|
|
|
|
|
|
BMW Garage | BMW Meets | Register | Today's Posts | Search |
|
BMW 3-Series (E90 E92) Forum
>
Trouble loosening the old spark plugs
|
|
09-02-2012, 11:52 AM | #1 |
Lieutenant
28
Rep 488
Posts
Drives: 2008 335xi E90
Join Date: Jul 2010
Location: Somewhere in America
|
Trouble loosening the old spark plugs
I have a 2008 335xi AT, 30000 miles, Running Cobb Accessport Stage 1+ with FMIC and DCI.*I followed Cobb's instructions to change the spark plugs and stopped when I could not remove spark plug #1. I applied about doubled the amount of torque (45 nM) for loosening than is required for tightening (23 nM) and then stopped in fear of breaking the spark plug. Suggestions?
|
09-02-2012, 02:56 PM | #2 |
Major
47
Rep 1,160
Posts |
get a longer ratchet, more leverage should do the trick.
__________________
Monaco Blue 330xi - Terra Interior/6-MT/Sport/Premium/Cold/CSL's/M3 Spoiler Lip/Black Kidney's
|
Appreciate
0
|
09-02-2012, 07:58 PM | #3 |
Lieutenant
28
Rep 488
Posts
Drives: 2008 335xi E90
Join Date: Jul 2010
Location: Somewhere in America
|
Well obviously...but my concern is that I'll strip the spark plug threads or worse, break the spark plug. I tried with the engine cold, which is recommended. Any tricks here? Would a warm engine be better?
|
Appreciate
0
|
09-03-2012, 03:12 AM | #5 |
General
17473
Rep 18,821
Posts |
So first off, you need to use a special socket. Second, by quoting the amount of torque, are you using a torque wrench to remove the plugs? You should never use a TW for loosening anything, it damages the wrench. The breakaway torque is always higher to remove a plug or any fastener.
|
Appreciate
0
|
09-03-2012, 11:08 PM | #6 | |
Lieutenant
28
Rep 488
Posts
Drives: 2008 335xi E90
Join Date: Jul 2010
Location: Somewhere in America
|
Quote:
Torque wrench - only to check how much torque I was putting on the stuck plug...after trying to remove it with the socket wrench, extension, and special BMW socket. The penetrating oil should work from multiple sources. Thanks, |
|
Appreciate
0
|
09-04-2012, 11:45 AM | #7 |
Major
60
Rep 1,073
Posts |
Your not going to strip or break the plug it if your going in the right direction and the socket is fully seated on the plug...on the other hand if it was cross threaded put in, then the damage is already done....
|
Appreciate
0
|
09-04-2012, 09:00 PM | #8 | |
General
17473
Rep 18,821
Posts |
Quote:
For example, I have removed O2 sensors that required a 3 foot extension on my 28 inch breaker bar, and the O2 sensor remained in tact. |
|
Appreciate
0
|
09-08-2012, 03:25 PM | #9 |
Autobot
5
Rep 454
Posts
Drives: E90 325i Auto~NO~Go
Join Date: Apr 2012
Location: East Bay
|
Try the following trick that I've learned. Torque it back in, then torque it back out, keep doing this so that you don't accidentally strip anything. You're basically trying to loosen it slowly and surely.
|
Appreciate
0
|
09-08-2012, 04:48 PM | #11 |
Captain
146
Rep 942
Posts |
^ PB Laster works even better. The factory always overtightens plugs. On all cars. It's going to take some umpf to break them lose. As long as you have the proper socket/tool on it and you are square, put some torque on it. Make sure to use anti-sieze on the threads of the new ones. I also use di-electric grease on the plug boots.
__________________
'07 335i Sedan, base pkg, 6spd Manual, Procede 3 V5 w/NLS, Macht Schnell Downpipes, 18" Staggered 313's w/Conti DWS's, OS Giken TCD LSD, VAC Street Diff Cover, Dinan Oil Cooler, Dinan Intercooler, Akebono Euro Pads, CDV Removed, Black BMW Grilles, Interior & Exterior white LED lighting, LUX Angel Eyes, Debadged, Blend V1 mount, Llumar ATR Tint.
|
Appreciate
0
|
Bookmarks |
|
|