after engine repair a knocking sound... - BMW Forum - BimmerWerkz.com
3-Series (E21, E30) Chat relating to the BMW 3-Series from 1975-1983 and 1984-1991 line. Specific models: BMW 315, BMW 316, BMW 318, BMW 318i, BMW 320/4, BMW 320i, BMW 320/6, BMW 323i, BMW 320i. E30 Family models include: BMW 325e, BMW 325i, BMW 325is, BMW 325ix.

 
LinkBack Thread Tools Display Modes
#1 (permalink) Old 08-21-2008, 01:57 PM
n00b
 
Join Date: Jul 2006
Posts: 27
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
91 325ix is on a distinguished road
(Thread Starter)
after engine repair a knocking sound...

couple of months ago my car(1991 325ix) jumped the timing belt and bent all 8 intake valves. today i got the car back but came with a notorious knocking sound coming from the head near the firewall. sounds like something is hitting the valve cover but the mechanic told me he had taken of the valve cover to see if it stopped but it didn't. the engine feels strong, no smoke coming from anywhere, it actually runs really smooth. what can be causing this knocking.

also the windows and the a/c stopped working, there's no power on those fuse sockets. could this be a relay problem or maybe something got disconnected during the engine job.

thanks in advance
91 325ix is offline  
Sponsored Links
Advertisement
 
#2 (permalink) Old 08-21-2008, 09:58 PM
Im Bluffin With My Muffin
 
AlpineSixAndSeven's Avatar
 
Join Date: Nov 2006
Location: Palo Alto, CA
Posts: 5,992
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
AlpineSixAndSeven is a splendid one to behold AlpineSixAndSeven is a splendid one to behold AlpineSixAndSeven is a splendid one to behold AlpineSixAndSeven is a splendid one to behold AlpineSixAndSeven is a splendid one to behold AlpineSixAndSeven is a splendid one to behold AlpineSixAndSeven is a splendid one to behold
Send a message via AIM to AlpineSixAndSeven
..... send it back and have them fix the windows and A/C if they worked before they did any work on it(Shop did it right??) is the knocking High like a ticking or a low knock like hammering you sad it sounds like something is hitting the valve cover? can you feel it?

1991 Ford Taurs SHO 5 Speed White on Tan
1996 Chevy Lumina LTZ Rep 3.4L
1992 318i Coupe parts car
1992 325i Ls1 swap with a T56 6 speed 12.2 quarter mile
1976 Mercedes Benz 300D with a Ford 5.0L Fuel Injected soon to be Modded
I am Captain Obvious
AlpineSixAndSeven is offline  
#3 (permalink) Old 08-22-2008, 01:16 AM
n00b
 
lwvseabee's Avatar
 
Join Date: Aug 2008
Location: North carolina. winston salem
Posts: 13
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
lwvseabee is on a distinguished road
maybe you have a bad lifter. if youve driven it much it should of pumped up. so bad lifter is just a though if you. since you said it sounded like the sound was comming from the head
lwvseabee is offline  
#4 (permalink) Old 08-22-2008, 01:19 AM
Im Bluffin With My Muffin
 
AlpineSixAndSeven's Avatar
 
Join Date: Nov 2006
Location: Palo Alto, CA
Posts: 5,992
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
AlpineSixAndSeven is a splendid one to behold AlpineSixAndSeven is a splendid one to behold AlpineSixAndSeven is a splendid one to behold AlpineSixAndSeven is a splendid one to behold AlpineSixAndSeven is a splendid one to behold AlpineSixAndSeven is a splendid one to behold AlpineSixAndSeven is a splendid one to behold
Send a message via AIM to AlpineSixAndSeven
.... If I recall right It is a over head cam that doesn't have lifters just a cam and rockers... Another question is did they adjust the valves to the correct spec?

1991 Ford Taurs SHO 5 Speed White on Tan
1996 Chevy Lumina LTZ Rep 3.4L
1992 318i Coupe parts car
1992 325i Ls1 swap with a T56 6 speed 12.2 quarter mile
1976 Mercedes Benz 300D with a Ford 5.0L Fuel Injected soon to be Modded
I am Captain Obvious
AlpineSixAndSeven is offline  
#5 (permalink) Old 08-22-2008, 11:21 AM
n00b
 
Join Date: Jul 2006
Posts: 27
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
91 325ix is on a distinguished road
(Thread Starter)
Quote:
Originally Posted by AlpineSixAndSeven View Post
..... send it back and have them fix the windows and A/C if they worked before they did any work on it(Shop did it right??) is the knocking High like a ticking or a low knock like hammering you sad it sounds like something is hitting the valve cover? can you feel it?
if I touch the valve cover I can feel a little knock but as I said before the engine still made the sound with the valve cover off.

about the valve adjustment I'm pretty sure he did it right, this mechanic have worked on all of our cars for many years. he told us that he tried to find the reason for the knocking but came up empty.

Any input on the relays..??

thanks again
91 325ix is offline  
#6 (permalink) Old 02-10-2009, 08:31 PM
n00b
 
Join Date: Feb 2009
Posts: 1
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
e30forever is on a distinguished road
Lightbulb knocking noise

i recently purchased a 1989 325 touring and when coming up through the revs it developed a knocking fron the front passenger footwell. It turned out to be water pulsing violently in the matrix. On further inspection it was the head gasket starting to weep
e30forever is offline  
#7 (permalink) Old 02-10-2009, 08:49 PM
2nd Gear Member
 
Join Date: Oct 2008
Posts: 493
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
silversled can only hope to improve
first of all, you don't have 8 intake valves. Secondly, they are solid lifters, not hydrolic. sounds to me like your mechanic is a tool....
silversled is offline  
#8 (permalink) Old 02-10-2009, 08:53 PM
2nd Gear Member
 
Join Date: Oct 2008
Posts: 493
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
silversled can only hope to improve
water pulsing violenty in the matrix? are you the mechanic? wow, this is probably the best one i've seen yet...no kidding
silversled is offline  
Sponsored Links
Advertisement
 
Reply

  BMW Forum - BimmerWerkz.com > BMW Model Specific Forums > 3-Series (E21, E30)


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
knocking sound from valve cover e34 525i 1994 earnestlewis 5-Series (E12,E28, E34, E39, E60) 2 04-27-2008 05:32 PM
knocking sound ??????? 325IConvertible 3-Series (E36) 3 03-27-2007 08:05 PM
Bad Knocking/Rattling Sound JoeMadoo 3-Series (E21, E30) 13 05-10-2006 05:07 PM
Bottom of engine knocking NEED HELP!!! Bleier325 3-Series (E36) 6 02-26-2006 12:15 PM
Knocking Sound theruss1an1 3-Series (E36) 5 02-22-2005 10:31 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