[leetennis]

Hi all, wish i had more knowledge on this stuff so trying to get my head around this.

My 318d lci, recently had a new clutch and flywheel replace due to judder.

There has been a ticking noise thats been bothering me and finally a technician has recognised it with me.
Sounds like this could be a big job as i have been told i wont see the car til next week. The guy listed a load of things but all i can remember him saying was the cam bearings might have gone.

The car is 1 year old 15000 miles, bought as ex demo after 4500miles. is this a fairly simple common problem or have i got a car built on a fri afternoon?
any help really appreciated
Lee

[m1bjr]

Not common, but you might have a car that was ragged to death when cold on a Friday afternoon.

Cam bearings amongst other things can 'pick up' sometimes just one of those things, but often caused by redline cold starts and the like.

[creepy coupe]

IF- your cars cam bearings have gone, it might have been due to the engine running low on oil, and as these parts are the last to get lubricated, they tend to be the first to suffer.

When they wear prematurely, the clearance between them and the cylinder head or carrier as in your case, opens up, which looses oil pressure to the hydraulic pedestals, which is the most likely cause of the noise.

[willhollin]

Originally Posted by creepy coupe

IF- your car cam bearings have gone, it might have been due to the engine running low on oil, and as these parts are the last to get lubricated, they tend to be the first to suffer.

When they wear prematurely, the clearance between them and the cylinder head or carrier as in your case, opens up, which looses oil pressure to the hydraulic pedestals, which is the most likely cause of the noise.

Took the words right out of my mouth Del.

[leetennis]

Oil levels have always been fine unless thats broke.

Get the full diagnostics soon, bmw are having software issues so havent got the full picture yet.

[leetennis]

Ok have an update, its the cam shaft and bearings, timing gears and chain and some other stuff. Engine needs to be taken out and stripped so im told.

Not happy at all 15000miles and major components failure, cant beleive how much i wanted this car and now how much i dont!

[m1bjr]

Always a risk with demo cars unfortunately.
Have been around enough to see a few clocked back before sale too.
One dealer in the Plymouth area used to lend my company 'demo' vehicles and we had them for months on end.
They were hammered and we saw them sold less 100k on the vans.
Amazing the back-handers that still go on...

Anyhow, at least its a new engine afterwards so will be even better !

[creepy coupe]

Originally Posted by m1bjr

Anyhow, at least its a new engine afterwards so will be even better !

I doubt it, sounds like a new cam carrier, cams & associated parts.

Although I'd be asking where all the swarf had gone and insist on a new engine, I dioubt you'll be that lucky though, was I through a main dealer?

[leetennis]

Yeah car was through main dealer, im actually wrong its the crank shaft, chain and timing gears.

Only just got my head around that the crank drives the cam via a chain, sorry for being a numpty.....

Im actually stamping my feet at the mo and want to get rid of the car, what with the clutch and flywheel replaced and still having probs now all this, the car must have a history

[m1bjr]

Originally Posted by leetennis

Yeah car was through main dealer, im actually wrong its the crank shaft, chain and timing gears.

Only just got my head around that the crank drives the cam via a chain, sorry for being a numpty.....

Im actually stamping my feet at the mo and want to get rid of the car, what with the clutch and flywheel replaced and still having probs now all this, the car must have a history

Yes.
Like I said above.
This is often what happens to cold engine when thrashed.
Especially new one with tight big ends and main bearings that still have high spots.

It will indeed be like a new engine again.
I bought an A3T with similar history, verified to have received a new short engine at 20K.
Took it on a hard life journey to 110k miles, sold it and its still on the road five years after.