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Old 12-28-2012, 04:27 PM   #3
jfoj
Registered User
 
Join Date: Nov 2009
Location: Fairfax, VA USA
Posts: 10,131
My Ride: '06 330CiC, '03 M5
DISA visual inspection is not enough.

You will likely need a DISA O-ring, but you should read the first link below in my signature.

If you only have misfires at cold start or at idle, not likely you have serious secondary ignition problems, likely lean air/fuel mixture issues.

That being said, no substitute for fresh plugs and coil boots to start out with, then move on to the simple broken plastic and rotten rubber parts.
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Solve your misfires, lean codes, rough idle - http://forum.e46fanatics.com/showthread.php?t=897616

Fuel pump failures - http://forum.e46fanatics.com/showthread.php?t=929501

Temp Info - http://forum.e46fanatics.com/showthread.php?t=964491

Hidden OBC Menu - Check Voltage, Temps, Fuel Level - http://forum.e46fanatics.com/showthread.php?t=239619

E46/E39 GM5 Door Lock Info - www.bmwgm5.com

Lower hose fan switch O-ring - BMW #13621743299
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