My 88 Mondial is a blunder of problems. Recently I changed the alternator and the car say for couple | FerrariChat
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My 88 Mondial is a blunder of problems. Recently I changed the alternator and the car say for couple

Discussion in 'Technical Q&A' started by SanDiegojohnnysurf, Dec 19, 2023.

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  1. SanDiegojohnnysurf

    SanDiegojohnnysurf Rookie

    Dec 19, 2023
    1
    San Diego
    Full Name:
    Johnny
    #1 SanDiegojohnnysurf, Dec 19, 2023
    The car runs around the block perfect then the the spark plugs foul. It sat for a couple months. All I did was change the alternator. Has a new fuel filter and fuel pump. ( 6 months old) Please help I have checked all connections and took off one bank and the car starts. Then took the opposite bank and she runs. The car was sitting for years before I got her and ran awesome before this.
     
  2. yelcab

    yelcab F1 World Champ
    Consultant

    Nov 29, 2001
    13,671
    San Carlos, CA
    Full Name:
    Mitchell Le
    #2 yelcab, Dec 20, 2023
    Hello Johnny, I think you need to have a better description of the problem and what you have done before we (at least I) can make heads or tails of what is going on.
     
    PAP 348 and Steve Magnusson like this.
  3. PAP 348

    PAP 348 Ten Time F1 World Champ
    Lifetime Rossa Owner

    Dec 10, 2005
    100,232
    Mount Isa, Australia
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    Pap
    #3 PAP 348, Dec 20, 2023
    I have no idea what he is talking about either lol. :D
     
  4. tbakowsky

    tbakowsky Two Time F1 World Champ
    Consultant Professional Ferrari Technician

    Sep 18, 2002
    20,038
    The Cold North
    Full Name:
    Tom
    #4 tbakowsky, Dec 20, 2023
    Sounds like he has a vacuum leak..
     
  5. raemin

    raemin Formula 3

    Jan 16, 2007
    2,388
    Lyon (FR)
    Full Name:
    R. Emin
    #5 raemin, Dec 22, 2023
    Fouled spark plug looks like he is babying the car too much or needs to use hotter plugs than the factory recommended ones.
     
  6. moysiuan

    moysiuan F1 Rookie
    Silver Subscribed

    Nov 1, 2005
    4,253
    Canada
    #6 moysiuan, Dec 23, 2023
    Have you checked more than one plug? All plugs fouling is different than one. Both banks fouling or one bank? Check a plug on each bank, that will help direct further diagnosis. One bank ok? Perhaps a coil problem. All plugs fouling points to fueling issues, vacuum leaks, maybe O2 sensor if this particular model has the sensor.

    The 1988 has very well developed fuel injection for emissions, and should run without fouling plugs no matter how the car is driven.

    There is not enough info to diagnose this situation. Does it start ok? Idle ok? Revs drop too low when lifting off throttle? Etc. Also need to know if it a US or Euro (or Swiss) spec.
     

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