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Changing spark plugs
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10-16-2011, 09:32 PM | #1 |
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Changing spark plugs
Hey, so I just got my 2007 335i and it has about 50k on it, and looking through the service records I don't think its had its spark plugs changed yet (or at least for a while). I called a local shop here to find out how much it typically runs to install new ones and I got an outrageous price for the plugs + install...It's to the point where I was thinking they might have misheard me and was quoting me for something else...Anyways, I know changing spark plugs isn't exactly a difficult task (especially with the help of the DIY section on here) but I just wanted to make sure that there's nothing I need to be concerned about while changing them.
Is it just a typical spark plug install? Or do I need to do anything else, such as having BMW code the car or something. Also...any recommendations on plugs? I found some Bosch OE replacement plugs for $15/plug which seem pretty good. Any help is appreciated. |
10-16-2011, 09:34 PM | #2 |
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Use ONLY OEM ..You can buy them for $65 here
http://www.autohausaz.com/search/pro..._term=ZGR6STE2 My indy shop charged me $40 to install.. |
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10-17-2011, 12:16 AM | #4 | |
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Quote:
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10-17-2011, 12:46 AM | #5 |
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Local mechanic in my neighborhood..VS Motors..but I do have a long standing relationship w/ them..so I know they cut me a break..honestly there is nothing too complicated at all about changing plugs..
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10-17-2011, 07:52 AM | #6 |
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A few members have reported that Sears carries the tool needed to change plugs; I bought one from a vendor and will tell you that it is pretty handy to have. A plug change will take at most, 30 minutes, if you're taking your time. The thing to remember is that when removing the coils, take your time and use a screwdriver or something like it to place in the slot and apply smooth, even pressure while pulling. If you buy your own plugs, and don't feel like doing it yourself, any shop could do it for you.
I like doing it myself because I like inspecting my vacuum lines, etc, whenever I have the engine cover off. It never hurts to inspect connections. |
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10-17-2011, 08:03 AM | #7 |
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there's also a DIY here about changing spark plugs, do a little search and you will find it.
Easy to be done, worth paying $$$$$ for labor.
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11-01-2011, 04:08 PM | #8 |
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Be wary of the Schwaben socket that Sears is selling. For the diaster it caused me, read my thread here: http://www.e90post.com/forums/showthread.php?t=600473
Now i could have been unlucky that i got the faulty 1 of the 1million piece but still better safe than sorry. Secondly, I have no evidence but FWIW, I recommend buying the BMW Plugs (again read my thread - misfire and idling issues with Bosch OEM replacement). Again I could be wrong, but most ppl who seem to be having idling issues used the bosch oem's. Good luck and please post back your results. I would like to know if you run into misfire/rough idle issues after the DIY. |
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11-01-2011, 04:59 PM | #9 |
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Id like to know 2!!! mine has 63000 miles, runs fine, and I know the electrode gets some erosion and a wider gap but a lot of guys do have issues after changing which maybe related to the above mentioned which I believe the pcm has to "learn" new plugs for they adapted to the old ones.
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11-01-2011, 07:09 PM | #10 |
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I just replaced mine this weekend with the Bosch OE replacements off ebay ($60). Used the sears socket. Removed the magnet. All went smooth. Takes under an hour, including the removal of the micro filter/cowl/cover and what not.
No issues at all. Now seems smoother with Cobb. At first start up, it seemed to be learning the new plugs. I let it run/idle for a few minutes and all is good. I was 58k on an 07 335i. My old plugs didn't look too bad though. |
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11-01-2011, 07:12 PM | #11 |
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Like I tell everyone, you don't have to only use the OEM one. If you have a grinder you can buy a 14mm deep set socket from sears and shave it down a little bit, works great. you need a magnet too to get them out.
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11-01-2011, 07:18 PM | #12 |
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I bought the spark plug tool from turner motorsport, no other issues and pretty straight forward. Make sure to use a torque wrench. I believe the spark plug box has the torque spec.
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11-07-2011, 11:22 AM | #14 |
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I use a standard deep socket to unscrew them & a hemostat to lift them out. A piece of fuel tubing on the end of the new one to get it started & a deep socket/torque wrench to cinch them down
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11-07-2011, 02:17 PM | #15 |
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Did you use BOSCH OEM's or BMW plugs? After plug change, did you have rough idle issues i.e. engine will sputter/shake time to time and raise idle from 650 to 800rpm when warm?
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