E30 M3 pinking...
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Category: Technical & Model Specific Forums
Forum Name: BMW ///M Power
Forum Discription: Ask your BMW M Power Technical Questions here (M1, M2 hybrids, M3, M5 & M6)
URL: http://www.bavarian-board.co.uk/forum_posts.asp?TID=33241
Printed Date: 09-May-2024 at 10:47
Topic: E30 M3 pinking...
Posted By: Jonners
Subject: E30 M3 pinking...
Date Posted: 08-September-2006 at 13:46
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After the starter motor saga (see separate thread) the car's back on the road and it passed its MOT yesterday
Yippee - not having driven it for a while and not having much time I took it for a gentle trundle around Richmond Park with the sun roof open Negotiated a speed bump in the usual way and not having driven the car for a while forget how much you need to stir the gear lever on these cars .....damn thing starts pinking Now it seemed to stop very quickly but I thought anti knock sensors stopped detonantion long before it is audible Is there an anti knock sensor connection I might have disturbed whilst changing the starter?? It's an Evo Sport so always run on ordinary unleaded - never had pinking before but then agai I've hardly ever had the sunroof open.... Any ideas anyone?? Cheers |
Replies:
Posted By: M3Nally
Date Posted: 08-September-2006 at 13:50
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I don't think they have knock sensors, too old!
Could be a loose nut on the exhaust manifold. ------------- E30 M3 Macao blue metallic Evolution 2 E39 530d Sport Auto, Aegean blue Edition, Sat Nav, TV, comms pack etc. E39 540i Auto, Sat Nav, TV, leather, luxo barge |
Posted By: 215DMX
Date Posted: 08-September-2006 at 14:26
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Anti-Knock ! blimey if anybody could get that to work on the S14 engine,
give them a medal. These cars never had anti-knock, wouldn't work anyway. Suggest you have bad fuel. Try using super. My engine for eg, runs so much better on ESSO super than anything else. I too had a pinking issue once with Optimax! |
Posted By: Jonners
Date Posted: 08-September-2006 at 15:02
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blimey - never ocurred to me that it didn't have anti knock...
...even tho designed in early 80's it's like the space shuttle compared with what i'm used to.... Not sure about the exhaust manifold - definitely pinking Could be fuel - it's been standing for quite a while |
Posted By: maxfield
Date Posted: 08-September-2006 at 16:16
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My dad had a little pinking but this was the day after filling up with diesel. Use the best petrol you can find ------------- 
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Posted By: Fushion Julz
Date Posted: 08-September-2006 at 17:12
Space shuttle is an 80s design, too.... ------------- 1987 E30 M3 1996 E36 328i SE 4dr (Manual) 1992 E34 525iX Touring...SOLD |
Jonners wrote:Posted By: Dannyboy
Date Posted: 08-September-2006 at 19:05
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space shuttle was designed in the 70's ------------- 1992 clio 1.8 16V Good 1998 Subaru Impreza Turbo Terzo Great 1987 M3 Diamond Black Awesome (Now awesomer with Billys & Eibach) |
Posted By: UweM3
Date Posted: 08-September-2006 at 20:20
I had pinking issues with Optimax as well. And even the V-Power "FERRARI" fuel is pinking alittle bit. Car runs fine on TOTAL's excellium..... How "old" is the petrol in your tank? You mentioned not having used the car for some time. ------------- E61 520d, slow and buzzy but my wallet likes the mpg..... |
Posted By: SHEPSM3
Date Posted: 09-September-2006 at 15:26
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Hate to say it but old Montego and Meastros had knock sensors back in 1983/4! The ECU's would constantly run as much ignition as possible untill it detected pinking, then back it back for a few revolutions, then creep back up again. They were all full of nastyness! EDIT: Jonners, maybe you should have crushed the banger! ------------- [IMG]http://i4.photobucket.com/albums/y135/ShepsM3/New-1a1.jpg">[IMG]http://i4.photobucket.com/albums/y135/ShepsM3/New-1b1.jpg"> |
As others have said, I'd try different fuel first, but run it out of the old fuel before you do and change the fuel filter aswell.Posted By: UweM3
Date Posted: 10-September-2006 at 19:17
Go and buy one if you are loving them so much. But they didn't come with an anti cry sensor 
The M3 therefore comes with a ear to ear grin sensor 
...and somebody who could manage in 1986 to squeeze almost 85bhp/liter out of a (reliable!!) production engine doens't need a knock sensor, don't you think?? ------------- E61 520d, slow and buzzy but my wallet likes the mpg..... |
Posted By: SHEPSM3
Date Posted: 10-September-2006 at 20:12
------------- [IMG]http://i4.photobucket.com/albums/y135/ShepsM3/New-1a1.jpg">[IMG]http://i4.photobucket.com/albums/y135/ShepsM3/New-1b1.jpg"> |
Not loving the Maestro/Montego but loathing them, I wouldn't have one of those if it was given to me (Maestro MG Turbo with zero miles perhaps, but even then it would be rotten out Posted By: Jonners
Date Posted: 11-September-2006 at 10:08
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Filled up this weekend with Optimax - sorry! V-Power
No pinking at all - had a great time Have never used anything other than ordinary 95 before but perhaps it was the old fuel in the tank - but then again that had only been in there for about 3 months Will try 95 again and see what happens |
Posted By: SHEPSM3
Date Posted: 11-September-2006 at 11:36
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Thats great news! Cheap repair! ------------- [IMG]http://i4.photobucket.com/albums/y135/ShepsM3/New-1a1.jpg">[IMG]http://i4.photobucket.com/albums/y135/ShepsM3/New-1b1.jpg"> |