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Knocking noise from engine bay. 

 

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 Post subject: Knocking noise from engine bay.
Posted: Wed Feb 03, 2010 9:25 am 
Getting Side Ways
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Something in my engine bay. Might even be in my engine knocks under load. But I can only hear it through the passenger window.
Any ideas
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 Post subject: Re: Knocking noise from engine bay.
Posted: Wed Feb 03, 2010 10:59 am 
Getting Side Ways
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Could be a worn ball joint, a broken rocker arm, noisy lifter, or coming from the power steering rack.

 

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 Post subject: Re: Knocking noise from engine bay.
Posted: Wed Feb 03, 2010 12:24 pm 
Getting Side Ways
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How do I go about checking a rocker arm? Just take the rocker cover off?
I think its something in the suspension area tho...
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 Post subject: Re: Knocking noise from engine bay.
Posted: Wed Feb 03, 2010 12:30 pm 
Getting Side Ways
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a shock bolt loose or a worn shocky rubber

 

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 Post subject: Re: Knocking noise from engine bay.
Posted: Wed Feb 03, 2010 12:47 pm 
Getting Side Ways
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I'd check the suspension first before taking the rocker cover off.

If you jack the front left side up, you can grab hold of the wheel (parallel with the ground) and try moving it left to right to check the tie rod for wear. If you move the suspension up and down with a lever under the wheel (like a bit of thick timber), you can check if the lower ball joint has any play. Worn wheels bearings may also be the cause of movement. And prop the car up on vehicle stand for safety. Wouldn't like to hear you got squashed.

Do a visual inspection of the bushes on the front as well.

 

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 Post subject: Re: Knocking noise from engine bay.
Posted: Wed Feb 03, 2010 12:51 pm 
Getting Side Ways
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As EDXR6-poly mentioned, a worn shock. Just bounce the front up and down to see it makes any noise topping out, or if it seems spongy.

 

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 Post subject: Re: Knocking noise from engine bay.
Posted: Wed Feb 03, 2010 1:01 pm 
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Maybe a broken engine mount.

 

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 Post subject: Re: Knocking noise from engine bay.
Posted: Wed Feb 03, 2010 1:41 pm 
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maybe the neighbours cat wanting out
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 Post subject: Re: Knocking noise from engine bay.
Posted: Wed Feb 03, 2010 1:44 pm 
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check your upper control arms for bush wear mine had a noise coming from the front I couldnt figure out till i jacked it up and found one worn bush?
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 Post subject: Re: Knocking noise from engine bay.
Posted: Wed Feb 03, 2010 4:00 pm 
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upper control arm bushes perish, the metal through the middle of it collides with the bracket, good chance thats what you are hearing. Passenger side always seams to go first.

 

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 Post subject: Re: Knocking noise from engine bay.
Posted: Wed Feb 03, 2010 6:16 pm 
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Yeah mine was the passenger's side same with the shockie it just went as well so just replaced both and the drivers side bottom bolt was seized had to use angle grinder to cut the shockie off
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