Timing chain issue ?
- Thread starter jnwright71
- Start date
jnwright71
Member
Hi All,
Thanks for the feedback thus far and to Justin for his post.
The DISA on the N52 is a slightly better deign than earlier engines in that there is no metal pin that can work lose and drop into the engine - positive development from BMW
Unfortunately, the new style DISA is still prone to wear as the plastic flap is an interference fit onto a metal shaft, so doesn't really fail (as in falls apart), but the wear can cause the flap to vibrate on the shaft and 'rattle'
Also, there have been cases where the shaft drops allowing the flap to come loose and even come off the shaft completely. No evidence of the loose flap then being ingested though.
I am hoping to help Justin get this diagnosed over the coming days, so that it can be fixed and he can start properly enjoying ownership. Hopefully a local master tech will be looking at it over the weekend to confirm the problem. However, any further thoughts / advice from you very knowledgeable folks would be welcome as the master tech may not be available.
Z4M-2006, thanks for the offer. I notice you are in High Peak, so a bit of a trek. However, I have a video of the noise, but cant work out how to upload. If OK, please can you PM me your e-mail address and I will send a link to you.
Cheers, James
Thanks for the feedback thus far and to Justin for his post.
The DISA on the N52 is a slightly better deign than earlier engines in that there is no metal pin that can work lose and drop into the engine - positive development from BMW
Unfortunately, the new style DISA is still prone to wear as the plastic flap is an interference fit onto a metal shaft, so doesn't really fail (as in falls apart), but the wear can cause the flap to vibrate on the shaft and 'rattle'
Also, there have been cases where the shaft drops allowing the flap to come loose and even come off the shaft completely. No evidence of the loose flap then being ingested though.I am hoping to help Justin get this diagnosed over the coming days, so that it can be fixed and he can start properly enjoying ownership. Hopefully a local master tech will be looking at it over the weekend to confirm the problem. However, any further thoughts / advice from you very knowledgeable folks would be welcome as the master tech may not be available.
Z4M-2006, thanks for the offer. I notice you are in High Peak, so a bit of a trek. However, I have a video of the noise, but cant work out how to upload. If OK, please can you PM me your e-mail address and I will send a link to you.
Cheers, James
Cheers all for the support here. Life's too short and all that.
Hi PH001. To answer your question. Not really like the second rattle. From cold the engine sounds totally normal. Even when the engine initially reaches operating temperature there is only a slight hint of the noise when the revs rise. But when properly warmed, gauge still in the middle of course, there is no noise at idle, but a hideous one when you apply the revs, say from 2000-2500?
How can that be? Not sure how to post the vid but will have a look.
I bought a six cylinder engine for the sound. But this noise is somewhat spoiling my early love affair...
Hi PH001. To answer your question. Not really like the second rattle. From cold the engine sounds totally normal. Even when the engine initially reaches operating temperature there is only a slight hint of the noise when the revs rise. But when properly warmed, gauge still in the middle of course, there is no noise at idle, but a hideous one when you apply the revs, say from 2000-2500?
How can that be? Not sure how to post the vid but will have a look.
I bought a six cylinder engine for the sound. But this noise is somewhat spoiling my early love affair...
Cooky3 said:Cheers all for the support here. Life's too short and all that.
Hi PH001. To answer your question. Not really like the second rattle. From cold the engine sounds totally normal. Even when the engine initially reaches operating temperature there is only a slight hint of the noise when the revs rise. But when properly warmed, gauge still in the middle of course, there is no noise at idle, but a hideous one when you apply the revs, say from 2000-2500?
How can that be? Not sure how to post the vid but will have a look.
I bought a six cylinder engine for the sound. But this noise is somewhat spoiling my early love affair...
I can't help thinking its just something simply resonating at a certain rpm like a heatshield or something?? The N52 is a reliable lump, I can't see it being anything major. It could be worthwhile getting under the car with the undertray off while someone sits in and revs it.
All you need to do on Youtube is sign in and you will then see an upload video option.
Cooky3 said:I have just found this on YouTube. The same issue I have it seems and possibly an oil filter problem. Really?
https://youtu.be/KXbAg90G7tY
Tried posting my vid - just need to find it now
Worth putting in a new OEM filter, its cheap place to start and could be a cheap fix
jnwright71
Member
Hi All,
The Z is now back at mine as Justin is away and will get a new filter in the morning and a full check over to ensure this isn't a heat shield or exhaust issue (have access to a 4 post lift - ).
Fingers crossed...
Cheers, James
The Z is now back at mine as Justin is away and will get a new filter in the morning and a full check over to ensure this isn't a heat shield or exhaust issue (have access to a 4 post lift -
).Fingers crossed...
Cheers, James
jnwright71
Member
Z4M-2006,
Video clip sent by WeTransfer. Your thoughts would be really appreciated.
Thx, James
Video clip sent by WeTransfer. Your thoughts would be really appreciated.
Thx, James
