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Clatter/rattling noise when starting a 2.5 SL
When starting our 2.5 SL in the morning it will often clatter or rattle for about a second or less. I've searched the forum and found a couple of suggestions. One is that the VTC gear on the intake cam is making the noise and the other is that the cam chain tensioner is slow in filling with oil (i.e. hydraulic pressure) and it is causing the noise. Sometimes it rattles when we first start it and other times it does not. Once you start the engine, then turn it off it, then restart it, it nevers rattles.
I can live with it but my wife hates it and if the wife ain't happy, nobody's happy.
Which problem is most likely to be causing the noise?