that work too. Love this forum and thank you and sorry if I missed a thread covering this already. Cheers to the Prius! Im at 160K miles fyi. Bryan.
Agree, it's late. Our EGR cooler at 120K was very dirty and about 75-80% clogged with rock hard carbon and oily gunk. I swapped in a pre-cleabed spare EGR cooler and EGR valve valve, and the latest version of the intake manifold. I also installed an oil catch can with micromesh stainless steel screens packed with stainless steel potscrubber material to catch the oil and oil vapor/mist that comes out of the PCV circuit and gets routed back to the intake manifold. So far, it's running well at 143K miles, and it's not noticeably burning any oil between oil changes. SM-G781V ?
you can't know without testing, unless there are blatant symptoms like white smoke, losing coolant and etc. rough starts, stumbling, shaking can be caused by many things. people experience clogged egr circuit at different miles. at 160k, it should be ceaned, but test the head gasket first.
Leak down test first, if passes check your plugs authencity. If test fail, pour in leak stop and drop the keys off to carvana or carmax. Don’t tell anyone you did that here.
Yes you were lucky to catch that I guess that engine barely broken in for a Toyota generally speaking but for this model I guess maybe so. Generally these blown engines and clogged EGRs and blown head gaskets I've usually been seeing after 160 to 170, 000K. Which is out of Toyota warranty generally speaking and all that and fairly well broken in and should be ready to head to 400K but after 2010 maybe 2:50 and then the rest of the cars starting to deteriorate so bad inside and out and a lot of that stuff is not cost-effective to replace a lot of the trim ....buttons.. etc is either not available or extremely expensive and on and on and on door panels and the like oh well It's just not the ones.
