Question about 1999 BMW 318 ti

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Spark plug wires

What's the correct sparkplug wires set-up for my 1999 318ti?  I remember when I pulled the old ones out, it's simply 1234 from coilpack and 1234 to the cylinder (the plastic plug wire guide will limit your choices, base on the length of the wires)  Someone mentioned a firing order of 1342 which looking at the top of cylinders (plugs off) is pretty much correct(the outside two cylinders are at the same height and two middle ones are same).  Is the coil pack is taking care of the complicated sequence by simply following 1234 or the length of the wires?  Thank you

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  • BigSarge2 Oct 17, 2008

    Thanks for the help.  I'm currently on the road but i will see my car later today.  I will follow the order as you mentioned, I hope I don't run to having short wires as the coil pack is arranged as 1234 or vice versa..   Thanks for the help.

  • BigSarge2 Oct 18, 2008

    Correction on the firing order.  I followed the 1342 firing order, but it didn't even start.  I put it back to 1234 from coil and 1234 to spark plug and it run like a champ.  I figured electronic ignition takes care of the firing order.  Yes it is still 1432 but is all taken care off by the computer or something.  Plus the wires comes with railing to where it leaves you no choice but one way.  This is for a 1999 318ti.  Thanks for the help



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The firing order is 1-3-4-2 and that is how it should be wired.. only then can the engine work correctly.
The front of car is no 1 cylnderand nearst to dashboard is no 4 cylinderand 2 and 3 in the middle.

Posted on Oct 16, 2008


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