Grinding noise just off idle (video inside)

[ZiMMie]

To can measure the length of it compared to a new tensioner.

[sapote]

100k miles now. I have never changed the tensioner, only the actual plastic guide. I just replaced that over the weekend.

So this new noise happened after you worked on it last weekend? Then you need to remove valve cover and look around.

[sapote]

To replace the upper guide, vanos hub and sprocket were removed, so look them over. Any chances the guide bottom was miss placed on top of the bottom guide?

Edited: I mixed up, and the top guide should be on top of the bottom guide.

[cobra]

To replace the upper guide, vanos hub and sprocket were removed, so look them over. Any chances the guide bottom was miss placed on top of the bottom guide?

Honestly I don't know, I've never really listened that closely. I was listening very closely since doing this work in case I heard any bad knocking and that's when I noticed it.

[sapote]

This just happened after the work done on last weekend?

[Slideways]

Here is another video of a before and after Beisan overhaul:

My guess is it is the VANOS oil pump building pressure. When you spin the oil pump by hand during the rebuild, it makes a similar pumping sound.

[sapote]

Here is another video of a before and after Beisan overhaul:

My guess is it is the VANOS oil pump building pressure. When you spin the oil pump by hand during the rebuild, it makes a similar pumping sound.

It could be the noise of the disk larger holes vs no noise smaller holes.
What included in the overhaul? Anti rattle kit, new small holes pump disk? The pump itself (4 pistons on eccentric shaft) should cause no noise.

[jet_dogg]

I love how vid says repair kits making it sound gradiose when its just orings and a disc.

You can just use oem but have to replace them occasionally due to oring type.

[Slideways]

It could be the noise of the disk larger holes vs no noise smaller holes.
What included in the overhaul? Anti rattle kit, new small holes pump disk? The pump itself (4 pistons on eccentric shaft) should cause no noise.

That is not my video, but it has the full Beisan kit. The VANOS oil pump does make a pumping noise when spun with no oil pressure.

[cobra]

Here is another video of a before and after Beisan overhaul:

My guess is it is the VANOS oil pump building pressure. When you spin the oil pump by hand during the rebuild, it makes a similar pumping sound.

Exactly the same sound, you can hear it before and after on his car.

sapote like I said I am not sure if it made this noise before or not. I probably never paid attention.


Would anyone here with a 100k+ mile car mind taking a video like above and sharing it? Engine should be warmed up.

[lastMleft]

Here is another video of a before and after Beisan overhaul:

My guess is it is the VANOS oil pump building pressure. When you spin the oil pump by hand during the rebuild, it makes a similar pumping sound.

Sound similar to me just a very little bit quieter after.

[jet_dogg]

Exactly the same sound, you can hear it before and after on his car.

sapote like I said I am not sure if it made this noise before or not. I probably never paid attention.


Would anyone here with a 100k+ mile car mind taking a video like above and sharing it? Engine should be warmed up.

Everyone's engine will be in various states of condition and would render any video pointless unless the maintenance was performed exactly as yours.

[sapote]

sapote like I said I am not sure if it made this noise before or not. I probably never paid attention.

I got it now. Normal engine should not have that weird noise.

[cobra]

Bump in case anyone else would like to chime in with other ideas.

I now have 2000 miles since making this thread and the noise is still there exactly the same. Nothing has blown up or changed. Irks me a bit but... I guess it's fine?

[sapote]

Do you have the stock larger disk holes or the new mod smaller pump disk holes for the driving hub tabs?