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308 no rpm

Discussion in 'Technical Q&A' started by shifty308, Jan 24, 2005.

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  1. shifty308

    shifty308 Karting

    Aug 7, 2004
    75
    coulterville ca
    Full Name:
    steven schiffler
    #1 shifty308, Jan 24, 2005
    took my 308 for a drive yesterday, as i was pulling into my driveway it started running oddly. it will not run above an idle, i checked fuel delivery and it's ok so im assuming the prob. is dist. related, i have the millermon conversion with msd box, anyone out there w/similar setup had this problem? i had been running semi hard for a while with no prob. then it occured suddenly while i was going slowly, any ideas would be appreciated, as i prefer thinking it out before i tear into it. thanx in advance to anyone who has any ideas.
     
  2. 8valve

    8valve Formula 3

    Sep 3, 2003
    1,029
    Netherlands
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    Mick A.
    #2 8valve, Jan 24, 2005
    I'm not a technician, but I'm sure the first question is going to be: what kind of 308 do you have? Carbs, injection or inj.qv?
    And I know most people on F-chat prefer to answer to a person, so I would fill out my profile if I were you to get more response. Good luck!
     
  3. dm_n_stuff

    dm_n_stuff Four Time F1 World Champ
    Lifetime Rossa Owner

    Dec 10, 2003
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    Dave M.
    #3 dm_n_stuff, Jan 24, 2005
    throttle linkage ok? Will it rev if you pop the trottles at the carbs?
     
  4. bwassam

    bwassam Formula Junior

    Jan 3, 2005
    635
    North Bend, Oregon
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    Robert Wassam
    #4 bwassam, Jan 24, 2005
    Assuming that your fuel system is ok, then you have to look at the ignition. The dual point distrubutors is probably the problem. One set of points is for idle and the other is for high speed. I would look there first.

    I'm not a technician. I remember reading this in one of the many website concern with Ferraris. So I don't have any details on the distrubutors. Check out the ferrari web sites and you'll find the info there. You'll have to do some digging though.

    If your distrubutors need a lot of work, you may want to consider converting to an electronic ignition system. There's a bunch of them out there so you'll have to do a little research to see which one you like. Petronnic and crane seem to be the most popular. There's some information here on the list about the electronic systems.

    Good luck

    Bob Wassam
     
  5. shifty308

    shifty308 Karting

    Aug 7, 2004
    75
    coulterville ca
    Full Name:
    steven schiffler
    #5 shifty308, Jan 24, 2005
    the ignition system is a millermon so it is electronic (no points single dist.) and popping throttles at carbs has no effect the car is a 79 308 GTB also ichecked fuel flow and it's fine, i'm reasonably certain the prob. is ignition related, was hoping someone with a similar ig. had the same problem i'm betting it's something simple i just havent thought of.
     
  6. Jdubbya

    Jdubbya The $10 Trillion Man
    Silver Subscribed

    Dec 28, 2003
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    John
    #6 Jdubbya, Jan 25, 2005
    Try checking the plugs. See if any of them are fouled.
     
  7. Ken

    Ken F1 World Champ

    Oct 19, 2001
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    Arlington Heights IL
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    Kenneth
    #7 Ken, Jan 25, 2005
    Classic fuel flow problem symptoms, but I'll take it at face value that's not it. This is basic troubleshooting. Since your hunch is ignition, you need to swap out what you have and see if that fixes it. If so, then the Millermon gurus can advise you. If not, I'd recheck fuel flow. Replace the gas filter, the be sure the lines are clear and the pump is pumping correct pressure.

    Ken
     
  8. matteo

    matteo F1 World Champ

    Aug 1, 2002
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    Heir Butt
    #8 matteo, Jan 25, 2005

    It could also be the plug extenders. They will burn a hole and arch against the cam cover.

    Pull the spark plug extenders and look inside for white film and a blue color on the wire inside. If there is, then look on the outside of the extender and see if there is a hole.

    My car had a similar issue and I replaced them all and it cured the problem.

    Good Luck.
     
  9. BigTex

    BigTex Seven Time F1 World Champ
    Owner Rossa Subscribed

    Dec 6, 2002
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    Bubba
    #9 BigTex, Jan 25, 2005
    I've had MSDs fail outright........I took them off .......
     
  10. matteo

    matteo F1 World Champ

    Aug 1, 2002
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    Heir Butt
    #10 matteo, Jan 25, 2005
    ditto on the crane's.
     

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