Engine noise
Thanks for reassurance. Had Tacoma with 4 liter and it Did not have that knocking-ish sound although it made just as much roar! otherwise. Weird because it comes and goes. Oh well. Great motor- I love it. 4Runner 4liter set up a bit differently than the Taco I had (gear ratios...
“Valve” Noise
My 2016 Trail has it too. Don’t think it’s valves on mine. Drives me crazy. Sounds like driver side, under hood knee height. Premium fuel has no affect. Mine is worse under 50 F, almost gone now above 65F. Don’t hear it in rain either. Might be egr valve flutter? Some plastics can...
