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Hello All, I have recently gotten a knocking sound when starting up my silvia, it goes away on idle but once you rev it and also while shutting down you can hear it. Yes i have looked at every thread and video i can find but they're all consistence knocks while mine is quite on idle. We thought it may be the tensioner but no luck after changing that. We suspect the noise is in the manifold but very hard to pinpoint. The belt is also very tight. Here is a video of it turning on. Thanks!
Hey Guys Have started to notice a slight knock from under rocker cover mainly at idle but can still here if when I rev the motor. The knock speeds up with the motor. I am a mechanic myself but don't have too much experience with these engines. Im thinking it could be sticky lifters but usually that will go away once oil pressure builds and is usually louder. It is slightly worse when cold but its still there when hot also. Maybe there isn't sufficient lubrication getting to the cams? Is there and electronically controlled oil valve? it doesn't sound likes its to do with vct or chain. Its not that bad but I want to nip it in the bud before something bad happens Any help would be AWESOME!! Cheers!