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General E46 Forum
This is the place to get answers, opinions and everything you need related to your E46 (sedan, coupe, convertible and wagon) BMW!

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Old 07-24-2013, 05:29 PM   #21
jfoj
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Join Date: Nov 2009
Location: Fairfax, VA USA
Posts: 10,454
My Ride: '06 330CiC, '03 M5
Quote:
Originally Posted by dznuts007 View Post
I tried that method of using brake cleaner or throttle body cleaner fluid to try to find leaks, but it totally didn't work for me...and I had a bunch of torn boots, bad ccv, etc
dznuts007 wins the prize on this one. The best way to confirm hose problems and vacuum leaks is to know where to look for them, use your hands, fingers and eyes. After that smoke testing is the next best thing to use. Make sure you also smoke test the crankcase as well as the intake path.

Spray is usually only good for vacuum leaks on the top side of the engine or connection. Most of the E46 vacuum leaks are low in the engine or on the bottom side of the hose! Not saying spray will never work, it just does not do an effective job on the E46 and other model BMW's that run the same engines.
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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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