Slurpy noise from exhaust? - BMW Forum - BimmerWerkz.com
3-Series (E36) Chat relating to the BMW 3-Series from 1992-1999. Autodoodad Specific models include: BMW 316i, BMW 318i, BMW 318iS/ti, BMW 320, BMW 323, BMW 320, BMW 324, BMW 325, BMW 328.

 
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#1 (permalink) Old 09-17-2004, 05:33 PM
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You know how when you go between medians on the highway you can hear every noise your car makes?.... Well when i first bought my car a few months ago I noticed a slurpy noise coming from my exhaust ( like when you are down to the end of a pop from mcdonalds through a straw).... I got my car in the air with it running and found some leaks in the resonators and welded them shut. This cured the problem a lot but not completely. At the same time I noticed the guts in my muffler were shot so i figured the rest of this noise was caused by the blown muffler. I then put an m3 muffler on. Exhaust note got quieter but slurpy noise still there (I do not like the quiet note by the way). Since then i have had the car in the air again with the exhaust dropped down on a transmission jack so i could feel the top for leaks. I could not find any leaks from the manifold back. I passed e check so i do not think the cats are rusted out (they could be though). Since I did patch up holes in the resonators they might be rusted inside but why would the exhaust note be so quiet? I feel like this sound is the cause for the sluggishness of my 93 325is. Any input is appreciated.

92' 626 ES
88' Mazda Truck
92' VW passaat (sold)
93' BMW 325is
86' BMW 318is
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#2 (permalink) Old 09-17-2004, 05:38 PM
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OMG.. sounds like your car needs a new Cat back exhaust system... it would probably save you a head ache.... good luck...

slurp away,

Les


1997 E36 M3 1990 E30 325i
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#3 (permalink) Old 09-18-2004, 08:54 AM
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already did the cat back... it is in the post

92' 626 ES
88' Mazda Truck
92' VW passaat (sold)
93' BMW 325is
86' BMW 318is
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#4 (permalink) Old 09-19-2004, 12:51 AM
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hey it sounds like i got the same problem with my car. i've got a 94 325is. and when i let it sit there and idle, you can hear that gurgly noise. it kinda has a very low bassy popping sound. it makes me think the engine is running rough and leads me to thinkin that i've got a prob with my fuel inj system. my car hesititates sometimes too. so i've got now clue what the problem is. i guess i'll be taking it to my mechanic soon. i've changed the plugs and stuff. so i know its not them too. well hope you find out whats wrong. if you do let me know please. -Thanks
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