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Re: Engine Still Knocking 4kq
Try running the engine and start pulling the spark plug cables one
cylinder at a time. This will cut the power to the cylinder. If the
knocking goes away on a certain cylinder, it may be a piston wrist
pin, piston slap (worn cylinder), or a rod bearing gone south. At
least you will be able to isolate the suspect cylinder. HTH!
Rudy C.
87 5ktq
97 a42.8q
> Thanks for all your replies to my question of engine knocking noises.
>
> I checked everything and the knocking is getting worse... even when
> idling and standing still it will make a knocking noise, it seems to
> be coming from the cylinders around the middle of the engine...
> If I rev the engine it will go away or get worse (sometimes) then
> come back, other times it will not knock at all... when it does it
> does get pretty loud. It does not sound like a valve problem, more
> like a loose piece of metal banging against metal.
>
> I have a photo on the web of my engine I shot with an arrow pointing
> to where the knocking is coming from if that helps...
>
> http://www.lava.net/epicfoto/4kqeng.jpg
>
> Thanks!
>
> David Thoresen
> '85 4kq (and maybe soon an engine transplant?)
>