Knocking sound

My wrx making a knocking sound

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Autos & Vehicles

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[renegade00]

It was a spun/ wiped rod bearing.

[renegade00]

I fixed it by replacing the engine with a used one. I haven't torn the original one apart, but it was definiteley either the wrist pin or a spun bearing.

[K3Shuff]

it is caused by reving in the high rpm range or past it

or reving in the high rpm range wit low oil

[dialogoinconscio]

third cylinder I think

[EthansOpinion92]

@huntawpn dude thats exactly how mine is, same rpm and everything, dont know which cylinder though, any idea how much it costs to fix?

-thanks, also you say it caused by turbo heat?

[EthansOpinion92]

@huntawpn dude thats exactly how mine is, same rpm and everything, dont know which cylinder though, any idea how much it costs to fix?

-thanks

[EthansOpinion92]

im havin the same exact problem with my 05 tell me what the poblem is whenever you find out, please thanks

[rthom86]

sounds like a wrist pin. A bad wrist pin will make them sound like a diesel running.

[ckthe1]

I'm having the same noise, what was the problem? I assume you fixed it by now.

Thanks,

[huntawpn]

it's a bad wrist pin bearing... i know cause the sound goes away once in a while and always ticks at let off at 3500rpm. it's cylinder 3 on my engine... usually cause by turbo heat.