1. Some members were not receiving emails sent from XJbikes.com. For example: "Forgot your password?" function to reset your password would not send email to some members. I believe this has been resolved now. Please use "Contact Us" form (see page footer link) if you still have email issues. SnoSheriff

    Hello Guest. You have limited privileges and you can't "SEARCH" the forums. Please "Log In" or "Sign Up" for additional functionality. Click HERE to proceed.

Mechanic recommends different plugs than spec

Discussion in 'XJ Technical Chat' started by tsxjrider, Jun 10, 2008.

  1. tsxjrider

    tsxjrider New Member

    Messages:
    11
    Likes Received:
    0
    Trophy Points:
    1
    Local independent shop recommended I run NGK BP7ES plugs in my 1985 XJ 700 Maxim. Manual recommends NGK BP8ES. Yes - No? Good - bad?
     
    tsxjrider, Jun 10, 2008
    #1
  2. bluepotpie

    bluepotpie Member

    Messages:
    416
    Likes Received:
    0
    Trophy Points:
    16
    Location:
    Londonderry, NH
    not sure but i know my 82 XJ750 Maxim runs BP7ES. I'm pretty sure that's recommended in mine.
     
    bluepotpie, Jun 10, 2008
    #2
  3. Jim_Vess

    Jim_Vess Member

    Messages:
    244
    Likes Received:
    1
    Trophy Points:
    16
    Location:
    Lafayette, CO
    I'd go with what the manual recommends. Maybe the mechanic is getting the 750 and 700 mixed up.

    The BP7ES is a hotter plug than the BP8ES.
     
    Jim_Vess, Jun 10, 2008
    #3
  4. tsxjrider

    tsxjrider New Member

    Messages:
    11
    Likes Received:
    0
    Trophy Points:
    1
    What would be the benefit of a hotter plug?
     
    tsxjrider, Jun 10, 2008
    #4
  5. Jim_Vess

    Jim_Vess Member

    Messages:
    244
    Likes Received:
    1
    Trophy Points:
    16
    Location:
    Lafayette, CO
    On a stock engine - no benefit.
     
    Jim_Vess, Jun 10, 2008
    #5
  6. MiCarl

    MiCarl Active Member

    Messages:
    4,373
    Likes Received:
    23
    Trophy Points:
    38
    Location:
    Livonia, MI (Metro Detroit)
    If you're a mechanic out of BP8ES a hotter plug means a sale!
     
    MiCarl, Jun 10, 2008
    #6
  7. redfire

    redfire Member

    Messages:
    104
    Likes Received:
    0
    Trophy Points:
    16
    Location:
    Arkadelphia, Arkansas
    hotter plug stays clean longer if the plugs are fouling out often. if it's not fouling plugs, I'd go with the recommended range
     
    redfire, Jun 10, 2008
    #7
  8. Jim_Vess

    Jim_Vess Member

    Messages:
    244
    Likes Received:
    1
    Trophy Points:
    16
    Location:
    Lafayette, CO
    If the plugs are fouling out often, the mixture needs to be adjusted. Hotter plugs would just be a band-aid.
     
    Jim_Vess, Jun 10, 2008
    #8
  9. Jim_Vess

    Jim_Vess Member

    Messages:
    244
    Likes Received:
    1
    Trophy Points:
    16
    Location:
    Lafayette, CO
    You gotta love capitalism. :lol:
     
    Jim_Vess, Jun 10, 2008
    #9

Share This Page