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Yes! Somehow I took the picture (or uploaded the picture) upside down “AFAIK NGK were never the stock-from-factory plug. Previous owner replaced,...
Terrible indeed! Any guess on what might be the reason for such damage on the cylinder #3 spark plug? Will definitely clean the EGR and install...
Hello again @rjparker! I'm going to do the coolant gas check as soon as possible as well as check the cylinders with a borescope as soon as I can...
I dared to go outside this evening to perform the tests as advised (switch spark plugs, switch coils and block EGR). It was a “cool” 100 degree...
Hello @rjparker, since these tests often pass with a Gen 3 head gasket (please correct me if I'm wrong but what I understand is that the head...
Thank you @Mendel Leisk! I will try swapping spark plugs, check engine codes, then swap coils, check engine coils. After that I will do the EGR...
@Mendel Leisk forgot to mention that I'm not driving the car anymore. It shakes so bad that I just don't want to risk driving it (maybe if I press...
@Tombukt2 wouldn't bad/fake plugs cause problems right away? I drove it almost a month without any issues. @Mendel Leisk thank you for the...
@MAX2 Wow, thank you for that comprehensive list! Do you think the head gasket is also bad? I would hate to spend the time cleaning the EGR system...
Prius 2010 Base; 188K Miles. Bought with 80k Miles from original owner for cheap because it had bad/noisy wheel bearings. Replaced front struts...
