Ferrari 348 tb: at start works on 4/6; hot at 8. Why? | FerrariChat
Buy

Ferrari 348 tb: at start works on 4/6; hot at 8. Why?

Discussion in 'Technical Q&A' started by Mistico, Sep 5, 2018.

This site may earn a commission from merchant affiliate links, including eBay, Amazon, Skimlinks, and others.

  1. Mistico

    Mistico Rookie

    Oct 14, 2012
    18
    #1 Mistico, Sep 5, 2018
    I am days short to buy a 1991 F 348 tb; when off and cold and switching on engine goes at 4 cylinder (one side only?) or 6. When it's hot, beautiful 8.

    The owner told me that usually he changes 1 spark and everything is fine.....for 2 months; than the story starts again.

    Anyone had the same? Could it be on side of the engine with the electronics not working?
    Could it be one head piston? Or injectors?

    Any help welcome!

    Next week, anyway, it will go to th garage for verification; but pls let me know your opinion.

    Mistico
     
  2. johnk...

    johnk... F1 World Champ
    Owner

    Jun 11, 2004
    11,233
    CT
    Full Name:
    John Kreskovsky
    #2 johnk..., Sep 5, 2018
    It could be a lot of things but it should not consistently foul plugs every couple of months, especially if it's always on the same side. Could be anything from weak spark, running rich to low compression. If the plugs are getting fouled you need to know it it's fuel or oil fouling.
     
  3. Wade

    Wade Three Time F1 World Champ
    Owner

    Mar 31, 2006
    32,793
    East Central, FL
    Full Name:
    Wade O.
    #3 Wade, Sep 9, 2018
    O2 sensor dirty?

    Here's an interesting paragraph from the WSM.


    Image Unavailable, Please Login
     

Share This Page