348 engine noise | FerrariChat

348 engine noise

Discussion in '348/355' started by kend996, Jul 23, 2022.

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  1. kend996

    kend996 Rookie

    Jan 6, 2013
    19
    Houston
    Help! Engine noise!!
    First off thanks for any responses and advice!!
    My situation, my 91 348 was at a shop for a respray for over a year and a half in another state I’m in Texas it was in Louisiana. I have it back with me now, not painted and barely running(long painful story). I drove it to the shop in good running order( engine out service done within about 6k miles). I get it back put a new battery check oil and coolant and give it a start, oil pressure is good and everything seems ok. I open the engine bay and hear what I assume is valve train noise…..tapping that that matches rpms. Any suggestions on what to do next is greatly appreciated
     
  2. Ferrarium

    Ferrarium F1 Veteran
    Sponsor Rossa Subscribed

    Jul 28, 2018
    5,728
    Central NJ
    Full Name:
    Eric
    If its valve train, then check oil level first, if good then pop valve covers off and check tappet shim clearance and cam cap torque. Specs are in the WSM. I think clearance is .20 to .50 and torque is 8.8nm if I recall but double check.
     
  3. GTO Joe

    GTO Joe Formula 3
    Silver Subscribed

    Feb 15, 2013
    1,002
    Charlotte, NC
    Full Name:
    Joseph Troutwine
    If I had a noise like you describe the first thing to do is try to isolate it to a particular area. The good old way is to get a short length of hose and place one end at your ear and then go around the idling engine to see where the sound is coming from. I once had what sounded like a rod issue only to locate it to the front bearing of the AC compressor. Good luck and keep us posted.
     
  4. kend996

    kend996 Rookie

    Jan 6, 2013
    19
    Houston
    thanks for your help! Gonna try and locate it first
     
  5. kend996

    kend996 Rookie

    Jan 6, 2013
    19
    Houston
    going to try that this morning thank you
     
  6. vvassallo

    vvassallo F1 Veteran

    Aug 4, 2006
    8,325
    Palos Verdes
    Full Name:
    Vince V
    Might also be an injector. If an engine out was done, they might have mixed up the biscuit spacers or messed up the valve lash. Either way, get the stethoscope.
     

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