More m42 engine noise *NOW WITH VIDEO*

[nickmp0wer]

but does yours sound kind of like metal grinding? i might take some gasket sealer and put it between the header and the other pipe

[FrustratedMunky]

I also have that problem. I've posted many times about this problem but i've never gotten an real answer. My noise starts at around 3000rpm also and just gets louder, but really emphasized around 3-4000rpm. I really don tknow what the problem is, it seems like it's coming from the catalytic converter, but then when your under the car it seems to start near the end of the header. THis noise drives me insane, and sometimes i really wanna sell the damn thing b/c of the raspy exhaust sound. It's not a nice raspy, just really annoying. :x . Please someone chime in now.

If it sounds like something's sorta flying around in there, last time that happened to me, my catalytic converter collapsed on itself (crappy quality). But I didn't really get the same symptoms of the RPM's as you, the sound was always there, even at lower revs (just not as loud)

[spud814]

but does yours sound kind of like metal grinding? i might take some gasket sealer and put it between the header and the other pipe

Nope, just sounds very raspy. Like a ZZZZZZZZZZZZZZZ sound. Let me know how the gasket sealer trick works and if it fixed or lowered the noise. Thanks.

[quote = "FrustratedMunky"]If it sounds like something's sorta flying around in there, last time that happened to me, my catalytic converter collapsed on itself (crappy quality).[/quote]

I went under the car and knocked on the cat. and nothing inside was loose or making any noise.

[/quote]

[nickmp0wer]

well i reved the engine from the engine bay and i really dont think we have the same problem. Mine sounds like somthings grinding or rattling really bad. I cant seem to capture the sound though even with my dads camera. Im gunna be changing the oil soon so i'll take out the tensioner then and make sure i put it in right and stuff. Maybe its fualty?

[kowalski]

the grinding im pretty sure is a bearing or somthing i have it too i duno what it is tho, water pump?

[nickmp0wer]

i might have to swallow my pride and take it in to a shop

[kowalski]

haha well let the rest of us know what it is if you do:)

[nickmp0wer]

well i changed the oil(to the same 5w30) and filter hopping for the noise to be gone but it wasnt. I would like to take out the tensioner but i dont think i will be able to get it back in. I might try some 10w

i just relized this is probably the timing chain, fuuuuuuuuuuuck

i think me and this guy have the same problem

http://www.r3vlimited.com/phpBB2/viewtopic.php?t=18852

[spud814]

If it is the timing chain, http://www.esatclear.ie/~bpurcell/31...ml#timingchain

has a good description for that problem. I took out my timing tensior before and i was able to put it back in no problems. If you think it's the chain, i would change the tensioner first, it's liek 40bux from BMA and it's easy, un-screw cap and change the tensioner and tighten screw/nut cap and turn on the motor to let the oil uncompress the tensioner. Done.

[nickmp0wer]

ive already done the tensioner, but im hoping its fualty. wasnt it hard to press back into the hole becasue of the tension? If not i will switch them back and see if it still makes that same noise

the car has 134k so i would think the chain would have already been replaced

i guess i might go buy some 10w tmr.

[spud814]

If your tensioner is new, no need to check it.

[nickmp0wer]

well id just like to switch it back with the old one to make sure its not defective or something

[BavarianBimmer]

That noise is normally on a M42 engine
My 2 M42's makes the same noise and it's discribed on www.318is.de
rattling noise around 3-4k rpm

[FrustratedMunky]

That noise is normally on a M42 engine
My 2 M42's makes the same noise and it's discribed on www.318is.de
rattling noise around 3-4k rpm

I wish I could read that.

Maybe it's because both your tensioners need replacing? It sounds like all M42's eventually have that problem.

[nickmp0wer]

im pretty sure its the timing chain [points gun to head]