Engine Rattling Sound Under Load

[jep]

Hi all, Need some help figuring this out. My 520i e28 makes a rattling sound when under load. (e.g. when I go up a hill, and gear is too high). When cruising on level road, the rattling sound takde. I was told that it is most probably air-fuel mix needs to be reset (or something to that effect). Is this correct? And can this condition effect power and fuel consumption? And if this is true, can I have any (decent) mechanic readjust the mixture/fuel injection or must I look for a qualified/official bmw workshop/mechanic, to do it? Was told it shouldnt cost more than RM100. Your wise words would be greatly appreciated.

 

[pussy]

hmmmnn... funny, i had that too..until a mechanic settle that for me.. now car okay..

 

[jep]

So, correct lah what I've been told? It really is the air-fuel mixture?

 

[pussy]

not so likey... need to get your timing right, air slide valve right, then Co right..

 

[jep]

I see. thanx. So I suppose I should send to proper BMW-experienced mech then?

And need to ask, how much RM did it take to fix yr car?