M20 rattle at 4k

[itsonlygeorge]

I am not exactly sure what is causing this issue. I have recently adjusted the valves to spec and it didn't make a difference.

Also recently replaced oil pressure switch as the old one started intermittently lighting up. I saw oil flow at all the rockers while doing the valve adjustment. I used a switch to fire the starter for the adjustment.

https://youtu.be/hS6gkrmDDaw

Had similar symptoms to this thread:

http://bmwe30network.net/forums/read.php?3,4580,4631,quote=1#REPLY

Sent from my iPhone using Tapatalk

[varg]

Fan? If the motor moves under acceleration it could be hitting the shroud/radiator, made worse by the fan flexing at higher rpm. Had that happen with my M42 fan.

[itsonlygeorge]

Ill take a look. I will check engine mounts as well. I changed the clutch and oil pan gasket in June, maybe theres some play in them.


Sent from my iPhone using Tapatalk

[itsonlygeorge]

I checked the engine mounts and they are tight, no evidence of the fan hitting the radiator.

like it's a metallic rattle coming from behind the cluster. Not sure what could be causing it. If it was valve related it would be noticeable reving at idle?


Sent from my iPhone using Tapatalk