zander1985

hi all new to the site and loving it already. ok here I go got a knocking from my turbo 2000 it fluctuates from quiet to loud and its not apparent when driving. car holds boost fine and no power loss idles nice im stuck any help would be much appreciated (h noise sounds like its coming from top left of engine as you look at it

Gear Head

iTrader: (2)

Does the knocking noise increase with the speed of the engine?

piehole1983

iTrader: (7)

As above, big end knock is worse on deceleration of the engine. I think it's really obvious on idle too.

piehole1983

iTrader: (7)

zander1985

no it goes quiet and I can only hear it when revs drop bellow maybe 1500 rpm engine isn't shaking about like others with big end failure

zander1985

the knock is only apparent on idle. done an oil change today and oil was clear no metal fragments or powder. its a serious head scratcher and driving me mad haha

piehole1983

iTrader: (7)

Can you take a video and post it??

zander1985

I have a video of it but I sounds much worse in the video. I will take a better video tomorrow and post it. thanks for the input guys all help is appreciated

piehole1983

iTrader: (7)

Hopefully it's not the big end, or small for that matter. Maybe check there's no blow outs on the exhaust manifolds and that spark plugs are in properly?

zander1985

Will check that in the morning when I'm getting the video yeah hopefully not big or small end mate really love the car and would be a shame cos the engine apart from this knock is very strong and car has been looked after

zander1985

Little update when I press on the left hand timing belt cover the noise gets louder. Could it maybe be the tensioner and the timing has jumped a few teeth ?

piehole1983

iTrader: (7)

Ahhh, right. I saw a video about the tensioner causing a knock. I'll find it and post a link.

piehole1983

iTrader: (7)

This is it!

zander1985

That sounds exactly the same mate. Going to rip the timing belt covers of tomorrow and see if that is the culprit fingers crossed

piehole1983

iTrader: (7)

Hopefully that'll be the problem, good luck!

piehole1983

iTrader: (7)

Any updates mate?

zander1985

Had a "mechanic" LOOK!!! At it without even opening the bonnet laughed at me and said bottom end. Getting pissed off telling these so called mechanics "I've got a subaru and it's making a slight knocking sound" and getting laughed at and told bottom end. Going to see the guys G.i Motorsport and see what they say been told they're the best for scooby work hopefully don't get laughed at from them