Hello All,

I have an Defi EGT installed in my exhaust mani and it is cross threaded at the moment so I think I have to tap new threads and reinstall. But I am curious if the EGT probe vibrating could cause the car to pick up knock?

It does vibrate audibly at around 3K rpms under load. I can't replicate the sound in neutral for some reason. Kind of a metallic grinding noise. Anyway I am curious if anyone thinks this could be the source of my knocking issues.

Thanks in advance.

-Ken

 

Definite possibility.

 

So it's loose?

If it is, why not pull it out, plug it, and gather some logs?

 

How are you montoring knock? Fix the exhaust leak ASAP, as pre-turbo exhaust leaks can induce knock....for sure!

 

I got nothing to plug it with unfortunately. What I am going to do is since the defi sensor has a threaded sleeve, I am going to get the sleeve welded to the exhaust mani to seal it. Then I can still remove the sensor from the sleeve if i need to. ughhh so many issues lately.

 

just pick up a short bolt from home depot