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Discussion Starter · #1 ·
Just got my service light on and its my 2nd and 5th coil packs and plugs.

in order to not have to constantly having problems i am going to go ahead and replace them. parts from bmw are about 700..bmw wants 1700 for parts and labor which is pretty ridiculous..how hard are these to replace? im a pretty mechanically inclined person but wanted to see if there will be any resetting needed? if i shouldn't chance it and just have the dealer handle it? i dont want any problems down the road but curious if anyones done it before? Thanks!
 

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Changing them takes about an hour, its a matter of yanking out (literally) the coil to expose the plug and then that another 9 times or however many ur changing. The only resetting is via the cluster and a matter of pressing n holding the odometer to reset the plug mileage. (takes 30 seconds)
 

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Discussion Starter · #3 ·
what if the coil pack going out caused a service engine light and everything? once its fixed will it automatically turn off the light?
 

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what if the coil pack going out caused a service engine light and everything? once its fixed will it automatically turn off the light?
Go to a local autozone and theyll scan to double check and clear them for free. The light most likely won't extinguish by itself, it may after an hour or so of driving. No guarentees:tonquesmilie:
 

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HI There,

I have just change out all the plug and coil on the pass weekend, and the total time for me to do the job is about 4 to 5 hr from start to finish. I know they are people out there can do it faster but I can tell you there is no way you can do it in a 1hr. You need to take off both intake air box to make more room to work and both cabin filter housing & plastic cover need to come off to get to the back two screw of the strut tower brace, then take the front two screw off and remove the strut tower brace of completely. After that you can get to the water reservoir tank on the driver side. To remove the reservoir tank, there is two screws holding the tank and one connector with 2 wire that need to be disconnect, but leave all the water connection untouched and then flip the whole water tank toward the front driver side head light to have enough room to work on the coil and plug. To remove the plug & coil, you need to take the plastic plug & coil covers off first by carefully pulling up from both end then the plastic cover will come off from the valve cover (Note: The plastic cover is hold in by two rubber o ring). Once the cover is off you can see 5 coils on each bank. To remove the coil, you need to flip the top locking cover up from the tip of the coil then remove the coil connector and after that you can pull the coil off and remove the spark plug. The last two plugs and coil is the hardest, there is not a lot of room to work with and it going to take some time to get them off. After all 10 cylinders are done then you can put everything back in the reverse order.

As for the plug, it’s going to cost you about $35 to $40 each from BMW and you need to torque them down @ 23 Nm.

The coil I use on my M5 is the Okada/Plasma Direct coil. It has 4 times more spark energy than stock coils and also generates an ultra fast multi spark discharge of 10 sparks up to highest RPM.
The spark amperage is increased 100%, allowing the spark to reach many more molecules and therefore accelerate the ignition and combustion process, and the unit is plug and play no cutting of wire or anything and it cost about $2,300 to $2,700 depends on where you get them.

Hope this information help on your problem and I’ll try to post some photo and result on the OKD coil and new plug install.
 

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Coils/plugs on teh car are easy

I had some tough times removing some of the coils until i made a tool out of some 1x1 square tubing..

i used this as a leverage point and put a prybar through it to simply lift the coil off the plug... some of those suckers were ON THERE...
 

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I know they are people out there can do it faster but I can tell you there is no way you can do it in a 1hr.
How many people did you have working on it? And what tools were you using? We have just about everything lol.
 

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I was the only one working on the car that day and I use the same hand tool that you can find in any car shop. I know 4-5Hr sound long, but taking out those coil without proper tool is a pain in the A** and the back two are just don’t have a lot of room to work with.
If next time I’m going to work on it again I’ll try to make some kind of tool to make it easier to take out the coil. <?xml:namespace prefix = o ns = "urn:schemas-microsoft-com<img src=" /><o:p></o:p>
 

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I was the only one working on the car that day and I use the same hand tool that you can find in any car shop. I know 4-5Hr sound long, but taking out those coil without proper tool is a pain in the A** and the back two are just don’t have a lot of room to work with.<o:p></o:p>
I just changed my plugs. The connector on one of the rear coils (#10) snapped off, not just the black lever the entire white connector. The lifting force might not have been perfectly vertical ouich

If next time I’m going to work on it again I’ll try to make some kind of tool to make it easier to take out the coil.
Good idea :M5thumbs:
I should not need to make the tool for a couple years :3:
 

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Just got my service light on and its my 2nd and 5th coil packs and plugs.

in order to not have to constantly having problems i am going to go ahead and replace them. parts from bmw are about 700..bmw wants 1700 for parts and labor which is pretty ridiculous..how hard are these to replace? im a pretty mechanically inclined person but wanted to see if there will be any resetting needed? if i shouldn't chance it and just have the dealer handle it? i dont want any problems down the road but curious if anyones done it before? Thanks!
NGK LKR8AP spark plugs are $11 from Amazon.com
Coils are $53 from getbwmparts.com

$700 is common overpriced dealer markup. Double (or even 4 times) list price is not unusual.
$1000 is overpriced dealer labor ouich

Only you can judge your abilities, but his job does not require special equipment.
 

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Thanks for the links. I had searched for a tool (even visited the ESS site), but did not find one made for our application.
I can see how the Schwaben tool could help, although their website only lists VAG applications.

"Use of improper tools to remove these "push down" coil packs can result in damage of the coil pack itself."
Been There, Done That :nono:
E90 coils sometimes break near the plug, and our coils have a similar design.
 

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It'll fit into the punched out circles on the coil cap :applause:
 

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I'm bringing this thread back to life, but curious about what everyone's mileage was when plugs/coil packs were changed? Any signs such as misfiring or timing that either of these needed to be changed or were they just done as preventive maintenance? I'm at 60K and I just changed my plugs out, but am considering doing the coil packs next. Service manual says 80K. Does that sound about right?
 

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Have mine in right now for the 37,000 mile scheduled spark plug replace (covered under OEM!), and just got a call that they broke two coils during the procedure (brittle) and they are on back order until Friday. Not stressing over it. Not my daily driver anyway.
 

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Doing plugs on this car was an absolute nightmare! The coil packs would NOT come off no matter how hard I pulled and twisted. I got 8 of them off, then had to use channel locks and destroy #10 to get it out. I tried the extended socket/flathead screwdriver technique on cylinder #5 and that worked thank god! Thanks to the previous owner, who was a hackjob, cylinder #3 coil pack was already half broken and he reinstalled it so I had to replace 2 coilpacks, not cool. I can't believe even someone with an M5 would put half broken parts back on their car. The only advice I have is make sure you twist and pull evenly on the pivot point of the coilpack connector and if that doesnt work use the extended socket/flathead method.
 

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Def more than an hour unless the coil packs were pre-lubed and come of easy.. I have done it twice and I consider myself mechanically inclined. Honestly in my case the pain was getting the damn cover off!
 
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