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To Seafoam or not to Seafoam

Discussion in '308/328' started by Sherstcp, Jun 18, 2014.

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  1. Sherstcp

    Sherstcp Karting

    Dec 28, 2012
    51
    #1 Sherstcp, Jun 18, 2014
    Last edited: Jun 18, 2014
    Sigh...I started my 85 QV the other day for the first time in a couple of weeks and it immediately started to smoke out the exhaust. I popped the back and heard the clicking of what sounds to be a stuck valve. After about 30 seconds it went away. SO...clearly this is a sticky valve, correct? Normally I would throw a can of seafoam in and run it for about 100 miles. Any other advice? Other/better products? The car has been religiously serviced and kept in great shape. It doesn't sit MUCH, but occasionally sits for a couple weeks at a time. Is this normal for a car that has 47k miles???
    Thanks in advance!


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  2. thecarreaper

    thecarreaper F1 World Champ
    Silver Subscribed

    Sep 30, 2003
    18,071
    Savannah
    #2 thecarreaper, Jun 18, 2014
    Seafoam for fuel and Marvel Mystery oil for oil.
     
  3. MNExotics

    MNExotics F1 Rookie
    BANNED

    Dec 13, 2010
    2,631
    Good Thunder
    Full Name:
    Ben Gruenzner
    #3 MNExotics, Jun 18, 2014
    +1
    Adding a quart of kerosene to the oil and running it for 10 minutes is an old trick that works too. Change your oil when done
     
  4. godabitibi

    godabitibi F1 Veteran

    Jan 11, 2012
    6,329
    Papineauville, Quebec
    Full Name:
    Claude Laforest
    #4 godabitibi, Jun 18, 2014
    Are you sure it's not the A/C belt. A common clicking noise.
     
  5. spirot

    spirot F1 World Champ

    Dec 12, 2005
    15,125
    Atlanta
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    Tom Spiro
    #5 spirot, Jun 18, 2014
    This is my vote.... when you let it sit again and it starts to click - spray some belt conditioner on it and see if it immediatly goes away. the acc belts...
     
  6. Sherstcp

    Sherstcp Karting

    Dec 28, 2012
    51
    #6 Sherstcp, Jun 18, 2014
    But the smoking?


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  7. jm3

    jm3 F1 Rookie

    Oct 3, 2002
    4,364
    United States
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    JM3
    #7 jm3, Jun 18, 2014
    Moisture in the cats.

    sent remotely
     
  8. pappy.72

    pappy.72 Formula Junior

    Nov 13, 2010
    536
    Elgin, IL
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    Dave
    #8 pappy.72, Jun 18, 2014
    Drive it more and it will be cured.
     
  9. George Vosburgh

    George Vosburgh F1 Rookie
    Silver Subscribed

    May 26, 2011
    4,381
    Pittsburgh, PA / Chautauqua, NY
    #9 George Vosburgh, Jun 18, 2014
    I used to use Marvel Mystery Oil in the fuel on my XKE, anyone use it in the 308?
     
  10. Saabguy

    Saabguy Formula 3

    Mar 28, 2012
    1,785
    Shreveport, LA
    #10 Saabguy, Jun 18, 2014
    Only used it in the Judson Supercharger for the Bugeye Sprite..

     
  11. gilligan308

    gilligan308 Karting

    Dec 8, 2008
    141
    S.W.Florida
    Full Name:
    Brian
    #11 gilligan308, Jun 18, 2014
    Sea foam has too much alcohol in its formula. It is better for putting in the crankcase on really dirty oil but not in a fuel tank unless you burn up all of the fuel. It is like ethanol plus. Not good. Yamaha/Ringfree in oil or fuel or chevron techroline . Mercury makes one also. it is a heavy detergent type to keep carbon from sticking on valves. BUT for a stuck valve marvel oil into the intake seems best as it lubricates the valve stem. Tranny fluid seems to work well as it was an old mechanics tune up trick.Did I say OLD too loud? I have arrived there.
     
  12. 2dinos

    2dinos F1 Rookie

    Jan 13, 2007
    3,032
    #12 2dinos, Jun 18, 2014
    +1 - I vote for the dumb belts.
     
  13. Steve King

    Steve King F1 Rookie

    Feb 15, 2001
    4,367
    NY
    #13 Steve King, Jun 19, 2014
    I didn't think it was possible to "have a stuck valve" in these engines without damaging them.
     
  14. Sherstcp

    Sherstcp Karting

    Dec 28, 2012
    51
    #14 Sherstcp, Jun 19, 2014
    Moisture in the cats it is! Fired it up last night and it purred like a kitten, excuse the pun. I listened real close and it does sound like the clicking is coming from the belts


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