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mightyvr6
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Joined: 10 Jul 2016
Posts: 61
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PostPosted: Sat Jul 22, 2017 12:51 pm    Post subject: Clicking/ticking noise Reply with quote

Hi chaps. I've recently been doing some work on the car which included changing the cam cover gaskets, spark plugs, leads, dizzy caps/rotors, all filters and an oil change using titan pro 5w 40. Later I noticed a clicking/ticking sound which appears to coming from the drivers side cylinders so I thought must be a lifter so ive swapped all the lifters. It's still clicking Mad

The noise is faint with the engine cold and more pronounced when hot and rises and falls with engine revs. It's really annoying and wasn't like that before the work started. I'm not sure what to do next. Any advice or suggestions would be appreciated!
Thanks
Ben
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Hockenheim


Joined: 10 Jan 2008
Posts: 649



PostPosted: Sat Jul 22, 2017 2:28 pm    Post subject: Reply with quote

Hi,

Is the noise from the same side and same cylinder? You can usually isolate it using a mechanics stethoscope.

If its not the same cylinder then its a good idea to get it nice and hot holding at differing revs for a period.
 
  
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mightyvr6
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Posts: 61
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PostPosted: Sat Jul 22, 2017 10:17 pm    Post subject: Reply with quote

Sounds like cylinder 4 to me. Difficult to tell.

Here's a video:

https://youtu.be/Ln5q5-fmi6k
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Hockenheim


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PostPosted: Sun Jul 23, 2017 11:53 am    Post subject: Reply with quote

That does sound valve train generated.

It might be worth swapping the lifters just for that cylinder with ones you already have.

Also, are you sure they are the right ones? The Turbo has different lifters and they do ones that are shorter for work carried out on the heads. Make sure all the ones you have are the correct ones for your application.

Hope your get it sorted.

Regards
GR
 
  
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mightyvr6
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Posts: 61
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PostPosted: Sun Jul 23, 2017 2:45 pm    Post subject: Reply with quote

Thanks GR. I used INA 420005210. I was assured these were correct.
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bazhart
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Joined: 20 May 2009
Posts: 796
Location: Bolton Lancashire


PostPosted: Mon Jul 24, 2017 11:18 am    Post subject: Reply with quote

Ticking noises are common with the M96/7 engines but not so much with the 993.

For anyone interested in ticking with a M96/7 engine - it is actually an extremely complex subject with many potential innocent causes (none of which are easy to remedy) and some serious ones that require an engine rebuild to solve.

If you really want to know more and read a very long and complex explanation - E-mail me on baz@hartech.org and I will send you a copy.

I don't have anything similar that refers to a 993 - sorry.


Baz
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Last edited by bazhart on Tue Jul 25, 2017 9:36 am; edited 1 time in total
 
  
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mightyvr6
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PostPosted: Mon Jul 24, 2017 12:49 pm    Post subject: Reply with quote

Thanks Baz. Email sent!
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