Honda Civic Performance - JDM Discussion Engine tech, forced induction, springs, shocks, brakes, tires, etc.

knock noise

Old 13-Jun-2007, 08:46 PM
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Angry knock noise

heres my dilemna...when i start my car sometimes..i hear a loud knock sound as if metal is hitting metal..

now while driving in 1st I'll accelerate then let go of the throttle and then the second the car jumps a little forward i hear the knock sound again. same with 2nd etc etc..

what do u guys think? bad motor mount?

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Old 13-Jun-2007, 08:50 PM
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either motor mounts or possibly exhaust is rattling off something (heat shield maybe)
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Old 13-Jun-2007, 08:53 PM
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well is it a knock or a rattle?
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Old 14-Jun-2007, 01:56 AM
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def not the exhaust or heat shield..lol

more like a clunk...

and it comes from the driver side only..

its damn annoying and kinda worrying me.
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Old 14-Jun-2007, 08:27 AM
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yeah it may be a mount, or a really bad a arm bushing or something. But most likely a mount. give your front end a check..
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Old 14-Jun-2007, 02:32 PM
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Originally posted by chris_v2
yeah it may be a mount, or a really bad a arm bushing or something. But most likely a mount. give your front end a check..
i'll definately take a look at it tomorrow morning.
im almost 100% convinced that its a bad mount.

only reason being is because it will make that clunk noise when i start the car up sometimes.

would an A arm vibrate that much on initial start up?

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Old 14-Jun-2007, 03:17 PM
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Originally posted by chris_v2
well is it a knock or a rattle?
What if theres a rattle when coming off first?
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Old 14-Jun-2007, 03:41 PM
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Originally posted by Notorious


What if theres a rattle when coming off first?

...there is no rattling at all!..LOL


just the clunk-ness!



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Old 18-Jun-2007, 02:42 PM
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ok well turns out it WAS the engine mount. top one by the timing belt.

it was bad...anyways...changed it and the sound is gone...

=)
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