Ok whats this noise on my 328GTS | FerrariChat
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Ok whats this noise on my 328GTS

Discussion in 'Technical Q&A' started by Nationaltec, Aug 21, 2004.

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  1. Nationaltec

    Nationaltec Karting

    Dec 22, 2003
    157
    North County
    Full Name:
    Patrick
    #1 Nationaltec, Aug 21, 2004
    Although minor, this noise is driving me nuts… At exactly 3200 rpm my engine has a slight tambourine sound. Only at that RPM will that noise occur, before and after that point nothing. (not a rattle, just a very faint jingle)

    Attempting to duplicate the sound out of gear is fruitless but I’m positive it’s coming from the top of the engine.

    Note: I had my 30K done in March and the car runs perfect….

    Any suggestions would be appreciated.. I’m lost on trying to find this problem and although minor it's real annoying…

    Thanks
    Patrick
     
  2. ferrarifixer

    ferrarifixer F1 Veteran
    BANNED

    Jul 22, 2003
    8,520
    Melbourne
    Full Name:
    Phil Hughes
    #2 ferrarifixer, Aug 21, 2004
    mate..thats not a tambourine, thats an orchestra.

    it wasn't serviced at "Symbol lic" was it??
     
  3. cal355

    cal355 Formula Junior

    Jun 16, 2004
    383
    San Francisco
    Full Name:
    Cal
    #3 cal355, Aug 21, 2004
    Could be the cam belt tensioners not ajusted properly and belts interfering with the cam belt covers.Usually happens after major service and the new belts stretch after driving a few hundred miles.
     
  4. Rifledriver

    Rifledriver Three Time F1 World Champ

    Apr 29, 2004
    37,288
    Cowboy Capitol of the World
    Full Name:
    Brian Crall
    #4 Rifledriver, Aug 21, 2004
    If the noise started after the service a common problem on 308/328 is the routing of the A/C hoses that need to be disconnected during the service. It happens at about the RPM level you describe and is caused by the hoses vibrating against body work or the fuel tank due to being twisted wrong and putting pressure against one or the other of them. If you take the wheel, inner fender and air intake off you can get in there and either move or insulate them, you should be able to run the motor while it is still on jack stands to confirm you have gotten rid of the noise. While you are under there you should also look at the coolant pipe from the thermostat housing to be sure it is not hitting either the fuel tank or the alternator pulley, that could also be causing your noise as well.
     
  5. Lawrence Coppari

    Lawrence Coppari Formula 3

    Apr 29, 2002
    2,192
    Kingsport, TN
    Full Name:
    Lawrence A. Coppari
    #5 Lawrence Coppari, Aug 21, 2004
    I have had the air intake vibrate against something in the passenger rear wheel well - perhaps the fender liner. This goes back several years so my memory is foggy other than it was the air intake. It had wear spots where it was touching another part. Vibrations occurred between 3 and 4K rpms. Mine is a 1987 328GTS. The noise was more of a buzzzzzzzz.
     
  6. tbakowsky

    tbakowsky Two Time F1 World Champ
    Consultant Professional Ferrari Technician

    Sep 18, 2002
    20,044
    The Cold North
    Full Name:
    Tom
    #6 tbakowsky, Aug 21, 2004
    Check the exhuast manifold sheilds. These things come loose and rattle around like crazy at certain RPMs. Very easy to check. All ya gotta do is jack up the rear of the car,support on jack stands,crawl undernieth and see if you can move the sheilds around by hand. Better yet just tap on a solid part of the engine and get them to rattel around,then hold the sheild while tapping again. If the noise disappears,then you have found your rattle.
     
  7. chaa

    chaa F1 Veteran

    Mar 21, 2003
    5,058
    #7 chaa, Aug 21, 2004
    I had that very same jingling noise from the top of my engine on my 328 at low reves under load. I asked the same question on this forum but i sourced it to one of the rear (bulk head)exhaust bolt washers that worked loose and was makeing a jingling/tambourine noise. Was a pig to get to(very tight for my hands). Check the bolts for looseness.
     
  8. Nationaltec

    Nationaltec Karting

    Dec 22, 2003
    157
    North County
    Full Name:
    Patrick
    #8 Nationaltec, Aug 23, 2004
    Thanks guys,

    Now that you mention it.. I did have a Tubi installed.. I'll start with shield and try some of the other suggestions as well..

    Thanks for all the insight everyone... I'll post the findings....!!

    Patrick
     
  9. Kuhl328

    Kuhl328 Rookie

    Aug 7, 2004
    45
    Cincinnati. OH
    #9 Kuhl328, Aug 25, 2004
    Just took delivery of my 328 two days ago so not at all familiar with the car yet. Runs great and had cam belts and all other belts changed before shipment. On acceleration only I get this loud metallic jingling sound but goes away when take foot off the gas. Seems like sound goes away some when engine gets hot. Does this make sense to anyone, it sounds like a volkswagen bug used to sounds under acceleration. Kinda metallic like a chain jingling. It is very loud.
     

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