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I own a 2010 Forte EX, bought new. From the get go it has had a valve clacking/light knocking noise only at warm idle only. The noise is also intermittant, some days it's not there. Which is puzzling as it rules out valve adjustment. The noise appears to be coming from the valves, under tha valve cover. I used a mechanics stethoscope to isolate it. Timing chain area of front cover is quiet. Lower end of engine is quiet. Pulleys are quiet.
I know these engines are exactly quiet due to lack of hydraulic lifters, but this is a noticeable noise that really doesn't belong on a new car. It's also not the injector ticking, as that is recognizable and a separate sound at idle. This ONLY occurs at warm idle, cold star is normal with no unusual noise.
Anybody else experiencing this on a new Forte EX? Any info would be appreciated, thanks.
I know these engines are exactly quiet due to lack of hydraulic lifters, but this is a noticeable noise that really doesn't belong on a new car. It's also not the injector ticking, as that is recognizable and a separate sound at idle. This ONLY occurs at warm idle, cold star is normal with no unusual noise.
Anybody else experiencing this on a new Forte EX? Any info would be appreciated, thanks.