Plug Wire Order-87 Ht4100
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HT4100 4.1, 4.5, 4.9 Discussion, Plug Wire Order-87 Ht4100 in Cadillac Engine Discussion; I Have A Simple Problem. While Changing The Plug Wires On My 87 Sedan Deville I Enlisted The Help Of ...
  1. #1
    CADDYLUVA is offline Cadillac Owners Member
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    UnhappyPlug Wire Order-87 Ht4100

    I Have A Simple Problem. While Changing The Plug Wires On My 87 Sedan Deville I Enlisted The Help Of My Brother Who Proceeded To Pull All The Wires At One Time. I Placed The Wires Back On In The 1,8,4,3,6,5,7,2 Order But The Car Still Acts Like The Wires Are Out Of Order And Will Not Start. My Question Is, Does The #1 Placement Matter. Mine Is On The Right Rear When Facing The Engine From The Passenger Side Front Wheel. Any Help Would Be Appreciated Greatly As I Can't Move The Car Till I Get This Straight.


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    awadecki is offline Cadillac Owners Enthusiast
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    Re: Plug Wire Order-87 Ht4100

    I'm very confused by your question, but the No. 1 cylinder on the 4.1's is the cylinder closest to the passenger-side tire, and it also faces the radiator.

    In other words, if you're facing the engine having just opened the hood, #1 should be to YOUR left (towards the passenger-side tire) on the bank of cylinders facing the radiator.

  4. #3
    CADDYLUVA is offline Cadillac Owners Member
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    Re: Plug Wire Order-87 Ht4100

    You Are Talking About The Actual Cylinder. I Am Talking About The Placement Of The Wire For #1 On The Cap. All The Wires Are In Order And #1 Is Correct On The Cylinder Head But The Car Acts As Though The Wires Are Out Of Order When I Try To Start The Car.

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  6. #4
    awadecki is offline Cadillac Owners Enthusiast
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    Re: Plug Wire Order-87 Ht4100

    OK, if you still have the OEM coil cap cover on your dist. cap, I believe No. 1 is by the "H" in the embossed word "LATCH". It's opposite the dist. cap doghouse.

  7. #5
    CADDYLUVA is offline Cadillac Owners Member
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    Re: Plug Wire Order-87 Ht4100

    hey thanx. that was the trick

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