e34 diesel , diesel knock

[stukenuk]

hi .diesel knock ,does any one know what is the cause of this and will it have long term affects to my engines life span ???

[Morgenster]

hi .diesel knock ,does any one know what is the cause of this and will it have long term affects to my engines life span ???

I'm assuming you have a diesel engine. In that case: that's how it works. Diesel engines have very high compression and are built to withstand this. That's why they're heavier.

Unless you're referring to something that's going wrong.

Be more specific.

[632 Regal]

what car? where at? fill out some info.