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Anonymous Posted on Nov 16, 2010

How to change the spark plugs on peugeot 406 v6 3l coupe is this straight forward like a 4 cylinder car

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  • Master 1,874 Answers
  • Posted on Nov 16, 2010
Anonymous
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Joined: Nov 14, 2008
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1. Spark plugs removal

1.1. Front cylinder bank spark plugs removal:
1.1.1. Disconnect the battery from car terminals.
1.1.2. Remove the engine plastic cover.
1.1.3. Disconnect the ignition coils electrical supply cable and all three coils connectors.
1.1.4. Remove all three ignition coils screws.
1.1.5. Remove all three ignition coils out from cylinder head.
1.1.6. Remove all three spark plugs out from cylinder head (straight forward).

1.2. Back cylinder head bank spark plugs removal:
1.2.1. Remove the inlet manifold out from cylinder head.
1.2.2. Disconnect all three ignition coils connectors.
1.2.3. Remove all three ignition coils screws.
1.2.4. Remove all three ignition coils out from cylinder head.
1.2.5. Remove all three spark plugs out from cylinder head (straight forward).

2. Spark plugs installation

2.1. Refit all in reverse order.
2.2. Spark plugs tightening torque = 2,8 +/- 0,3 daN.m
2.3. Ignition coils tightening torque = 0,8 +/- 0,2 daN.m

Testimonial: "cheers"

  • cool307 May 10, 2011

    Hi,

    I just had a look at your tips for replacing the ignition coils on a Peugeot 406 and was looking to do the same for my 407.

    One question though. Did you remove the manifold completely, cause on mine I'm having problems removing the back screws?

    Regards,

    James

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