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winton

Chatter noise issue

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Hi All,

So my engine has develop a noise which I would describe as a chatter from around 3000 rpm. 

Normal driving I change gear around 3000 and the engine produces the chatter noise. 

If I put my foot down the engine make more of a rattling noise from 3000 up but it's not as noticeable. 

Im thinking valve train so I checked and adjusted the lash at .020, no change.

I thinking possibly harmonic vibration, hope not.

Anyone have any ideas or what else it could possibly be?

 

Cheers

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Is it only while driving or can you pop the hood and free-rev it to make the noise?

Sent from my CPH1607 using Tapatalk


Loose converter or flexplate?

Sent from my SM-G570Y using Tapatalk

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On 12/01/2019 at 3:18 PM, winton said:

Hi All,

So my engine has develop a noise which I would describe as a chatter from around 3000 rpm. 

Normal driving I change gear around 3000 and the engine produces the chatter noise. 

If I put my foot down the engine make more of a rattling noise from 3000 up but it's not as noticeable. 

Im thinking valve train so I checked and adjusted the lash at .020, no change.

I thinking possibly harmonic vibration, hope not.

Anyone have any ideas or what else it could possibly be?

 

Cheers

 

My gemini has made some horrible noises from oddball things.

one was loose alternator making a knocking noise and vibration.. 

the most recent(now you've reminded me) is air cleaner lid has a cracked weld (that i did) that has it vibrating at about 3000 ish rpm

 

falcons over the years have had the heat sheild do similar over the exhaust flange, 

clutch cable spring missing making the fork rattle

and BELTS.. try tipping some water over the fan belt, see if it goes away

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3 hours ago, gerg said:

Is it only while driving or can you pop the hood and free-rev it to make the noise?

Sent from my CPH1607 using Tapatalk
 

You know what didn't try this, just did and its not making the noise.

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3 hours ago, CHESTNUTXE said:

Loose converter or flexplate?

Sent from my SM-G570Y using Tapatalk
 

Possibly loose flexplate but its not making noise at idle. I am going to pull the trans to check when I have a chance.

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2 hours ago, deankdx said:

 

My gemini has made some horrible noises from oddball things.

one was loose alternator making a knocking noise and vibration.. 

the most recent(now you've reminded me) is air cleaner lid has a cracked weld (that i did) that has it vibrating at about 3000 ish rpm

 

falcons over the years have had the heat sheild do similar over the exhaust flange, 

clutch cable spring missing making the fork rattle

and BELTS.. try tipping some water over the fan belt, see if it goes away

Yeah I don't think its any bolt ons, and auto. Pretty sure if it was a fan belt issues the belt would liberate it's self but I'll check it out

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34 minutes ago, winton said:

Yeah I don't think its any bolt ons, and auto. Pretty sure if it was a fan belt issues the belt would liberate it's self but I'll check it out

 

check the noise out on mine at 1.18. (naturally it was much worse at bigger revs)

was alternator bolt missing

 

 

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