peugeot 505 1.8 spark plugs
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  1. #1
    Fellow Frogger!
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    Default peugeot 505 1.8 spark plugs

    hello

    i replaced today the spark plugs to NGK BP6RES and set the gap to 0.6 according to NGK's site.

    now the idle is not smooth and there are bangs from the exhaust.

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    maybe the gap is incorrect? it has an electronic ignition.

    thx

  2. #2
    1000+ Posts Beano's Avatar
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    Normally they take BP6ES, I think.

    BPR6ES is with internal resistance. Any reason for that ? I hope you know, because I don't !

  3. #3
    1000+ Posts Wildebeest's Avatar
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    2pac,
    Why BPR6ES ? BP6ES has been the usual spec.
    Maybe your system has too much resistance ie plug leads. Plug extensions ?
    Quickly sorted, refit the old plugs.

  4. #4
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    the seller told me the resistor is better for electronic ignition.

    the ngk site recommends also BP6REIX.

    anyway, the electrode gap of 0.6 is ok?

    and what other plugs are good?

    thx

  5. #5
    1000+ Posts Wildebeest's Avatar
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    2pac.
    The seller guy may have got confused with the recommendation for the Douvrin engine. I think these have a tapered seat and are fitted with an 5/8" socket ?

    0.6mm is approx .024" [the thickness of a hacksaw blade].
    Champion N9YC are ok.

    PS. Anything wrong with trying the old plugs as prev. suggested?

  6. #6
    Fellow Frogger! Uffee's Avatar
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    Quote Originally Posted by 2pac View Post
    the seller told me the resistor is better for electronic ignition.
    I believe resistor spark plugs are for engines with ECUs.
    504 GL Coupe '73 Silver
    504 GTDT Pickup Mini-Motorhome '83 Coral Red
    407 HDi Sedan '05

  7. #7
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    Quote Originally Posted by Wildebeest View Post
    2pac.
    The seller guy may have got confused with the recommendation for the Douvrin engine. I think these have a tapered seat and are fitted with an 5/8" socket ?

    0.6mm is approx .024" [the thickness of a hacksaw blade].
    Champion N9YC are ok.

    PS. Anything wrong with trying the old plugs as prev. suggested?


    nope, they have the regular socket and a flat seat with a washer.

    what do you mean by the old plugs? they were bosch W 7 DU i think but i threw them away and i need new ones

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