hello did you find the problem? i restored a complete engine! total! at startup same noise. whistling all the time. i have the impression that it comes from the chain. but the chain is new too.
Hello, I didn't find the exact problem yet, but I am still not done with this issue. I am quite sure that the only possible source is timing chain and specifically two possible sources: 1.) chain being overtensioned from some reason, dont know the reason 2.) the main tension rail where the tensioner is pushing is different between the original 1989 M42 and new OEM BMW one from year 2018+. The shape of the rail is slightly different even though they have the same part number. I will keep trying and I will let you know.
not yet.. but I am not going to give up! I have several parts and methods which I will test and hopefully I will find the reason for the whinning noise. How your noise appeared? Did you change some components of the timing chain assembly? Do you have any ideas?
hello
did you find the problem?
i restored a complete engine! total!
at startup same noise. whistling all the time.
i have the impression that it comes from the chain. but the chain is new too.
Hello, I didn't find the exact problem yet, but I am still not done with this issue. I am quite sure that the only possible source is timing chain and specifically two possible sources:
1.) chain being overtensioned from some reason, dont know the reason
2.) the main tension rail where the tensioner is pushing is different between the original 1989 M42 and new OEM BMW one from year 2018+. The shape of the rail is slightly different even though they have the same part number.
I will keep trying and I will let you know.
@@GreenyCZ Thank you, I will also disassemble the chain to check.
Hey man . I have the same exact issue. Mine sound the same. Did you find out what it was ? Thanks
not yet.. but I am not going to give up! I have several parts and methods which I will test and hopefully I will find the reason for the whinning noise.
How your noise appeared? Did you change some components of the timing chain assembly? Do you have any ideas?
In desperate but now I have my engine opened . I won’t give up and once I will find the problem I’ll come back to you