306 Spark Plug Advice
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  1. #1
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    306 Spark Plug Advice

    Any spark plug experts out there? I'm totally confused about which Eyquem plugs to use for my 1997 306 1.8L 8v (XU7JP).
    I bought some plugs from Dapco and was given RFC42LZ2E. When I got home, I checked the service record book and Peugeot listed RFC52LS. I looked on the Eyquem website <a href="http://www.sagem-online.com" target="_blank">eyquem</a> and they list RFN52LZ. I then called a Peugeot dealer and was told that the 2L 16v, 1.8L 16v & 1.8L 8v all use the same plug - RFN58LZ.
    Can anyone help me out?

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  2. #2
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    Arthur,

    Those numbers in the different sparkplugs are the heat ranges.

    My suggestion is don't both with eyquem. Get Beru multi electrode plugs - they are multi-heat range as well which solves the problem. They are also a French plug.

    Get the Beru Ultra-X UXF79 plugs from Auto France (9439 8145) in Artarmon. You can also buy them at Colliers (Granville).

    Every Pug mechanic I've ever spoken to has recommended them, and I can't fault them. They're about $15 each, but you drive until the engine begins to miss. I hear to expect 100 000km...

    Derek.

  3. #3
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    DeKa:
    My suggestion is don't both with eyquem. Get Beru multi electrode plugs - they are multi-heat range as well which solves the problem. They are also a French plug.
    Nein, Beru is a Deutsch firm
    Unless the plugs are made in France.

    How do the Eyquem plugs compare to Bosch; both are listed in the service manual for my 1.6. Whilst the car is under warranty, the dealer puts in whatever Peugeot specifies. All I know is after the last service with the new plugs, the fuel consumption dropped a little. Granted there was fresh oil in the engine too.

    Peugeot 307 XS 1.6
    Aussiefrogged in MEL, PER, SYD, BNE & ADL.
    Rendezvous Adelaide 2005

  4. #4
    Fellow Frogger! WRCPUG's Avatar
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    Can you guys recommend a good high performance plug for a GTi6?

    I know NGK Igidium are good for Jap Turbo and ive got them in my GTO but will they fit in a 306?
    PEUGEOT 306 GTi6 (1997-1999 HYBRID)
    105.4kw (141HP) ATW
    2:09 Phillip Island (Toyo Street Tyres)

    2001 YAMAHA YZF-R6
    119HP

    1993 MITSUBISHI 3000GT Twin Turbo
    300BHP
    STOCK-14.006 @97.4mph HEATHCOTE
    STOCK-1:15 CALDER Long Circuit (Stock Street Tyres + Stock Pads :banghead )
    (For Sale)

  5. #5
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    Pug307:
    [QBNein, Beru is a Deutsch firm )
    Unless the plugs are made in France.
    [/QB]
    PUG307,

    I've got one of the boxes sitting right here on my desk - which is why I can always chime in with the model number wink They are indeed made in France.

    Derek

  6. #6
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    resurrecting an old thread - have a 306 Rallye 2.0 16V 97kW - plugs last changed 2009 !!
    can anybody recommend best spark plugs?

  7. #7
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    Which motor code number is that? My French manual for the 306 lists--
    Moteur XU10J4
    BOUGIES
    Bosch ............FR8LDC
    Eyquem ...........RFC42LS2E

    Moteur XU10J4R
    Bosch ............FR6LDC
    Eyquem ...........RFC58LZ2E


    Écartement des électrodes (mm) 0,9

  8. #8
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    2.0 petrol 132bhp /97kW 16V XU10J4R

  9. #9
    Fellow Frogger! Bluey's Avatar
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    FR8LDC is the correct heat range for the J4R. FR6 would be too cold for a standard GTI6.

    J4R
    Bosch FR8LDC or LDC+
    NGK BKR5EK

    J4RS
    Bosch FR7LDC or LDC+
    NGK BKR6EK

    Can't comment on Eyquem

  10. #10
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    Quote Originally Posted by Bluey View Post
    FR8LDC is the correct heat range for the J4R. FR6 would be too cold for a standard GTI6.

    J4R
    Bosch FR8LDC or LDC+
    NGK BKR5EK
    NGK part finder tells me BKR6E.

    Also, Bosch FR8LDC is different to the FR6LDC stated in the post above.

    I'm confused....

  11. #11
    Fellow Frogger! Bluey's Avatar
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    BKR6E is single prong. EK is dual prong. 6E or 6EK work fine in J4R as do the corresponding 7LDC but the warmer plugs recommended above work better on cold starts. The info I have from Boyce's Manual states what I've written in the previous post.

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