Loud tappet like noises from Engine....
- Thread starter T1berious
- Start date
T1berious said:
Heard very little in the way of useful diagnostic info from this garage so far. Before they remove the engine, you need to hear, explicitly:
- Bottom end bearings inspected - shells worn but not spun. Bottom end crank, rods etc undamaged. Shells replaced
(at this point you are still OK, economically, as bearing shell proactive maintenance is a good move and you have an invoice plus bill of materials that looks sensible)
- Top end inspected. Valve clearances within tolerance and/or adjusted back into spec. No damage to valve train, springs or seats, or excessive wear of cam followers or lobes
Even after all that you'd still want them take another look at ancillaries, Vanos etc before yanking out the engine.
Don't let them spend your money based on a hunch. That's our job.
Ducklakeview said:
Erm...
Sorry but I called top end on day one!
I really don't know how these "specialists" can call themselves so, if they can't get basic diagnosis right..
I feel for you OP..
And WTF do they want to pull the motor for?
Mike
Op....
Did they actually show you any of the shell bearings,or that there was anything actually wrong with the bottom end..?
Whats the situation with the misdiagnosis,do you have to pay ?
When you posted the video,it sounded just like cam follower wear to me as i said early on,but its so hard to diagnose a noise on the net.
Again its all speculation, but when building an S54 there are certain criteria that must be checked and checked again. Tolerances are fine and if build processes are not adhered to then you get problems down the line.
So........... Its either top end,which will be very easy to see,and if they have done the valve clearances as instructed then they should have seen it..
Or........ The crank is oval and they havent measured to check
Or......They havent used Plastique to size the bearings and fitted the wrong size
Or...... Used a damaged rod in the build,and its immediately damaged the bearing shell.
Good luck with it,i feel for you..
You aint the first or the last thats encountered these problems with the S54....
Did they actually show you any of the shell bearings,or that there was anything actually wrong with the bottom end..?
Whats the situation with the misdiagnosis,do you have to pay ?
When you posted the video,it sounded just like cam follower wear to me as i said early on,but its so hard to diagnose a noise on the net.
Again its all speculation, but when building an S54 there are certain criteria that must be checked and checked again. Tolerances are fine and if build processes are not adhered to then you get problems down the line.
So........... Its either top end,which will be very easy to see,and if they have done the valve clearances as instructed then they should have seen it..
Or........ The crank is oval and they havent measured to check
Or......They havent used Plastique to size the bearings and fitted the wrong size
Or...... Used a damaged rod in the build,and its immediately damaged the bearing shell.
Good luck with it,i feel for you..
You aint the first or the last thats encountered these problems with the S54....
Z4M-2006 said:
As above, these are not only common sense when building ANY engine, they are "basic skills" in the field,
As such, if I was the OP I would be taking it elsewhere..
Mike
T1berious said:
OMFG!!! The overwhelming view from your vid was top end. And the bottom end has been worked on and the noise is still there. I am pretty speechless. You must get evidence that the bottom end had failed, something otherwise are you being taken for a ride by someone guessing?
Is this where there was wear to the bearing shells, as they usually is, and they put the diagnosis on that?
TBH when I first had my engine diagnosed I spent the 1 hour labour charge at a MAIN F****ING DEALER who told me I just needed the clearances done, and never spotted the cams and followers were in a state and ticking. These issues seem to sometimes be missed, but this situation seems either a tragic mess or something else going on.
T1berious said:
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 said:
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?
Cheers
T1b
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?
Cheers
T1b
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.
+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.
JB
I'd aim to find someone who has history of investigating this issue in order to confirm/rule it out.
JB
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
Hopefully will be back soon, fighting fit and ready for a Dyno session
But engine in pieces
Hopefully will be back soon, fighting fit and ready for a Dyno session
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
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
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