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follow up on volvo plugs questions and replies.. 850 1995

posted by  someone claiming to be john on  Fri May 21 04:19 CST 2004 [RELATED]

i got a good idea on the options for the plugs ..can anyone tell me what are the symptoms of a bad plug or misfiring. since i have replaced the plugs with bosch copper..my mileage has gone down..starting is still not a problem..engine is not shaking..but the exhaust system is bubbly and acceleration is down on low rpm....after car heats up..

i think with the gas prices this high for premium..it might be cheaper to use the best plugs for mileage.







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    follow up on volvo plugs questions and replies.. 850 1995

    posted by  someone claiming to be Ray N on  Sat May 22 13:26 CST 2004 [RELATED]

    I use the OEM plugs in my turbo. I see 25.4 mpg over 20K miles
    (80%-90% freeway driving). Never had any issues with them.
    I saw about 20mpg when my commute was 50% freeway.

    What milage are you getting?

    Everyone, don't forget to inflate your tires properly for best
    milage. That could also help make up for the $2.50/gallon for
    premium we are now paying.








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    follow up on volvo plugs questions and replies.. 850 1995

    posted by  someone claiming to be jeffery47 on  Fri May 21 09:25 CST 2004 [RELATED]

    I use the volvo oem 3-prong plugs that don't require gapping and they work very well.








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    follow up on volvo plugs questions and replies.. 850 1995

    posted by  Lilitchpin on  Fri May 21 06:51 CST 2004
    Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
    last visit: Fri Oct 24 05:03 CST 2014
    [RELATED]

    I've learned that the 850s are very sensitive to their plugs. You didn't mention what model plugs you got, but I can tell by MPG & preformance when my plugs need replacement - usually about 25k miles for me. I use Bosch #FR7DC from eeuroparts.com with my non-turbos. To me about the same as OEM Volvo plugs.

    Other simple things to check - that wires seated firmly on plugs and distributor, gap to spec (I think about.28) and perhaps wires might be going bad (on a '95 I would change based on age alone)

    Also distributor & rotor should be replaced regularly. I usually do mine with plugs.

    Good luck!








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      follow up on volvo plugs questions and replies.. 850 1995

      posted by  someone claiming to be john on  Fri May 21 07:04 CST 2004 [RELATED]

      i used the same plug as your mentioned bosch fr7dc. Now I am thinking that might not have been the right plug for a turbo. At the same time I replaced the plugs i replaced the wires, cap and rotor and filters..fuel and air..so thats why i am concentrating on only the plugs..and exhaust..







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        follow up on volvo plugs questions and replies.. 850 1995

        posted by  jda2000 on  Fri May 21 07:17 CST 2004
        Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
        last visit: Sun Jan 1 21:27 CST 2012
        [RELATED]

        I use the same plug Bosch FR7DC in my volvo turbo without problems.
        --
        '88 240, '92 745, '98 v70 John, Tampa Bay







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