308 Mondial Ticking when cold after waterpump rebuild and cambelt replacement | FerrariChat

308 Mondial Ticking when cold after waterpump rebuild and cambelt replacement

Discussion in 'Technical Q&A' started by keithjallen, Mar 10, 2005.

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  1. keithjallen

    keithjallen Rookie

    Feb 19, 2004
    25
    Surrey England
    Full Name:
    Keith Allen
    I recently replaced the cambelts and rebuilt the water pump (bearings and seals) on my 84 Mondial 308 QV. When the engine is cold there is ticking or clicking noise seems to be coming from the front of the engine. When the engine warms up the noise disappears. Has anyone had a similar experience and what was the problem please?
     
  2. Ken

    Ken F1 World Champ

    Oct 19, 2001
    16,078
    Arlington Heights IL
    Full Name:
    Kenneth
    Wild shot in the dark, but I had the same thing once. It would only happen at start up and then vanish in a few minutes. It turned out to be the rotor in the distributor fouling on the wire posts! I had to carve the plastic down to fix it. I would be shocked if this was it for you though!

    Ken
     
  3. Steve Magnusson

    Steve Magnusson Two Time F1 World Champ
    Lifetime Rossa

    Jan 11, 2001
    26,785
    30°30'40" N 97°35'41" W (Texas)
    Full Name:
    Steve Magnusson
    Yes -- one test you might try is spraying a little belt dressing (or WD40) on the v-belts (although the noise was remarkably "metallic", in my case, it was the AC v-belt riding up one side of the sheave and then "snapping" back down into place. Same symptom you describe -- goes away after the belt heats up a little from running).
     
  4. tomoshea

    tomoshea Formula Junior

    Dec 29, 2003
    541
    Ireland
    Full Name:
    Tom O'Shea
    Depending on the belt you put on you can get a static discharge from the belt rubbing against the metal, this usually sounds like a ticking and sometimes sounds like you have a bad bearing someplace. easiest solution is to spray WD 40 on the belt and see if it dissapears, if it does then it is just static discharge - anyway this disapears as the belts and engine warm up also!
     
  5. keithjallen

    keithjallen Rookie

    Feb 19, 2004
    25
    Surrey England
    Full Name:
    Keith Allen
    Thanks very much will give it a try.
     
  6. mikeg

    mikeg Rookie

    Nov 3, 2003
    24
    The same thing happened to me. It seemed to me that the oil is not getting up to the valves until the oil heats up. I put some top cleaner in the oil and hasn't heard it since... give it a try
     
  7. sp308qv

    sp308qv Karting

    Nov 20, 2003
    101
    South Jersey
    Full Name:
    Steve Ponzetto
    I had the same problem, check the belt tension and make sure the alternator bracket is intact
     
  8. GTO84

    GTO84 Formula Junior

    Dec 13, 2003
    566
    If the timing belt covers are installed wrong, they will rub a few different pulleys causing noise.
     
  9. DN35

    DN35 Formula Junior
    BANNED

    Nov 22, 2003
    611
    Illinois
    Full Name:
    D. Norton
    I had a little ticking noise in my 308. Dealer told me it was a vacuuum issue in the power braking system. No functional impact but it makes a little noise about 2-3 times a second.
     
  10. TOM B

    TOM B Formula 3

    Jul 24, 2003
    1,038
    Orange County, NY
    Full Name:
    Thomas Buckley
    Really nothing to worry about. I had the same noise, when cold, after my belts were changed. Mechanic told me that the alternator belt takes a set when cold which works itself out after it warms up.

    No, i'm not a Ferrari mechanic.....but I did sleep at a Holiday Inn Express last night. My wife threw me out again. :(


    Tom
     
  11. Verell

    Verell F1 Veteran
    Consultant Owner

    May 5, 2001
    7,022
    Groton, MA
    Full Name:
    Verell Boaen
    One cause of the ticking can be pulley miss-alignment. The belt rides up on one side of the pulley, then snaps down into place. If the WP pulley isn't all the way on the shaft, or the alternator bracket is cocked, you can get this effect.


    Especially noticable if the pulley has been media blasted, or refinished leaving a slightly rough texture in the belt groove. Wear often polishes the pully's side to the point that the snapping doesn't occur. Then it appears after some service work.
     
  12. zebra308

    zebra308 Formula 3

    Jan 14, 2004
    1,339
    All Flimmits
    Full Name:
    Ruffis Leekin
    I have the same condition on my 308. I was told by a mechanic that it was the result of one of the air-injector tubes having a pinhole that would close after things warmed up.
    I was skeptical that this was the problem. It sure sounded like a belt to me. I was afraid it was the timing belt making the noise. It's very unnerving hearing the sound and not knowing what it is.
    I'm going to try the WD-40 and see if that makes it stop.
    Thanks for the tip,
    Will
     
  13. hardtop

    hardtop F1 World Champ

    Jan 31, 2002
    11,294
    Colorado
    Full Name:
    Dave
    My money is on the a/c belt. This is very common with QV's and 3.2's.

    Dave
     
  14. matteo

    matteo F1 World Champ

    Aug 1, 2002
    13,748
    On a plane somewhere
    Full Name:
    Heir Butt
    Roger that.
     
  15. snj5

    snj5 F1 World Champ

    Feb 22, 2003
    10,213
    San Antonio
    Full Name:
    Russ Turner
    It was my a/c belt.
    WD40 cleared mine up.
    Good luck!
    rt
     
  16. p4traverler

    p4traverler Rookie

    May 24, 2004
    9
    BRADWELL ON SEA
    Full Name:
    GRAEME KERSLEY
    I have had the same problem before and it was traced to a build up of metal on the clutch face of the air con pump,
    hope this is of help, graeme k
     

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