long Crank Times after sitting | FerrariChat

long Crank Times after sitting

Discussion in '612/599' started by kenehresman, Nov 18, 2016.

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  1. kenehresman

    kenehresman Karting

    Jul 15, 2012
    73
    #1 kenehresman, Nov 18, 2016
    Seems like a check valve.... takes long crank times, after sitting 1 day it takes a bit to get started. Last service note from Ferrari says possible fuel pump... anyone? How difficult to change the fuel pump? in the tank? any help appreciated...

    thx
     
  2. tazandjan

    tazandjan Three Time F1 World Champ
    Lifetime Rossa Owner

    Jul 19, 2008
    38,085
    Clarksville, Tennessee
    Full Name:
    Terry H Phillips
    #2 tazandjan, Nov 18, 2016
    Last edited by a moderator: Sep 7, 2017
    There are two fuel pumps and the WSM says the fuel tank must be removed to replace the pumps. On the earlier V12s like the 575M, there was an opening on the rear of the tank that allowed the pumps to be removed while the tank is in place. The openings migrated to the top of the tank on the 612, probably to cut down on leaks, so you have to remove the tank to get at the openings and pumps.

    The Ferrari dealer should be able to check the pump pressure before having to replace a pump.
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  3. kenehresman

    kenehresman Karting

    Jul 15, 2012
    73
    #3 kenehresman, Nov 19, 2016
    thanks, this looks like about 5K or more... so it will have to wait until spring
     

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