Engine noise (yet again) should I even bother or leave it?

arleitiss

Hey, most of you know my story already but anyway car is E46, 318i manual, M43 engine Sedan.

I still keep getting rattle between 3k-4500 RPM.

• There is no power loss (at all)
• Consumption is around 9l/100km
• No warning lights
• New Engine (80k miles on it)
• Timing Chain and tensioner were replaced like 700 miles ago
• No noise at idle
• No burn smells or any smells at all

So the only problem is the sound, it sounds like the chain is about to snap or like chain would be hitting sidewalls or something, so my main problem is noise (which I disable by turning up music).


I mean it's 2001 car, should I even bother furthermore with it or just wait for next year to get new car and write this one off?

Also any ideas what could the noise be?

P.S - The coolant leak was fixed btw, it was water pump, got it replaced for free under warranty as suggested.

PyeContinental

Haven't read your other thread, but this could simply be a case of resonance, also known as sympathetic vibration from some piece of loose metal in your car's chassis or exhaust. It could be something as simple as a loose heatshield over your catalytic converter.

arleitiss

PyeContinental wrote: »

Haven't read your other thread, but this could simply be a case of resonance, also known as sympathetic vibration from some piece of loose metal in your car's chassis or exhaust. It could be something as simple as a loose heatshield over your catalytic converter.

Mechanics said: "we don't know what the problem is", but I think it's engine, they had it up many times and always said its' from bottom of engine.

PyeContinental

Where did the replacement engine come from?

Del2005

Have you had anyone else in the car when trying to source the noise? I'd a rattle in my car and couldn't source it for ages , had a mate in the car and they found it in seconds. Turned out to be a badge for my work carpark rattling on the rear view mirror.

Once you source the noise then you can see if it's worth fixing, you have to find the source as it could be danerous to drive in case it breaks when driving.

arleitiss

PyeContinental wrote: »

Where did the replacement engine come from?

The garage I went to got it, it came with 2 months warranty, but I don't know where from

arleitiss

Del2005 wrote: »

Have you had anyone else in the car when trying to source the noise? I'd a rattle in my car and couldn't source it for ages , had a mate in the car and they found it in seconds. Turned out to be a badge for my work carpark rattling on the rear view mirror.

Once you source the noise then you can see if it's worth fixing, you have to find the source as it could be danerous to drive in case it breaks when driving.

I will try that I guess

PyeContinental

At the rev range when you hear the noise, does it go away if you press in the clutch pedal?

arleitiss

PyeContinental wrote: »

At the rev range when you hear the noise, does it go away if you press in the clutch pedal?

No, even in neutral reaching 3k-4500 it comes up.

visual

if it is still under warranty bring it back asap.

colm_mcm

This is relevant.

Its a bit late now, there was clearly a problem a month ago.

arleitiss, 27th April wrote: »

Okay, I found problem, I lifted car, got under car - it seems like oil pan gasket or around there.

Anyway, quick briefing of recent events:
(Please don't make comments or judgements on my stupid previous decisions, problem is here and how, thank you).

Car got engine replaced with 80k miles on it.
All fine but in 1 months time I started hearing serious chain rattle at around 2500-3000 RPM.
Went to fitters/garage they said it's timing chain so agreed to fix it for free under a "vague" warranty.
One week later (recently), I collect car - rattle continues, nothing changed, only fact or evidence that timing chain kit was installed/replaced is a printed receipt.
Now another week later this coolant leak shows up.



P.S - there is no performance drops besides horrible rattle at 2500-3000 RPM.
+ With new engine I only as quoted by garage "harsh driving" - drove once - that day when engine was replaced, after that I never did it again.

Also they voided my warranty because I reached 5000 RPM before which is a total bull**** to be honest, it's a god damn car not a trolley cart.

So anyways - main question: could problems with timing chain cause coolant leak on oil pan or bottom of engine?


I am not gonna bother investing any thousands into this car again, the most I would do is replace oil pan gasket if it's that and I will do it myself, I just wanna know could timing chain cause this?

Thanks.

http://www.boards.ie/vbulletin/showthread.php?p=90126570#post90126570