I bought my 96' 318i last year, the car has been good to me. It's my first bimmer that i've ever owned. And to tell you the truth i had no idea i was buying a "lower version" BMW. Anyhow..........My problem is this. The ONLY thing that annoys me is the engine/exhaust noise when accelerating.
it's a mixture of raspy, scratchy and a hint of rattle. . I've stuck my head out the window as i accelerate and i know it's not the muffler or the engine. It's somewhere between the stock header and muffler. Maybe the catalytic converter? Then i peeked under the car and saw that there is 3 chambers. Resonator, Cat, ???
If this is the source of the problem. Could i just eliminate that and have a custom straight pipe made from the header to the muffler?
Could be the CAT?.....if its bad the combs inside prolly broke apart and is rattling inside the catchamber etc. trying jacking the car up and bang on the cat to listen for broken/loose particle. or maybe you need a valve job.....whatever you do I wouldn't recommend taking the cat out for a straight pipe unless you like it even louder raspy noise...people might mistake you for a CIVIC driving behind them....heheheheehheheehehehehe.....
how much does a valve job for a 318i run? or how easy would it be to do? Like i mentioned before i was into the import scene for a while, then after i turbo charged my Integra i got tired and sold it. So all this is new to me.
Valve Job, Hmmmm not sure how much? Since your is a 4cyclinder it shouldn't to be too much BUT it is a BMW might cost you hmmmmmmmmmmmm 2 arms and one leg...hhehehehehe I dunno.......somebody help this kat out....................sorry I don't know might but change oil..
Originally posted by SinSeven@Apr 23 2004, 05:55 PM Are there any other 318 owner out there with this problem? it seems that this is some kind of situation with 318's. Cause i also notice it on 318's around town too? Am i right?
Yes I have been moticing that on my car as well. I cant hear it with windows closed, but as soon as they roll down it sounds horrible. Another weird thing is that since the 318 stock exhaust isnt the greatest, if you stand behind the car and have somebody rev it a bit, it sounds like its farting. Thats the closest word I can use to describe it.
But back on topic, my brothers Lexus gs400 was making that same rattling noise as well and he took to dealership and they took out the heat plate and its fine now. Charged about 125 for that though
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