Popping Sound Out Of 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.

LinkBack Thread Tools Display Modes
post #1 of 3 (permalink) Old 09-21-2004, 05:15 PM Thread Starter
1st Gear Member
abemcclellan's Avatar
Join Date: Aug 2004
Location: Oklahoma City
Posts: 263
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
abemcclellan is an unknown quantity at this point
(Thread Starter)
Thumbs up

i have an 94 325is and i've changed the plugs, and checked the plug wires, and changed the fuel filter. and i still have a bad idle and it soulds like it still missfires and the engine stumbles when it does make the popping sound. i put new bosch plugs and tightly in but not too tight. i need help and any suggestions on what my problem is. -Thanks
abemcclellan is offline  
Sponsored Links
post #2 of 3 (permalink) Old 09-21-2004, 08:42 PM
bitcore's Avatar
Join Date: Jan 2004
Location: High Point, NC
Posts: 2,907
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
bitcore will become famous soon enough bitcore will become famous soon enough
There's a specifc torque that you are suppose to apply to the plugs to seat them properly. Do you have a torque wrench or can you borrow a buddys? I don't know it off hand but I'm sure someone in here will chirp up.

I can't really help you out much... but popping exhaust sounds like a simple backfire to me, unburnt fuel is entering the exhaust, which can probably mean you arn't getting full spark in one or two of the cylunders, sending the fuel inside the exhaust where it ignites and creates a loud pop.

bitcore is offline  
post #3 of 3 (permalink) Old 09-22-2004, 02:17 AM
3rd Gear Member
kestrel325is's Avatar
Join Date: Jun 2004
Location: Henderson, NV
Posts: 609
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
kestrel325is is an unknown quantity at this point
Have you checked the gaskets on the exhaust system? This can lead to backfiring, and the like.
kestrel325is is offline  
Sponsored Links

  BMW Forum - BimmerWerkz.com > BMW Model Specific Forums > 3-Series (E36)
Gear in this thread - Powered by O'Reilly Auto Parts

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
User Tag List

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

Similar Threads
Thread Thread Starter Forum Replies Last Post
Loud exhaust sound at 20 or 25 mph koolkat1973 M-Series (M1, M3, M5, M6) 2 08-14-2004 09:36 PM
Exhaust popping 323isnKS 3-Series (E36) 8 07-24-2004 10:29 PM
exhaust sound from my 318... brien4787 3-Series (E36) 15 07-20-2004 01:06 PM
Ticketed for loud exhaust in California? Silver4evr Bimmer Talk/Motorsports Talk 0 06-23-2004 05:03 PM

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome