PDA

View Full Version : Valve Noise from E39 - 540IA - 1997


mz3bo
09-10-2004, 03:31 PM
Hi, our 1997 540iA with 190 000KM makes a lot of noise from the engine when the car is running. It sounds like the valves are making a "click clikc click" noise when I pull at low rpm from a start (from 1000 to 3000rpm). I use to have a honda a long time ago and it was possible to adjust the valves by tightening them... Is this something possible with the 540i ?

Thanks

Fern
09-10-2004, 06:40 PM
The M62 engine has

Self adjusting hydraulic lifters and the valves should never need adjusting...

This noise maybe something else, ie: piston slap or valve guide wear...

Have an experienced service tech listen to it.

Does it make the same noise while idling at optimum operating temperature?

mz3bo
09-10-2004, 06:47 PM
Hello,

The noise "almost disappear" when the car get's real hot.

mclaren55
09-11-2004, 01:39 PM
I just had a new engine put in, I scuffed a few rod bearings. (worn out). Got a new motor, problem solved. Another 540 was in there for the same thing.

Fern
09-11-2004, 06:59 PM
Originally posted by mz3bo
Hello,

The noise "almost disappear" when the car get's real hot.

MZ3BO,

its interesting that you note, the noise disappears when the engine is hot..

I presume the oil level is o.k.?

May even be an oil starvation issue...
I heard of a guy who had the same noise on his Porsche 911 and the service tech just drove it around in 1st and 2nd gear until the blockage loosened,

then,

changed the oil.

I still feel you should have a professional listen to it.
If it is rod bearings, it can be quite costly and I have had cars in the past with this problem (really isn't a bid deal) and I have driven the cars up to 300,000 + km. I refer to it as a loose piston rod...

Here's an idea, listen to the engine from under the car (near the front wheels) where the block is and see if the noise is more pronounced... If so then more likely than so you have a loose rod.

On occasion I have the a slight similar sound on my 540.

Cheers,

Fern

mz3bo
09-11-2004, 11:44 PM
Hello,

Thanks for answering. However, the sounds is not "present" when the car is ideling. It's only when you pull slowly from a start when the engine is cold (when it's hot, the sound "almost disappear"). Also, the oil level is excellent.

///Greco540
09-13-2004, 11:32 AM
sounds like oil starvation, I had a similar sound on the passenger side bank, lick a clicking sound, almost like the valves were slapping. Changed the oil now its gone....

mz3bo
09-13-2004, 11:42 AM
Hey bill,

The oil is new but clicking sound still there....

///Greco540
09-13-2004, 04:46 PM
Bo,

I'd get it checked out. I just spend $800 on balljoints, trunk actuator, oil change, and trim repair....

windwagen
09-20-2004, 12:51 AM
Is it noisy only when you step on the gas? A leaky exhaust manifold (header) gasket will make a ticking sound every time that cylinder fires (speeds up with engine speed) under load. Also, it is very common for the noise to dissappear when the engine is warm because the metal exhaust manifold expands and seals up the leak. A bad valve/lifter will be noisy all the time.

everlast
09-20-2004, 06:50 PM
I was thinking that too.. exhaust leak. Perhaps its a slight predetonation also? What gas do you run?

crazyvadim
09-24-2004, 08:31 AM
Try using thinner oil next oil change