All Things Mk5 > Mk5 General Area
Weird rattle! Passenger side. -6.0°KW Camshaft Block 93
OllieVRS:
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Video says it all. Can only be heard inside the car, with the bonnet open I can't hear it, let alone locate it. Goes away as soon as the revs are above idle. Makes me paranoid it's the cam chain, but I'm not sure as I can't hear it if I stick my ear to the cam chain cover with the bonnet open.
Any ideas lads?
GVK:
Clutch in /out alter the sound?
Clarkj93:
Mines always made that noise, not every time on idle but fairly often. Yours sounds a little deeper/louder but could just be how your phone has recorded it or how mine is playing it. A specialist told me years ago they think it's just a solonoid not shutting off properly and not to worry about it unless you get any more symptoms which never happened 4 years later so I just live with it and no issues thus far.
OllieVRS:
I would think this could be the cause? Up to temp engine. Rattle is inconsistent, sometimes it's there but sometimes goes away.
My engine has a history of low oil pressure, but I'm only after fixing it 1000km ago, could this -6.0KW be caused by low oil pressure again it's something with the tensioner or chain? I know the tensioner runs on oil pressure.
Gonna shamelessly @Pudding here, because I know he's the expert on these kinds of things :happy2:
Appreciate it
Edit: Adding a picture of the cam chain, I only checked it 1000km ago and it seemed fine.
128k miles, shoddy service history, probably original chain and tensioner
OllieVRS:
Once the engine warmed up fully, here's the spec. What's weird is on Block 91 the actual became a bit lower than spec hovering between 25.5 to 26.5 KW. A symptom of the chain/tensioner or something worse?
Anyway, gave it some revs. Goes quiet as revs go up, and clackity as they come down. Scaring me into thinking it's rod knock :scared:
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Anyway, that's all for now. I'll double check the oil pressure to make it's not a factor. Replacement FEBI chain and tensioner, OEM VVT bolt have arrived, just waiting on the cam locking kit and T40080 bit. As always, appreciate all responses :smiley:
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