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Loud tappet like noises from Engine....

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BMWZ4MC
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Loud tappet like noises from Engine....

Post by BMWZ4MC » Mon Oct 23, 2017 9:02 pm

T1berious wrote: Mon Oct 23, 2017 3:30 pm Well, to the guys who said it wasn't bottom end...

You were right!

Big ends replaced and noise remains. Engine now going to be removed and stripped.

Ouch!
That’s ridiculous. I’d recover the car to a capable ///M specialist.

I think you should open negotiations with your current garage by refusing to pay since they’ve not fixed the problem. Ultimately, paying 50% of the cost to change the bearing shells would be reasonable as it’s preventative maintenance anyway.

Give Phil a call if you’re not too far away:
BMWZ4MC wrote: Sat Oct 14, 2017 12:30 pm I'm in the followers / cams camp. The good news is that the primary failure seems to be the case hardening on the followers, so catching it early and not driving further avoids damage to the cams. If that is the cause, Schrick sell OEM followers to which they apply an additional hardening process. They aren't terribly expensive although I would replace them all. If you need news cams, they are pretty costly and the labour required increases significantly due to the limited access in the Z4M (cf the E46 M3). The job can be done without dismantling the entire front of the car but only by someone who knows what they're doing.
Where are you based? Phil at CPC in Amersham has done this job on several forum cars and many M3s.
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Loud tappet like noises from Engine....

Post by john-e89 » Mon Oct 23, 2017 10:15 pm

Not a nice read at all.
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Loud tappet like noises from Engine....

Post by T1berious » Tue Oct 24, 2017 8:01 am

I think I'm going to call him and ask if he's inspected the valve train.

The whole misdiagnosis thing is a concern but I'm kind of in the preventative maintenance is a good thing boat. Also when the car goes wrong I normally just take it BMW and assume the position. However this time I felt that the saving would be worth it as it was looking like 700-1000.

Now, I'm no so sure....

I'm at the point where I just want it fixed.

Anyone you guys recommend in the Midlands area who can inspect it post repair?

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Loud tappet like noises from Engine....

Post by Monkeydonkeyratmagic » Tue Oct 24, 2017 8:40 am

Doesn't sound internal to me, more like something like a Mani bolt worked it's way loose or a pulley knocking. Does not sound like death rattle at all not metallic enough.
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Loud tappet like noises from Engine....

Post by T1berious » Tue Oct 24, 2017 11:11 am

Mani bolt?
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Loud tappet like noises from Engine....

Post by mmm-five » Tue Oct 24, 2017 11:23 am

T1berious wrote: Tue Oct 24, 2017 11:11 amMani bolt?
I assume it’s short for the exhaust manifold bolt. Although I’ve never seen an issue with one coming loose, normally quite the opposite.
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Loud tappet like noises from Engine....

Post by T1berious » Tue Oct 24, 2017 11:54 am

Cheers :)
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Loud tappet like noises from Engine....

Post by jimmybell » Tue Oct 24, 2017 3:05 pm

+1 for CPC in Amersham, appreciate might not be anywhere nearby but they did the full works on my car solving follower finger wear (and were capable of identifying it very easily).

I'd aim to find someone who has history of investigating this issue in order to confirm/rule it out.

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Loud tappet like noises from Engine....

Post by T1berious » Fri Oct 27, 2017 8:22 am

I'm kind of in the boat I'm in and am adopting the "preventative maintenance" approach to the work being done. Turns out there was a bit of metal in cylinder 4 (how it wasn't destroyed and flushed out the exhaust I have no idea).

But engine in pieces

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Hopefully will be back soon, fighting fit and ready for a Dyno session
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Loud tappet like noises from Engine....

Post by Ewazix » Fri Oct 27, 2017 9:11 am

Where did the metal come from?

I've had similar on one of my other cars caused by a fragment of the plug tip ceramic (actually it was caused by a moronic main dealer tech damaging the old plug on removal, but that's off topic) anyway like yours that one wasn't expelled messing-up the piston and scoring the bore :cry:
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Loud tappet like noises from Engine....

Post by Beedub » Fri Oct 27, 2017 9:36 am

the plugs look in terrible shape....... :!: :!: :!: :!:
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Loud tappet like noises from Engine....

Post by T1berious » Fri Oct 27, 2017 9:40 am

I don't think it was the cause of the issue, but hey we'll see what else he finds. I'll keep you posted
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Loud tappet like noises from Engine....

Post by Mangozac » Fri Oct 27, 2017 10:26 am

Beedub wrote: Fri Oct 27, 2017 9:36 am the plugs look in terrible shape....... :!: :!: :!: :!:
The whole lot looks in poorer shape than I'd have expected. How many miles was it?
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Loud tappet like noises from Engine....

Post by T1berious » Fri Oct 27, 2017 11:31 am

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Loud tappet like noises from Engine....

Post by T1berious » Fri Oct 27, 2017 11:51 am

The question has to be why would it be so bad?
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