Spark plugs

[CBarry001]

Where are the spark plugs located on a ‘93 850ci and how is the best way to get at them

[rosakirk12]

Where are the spark plugs located on a ‘93 850ci and how is the best way to get at them

Oh boy! Try the DIY. Good luck.


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[PabloRock]

You can't miss the plugs (there are a ton of them). But when you remove them, make sure you grab the boots by the "boot" and not the wire (the wires are $$$ to replace). Use NGK BKR6EK and not the OEM recommended Bosch plugs (the specs are different now). Almost all of them are right there, so most plug tools will do the job fairly easily (even the one in the tool kit, but I prefer a socket wrench). For plug 12 (the one in the back by the driver) is a little hard to get to. But if you use the plug tool in the tool kit, it's fairly easy to get out (you just end up scratching your hand a bit reaching in there).

Also noticed another post you had about a rough rich idle. My main problem for that was an intake manifold leak (the correct plug helped too). You probably don't need new gaskets, just for them to be sealed (it was all I did). The gaskets are expensive, and from what I read don't really go bad too often. Although intimidating, It's not a particularly hard job nor expensive, but does take awhile (you need to remove a lot of stuff). But if you are asking where the plugs are, that job my be best saved until you have more experience (I'm no mechanic, but mechanically inclined. Have yet to run into an issue that I couldn't fix with help from this board).

Good luck.

[TxGR8White]

There is exactly one per cylinder, and they are located on the end of each sparkplug wire. If you still cannot find them, you might want to take it to a certified mechanic to avoid damaging anything...