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Strange noise when reving motor help!

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Old 04-05-2018, 02:37 AM
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Default Strange noise when reving motor help!

I have a B20vtec and at idle i can hear a muffled sound through the intake when I rev it.when I remove the intake and rev it I don’t noticed it.i am gettin jerking,hesitating while driving,has trouble reaching redline,no power.new cap,rotor,plugs,wires,check valve lash,oil is good.i brought it in for an alignment at a shop while it was snowing and only noticed once it snow cleared.
Old 04-06-2018, 03:25 AM
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Default Re: Strange noise when reving motor help!

timing on cams and crank is fine? it sounds like timing belt slip over
Old 04-06-2018, 04:14 AM
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Default Re: Strange noise when reving motor help!

Will that cause a noise when reving the motor at idle ?
Old 04-06-2018, 04:24 AM
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Default Re: Strange noise when reving motor help!

mechanicl noise or ?
Old 04-06-2018, 04:37 AM
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Default Re: Strange noise when reving motor help!

I would think so.i clean my iacv and vtec solenoid and it kinda ran a bit better.when it’s cruising I don’t notice much jerking,hesitating but when I’m on the gas pedal it does it.
Old 04-06-2018, 07:39 PM
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Default Re: Strange noise when reving motor help!

Distributor problem... weak coil or bad ICM.
Old 04-07-2018, 05:43 AM
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Default Re: Strange noise when reving motor help!

Originally Posted by JRCivic1
Distributor problem... weak coil or bad ICM.
would that cause that noticeable sound during idle when reving it ?
Old 04-07-2018, 12:48 PM
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Default Re: Strange noise when reving motor help!

I have a little video showing the sound but I don’t know how to upload on here
Old 04-08-2018, 07:21 AM
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Default Re: Strange noise when reving motor help!

here’s the video listen to when I push the throttle it’s some kind of metallic sound can hear it from intake mostly
Old 04-09-2018, 03:53 AM
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Default Re: Strange noise when reving motor help!

Bump.anyone hear the sound
im talking and maybe know what it is?i tried it with the filter off and pipe still connect and still makes the noise.filter/pipe you can’t hear it
Old 04-11-2018, 07:20 AM
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Default Re: Strange noise when reving motor help!

I feel like I had the same noise at one time and it was the distributor going bad, maybe just the cap I cannot recall.
Old 04-11-2018, 01:43 PM
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Default Re: Strange noise when reving motor help!

DID YOu replace the whole distributor?i put in a new cap and rotor.its hooked up to msd blaster
Old 04-12-2018, 04:58 AM
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Default Re: Strange noise when reving motor help!

Yes, I said the hell with it and just ordered a new one. But that was me, I didn't feel like properly diagnosing the entire inside of it.
Old 04-13-2018, 05:12 AM
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Default Re: Strange noise when reving motor help!

Originally Posted by xlusiveracer
I have a B20vtec and at idle i can hear a muffled sound through the intake when I rev it.when I remove the intake and rev it I don’t noticed it.i am gettin jerking,hesitating while driving,has trouble reaching redline,no power.new cap,rotor,plugs,wires,check valve lash,oil is good.i brought it in for an alignment at a shop while it was snowing and only noticed once it snow cleared.
Before you go throwing money at new parts you might consider looking for vacuum leaks.

_
Old 04-16-2018, 12:25 AM
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Default Re: Strange noise when reving motor help!

Originally Posted by nkowi
Before you go throwing money at new parts you might consider looking for vacuum leaks.

_
I’ll check.you have a good place to start?did you listen to the video?do you hear the metallic sound when I push the throttle?
Old 04-16-2018, 12:26 AM
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Default Re: Strange noise when reving motor help!

Originally Posted by 09chaplak
Yes, I said the hell with it and just ordered a new one. But that was me, I didn't feel like properly diagnosing the entire inside of it.
did that fix it
Old 04-16-2018, 05:19 AM
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Default Re: Strange noise when reving motor help!

Originally Posted by xlusiveracer

did that fix it
It is or is not fixed?
Old 04-16-2018, 04:08 PM
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Default Re: Strange noise when reving motor help!

I’m asking you if changing it fixed it?
Old 04-17-2018, 06:04 AM
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Default Re: Strange noise when reving motor help!

Oh lol my bad. Yes it did, but that was just my specific example.

My advice is to diagnose it properly before buying a new distributor, I was just lazy and gave it a shot. Crap shoot was in my favor that time.
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