FN2 (K20z4) Rough noise when cold - Civinfo
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post #1 of 16 (permalink) Old 17th October 2018, 23:06 Thread Starter
 
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FN2 (K20z4) Rough noise when cold

Hi Guys,

I've tried to get an answer on the Facebook forums buts the issue still isn't fixed so thought I'd ask here:

I've got a 07 FN2 Type R, bone stock, on about 69k miles. Pretty much every morning (or any other very cold starts) it makes an awful grinding sort of sound for about 30seconds to a minute and then it completely goes, replaced with an intermittent pull-like noise.
See video at streamable.com/2si72 Here, also notice the spark toward the end.

Since this video the car has had a new PCV Valve, New Idler Pulley, New Idler tensioner & Pulley and new Aux belt, to no success.

Any help massively appreciated!
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post #2 of 16 (permalink) Old 17th October 2018, 23:29
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Jeez that sounds awful.
I put the link in for you.
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post #3 of 16 (permalink) Old 17th October 2018, 23:38
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Did I see a spark from the pully just at the end of the video?
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post #4 of 16 (permalink) Old 17th October 2018, 23:40
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What on earth is making that noise?

It sounds like it got louder on the pulley side of the block right?

What spec oil are you running?

Does the noise only occur on cold starts?
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post #5 of 16 (permalink) Old 18th October 2018, 06:56
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Definite spark at the end, metal on metal spark,
I'd say definitely pulley related, wheel, bearings, when was the belt last changed
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post #6 of 16 (permalink) Old 18th October 2018, 07:50
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Yup, that's a spark! I would see if there is any play in the top pulley and replace it to start with. Hopefully not the alternator.
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post #7 of 16 (permalink) Old 18th October 2018, 08:37
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As above, looked like a spark from the crank pulley. I'd be checking that first and 100% not driving it as that'll destroy your crank / bearings if it's out of balance mate aswell as be eating away at the block!!

Could be lucky and be a simplier one such as alternator etc but looked like crank from this angle.

Last edited by musegroove; 18th October 2018 at 08:39.
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post #8 of 16 (permalink) Old 18th October 2018, 09:08 Thread Starter
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Its just had the belt, idler pulley and tensioner pulley replaced. They checked the other pulleys over and said they seemed fine. So hard to see anything in these bays too
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post #9 of 16 (permalink) Old 18th October 2018, 10:11
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Was the noise there before replacements
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post #10 of 16 (permalink) Old 18th October 2018, 13:10 Thread Starter
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Yep, we replaced as we thought they were causing it
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post #11 of 16 (permalink) Old 18th October 2018, 20:47
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You could try posting it on TDI norths Facebook page and ask if they have any ideas, they would probably pin point it straightaway
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post #12 of 16 (permalink) Old 18th October 2018, 20:54
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Looks like the pulley is catching the engine mount
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post #13 of 16 (permalink) Old 25th October 2018, 19:01 Thread Starter
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Just gonna give this a little bump, and see if anyone else has any input? TGM can't look at it till the 7th and not sure it'll last that long
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post #14 of 16 (permalink) Old 26th October 2018, 10:43
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Any joy on TDI Norths Facebook page, usually very helpful
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post #15 of 16 (permalink) Old 26th October 2018, 14:19 Thread Starter
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TDI don't know either
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post #16 of 16 (permalink) Old 26th October 2018, 16:12
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Quote:
Originally Posted by BenFN02X View Post
TDI don't know either
Have you checked the air con compressor bearing and clutch plate?

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