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  1. alldodge

    7.4L Bravo intermittent misfiring, & sometimes starts and runs fine?!?!?

    Yes, the tank has an anti siphon valve on it and should stop air from going in.
  2. alldodge

    2001 Mercruiser 5.0 efi wont start

    The timing may be dead one, but it is a very good idea to set/check timing. All you need is a timing light and a paper clip. Connect the timing light, start the motor then install a paper clip on the DLC connector between pins A and B. The connector is next to the ECM and should have a...
  3. alldodge

    350 Mag MPI Questions

    If your experiencing vapor lock a check valve would not help IMO. There is a check valve already on your boat and its called the antisiphone valve which is on the fuel tank. Merc installs booster pumps to help keep the fuel lines under more pressure which helps but does not remove the issue...
  4. alldodge

    3.0 l mercruiser (1989) DDIS conversion

    There are three wires connecting to the DDIS and the same wires connect to the EST. Just need to splice those into the EST distributer and coil. Purple - Ignition power Gray - Tachometer White/Green - Shift Interrupter
  5. alldodge

    Bravo 1 upper gear set clutch timing question??

    There where changes in the gears in the early Bravo housing gear set. In order to figure this out were going to need the serial number of the drive. If that is not available going to need to look at the housing and look for a circle stamp and a number near it. There was also two different...
  6. alldodge

    New alternator no power

    Howdy There is a 90 amp fuse which is connected to the starter bolt and then from it is connected to the ALT. Check that fuse
  7. alldodge

    Mercruiser 3.0 Fuel Issues

    To test the fuel pump you need to put a Tee inline between the pump and carb. You can either make it out of barbed fittings and fuel line, or get an adapter for the carb. Pressure should be 4 to 7 psi, using a vacuum fuel pump tester...
  8. alldodge

    Closed Cooling System on Port Engine Running Hot(ter)

    Yes, manual 16 is the one, and if you look on page 5C-60 it shows an illustration of the fuel service tap. That tap is a shrader valve which allows the pressure gauge to be attached. Running one from a line going into the VST just gives you your low pressure pump output. The scanner will give...
  9. alldodge

    1997 Mercruiser 4.3LX Gen + convert to electronic ignition system

    Looks like you have the TBV ignition. Here is you troubleshooting chart And wiring
  10. alldodge

    Closed Cooling System on Port Engine Running Hot(ter)

    I don't think your moving enough water, if that is the pump or a restriction don't not right now. Water coming in is the same, it goes thru the cooler, heat increases. I see D as coming out of the HE, and this is where the temp jumps up. The heat change from then on is about the same as the...
  11. alldodge

    Oil pressure Sensor Leaking/Replacement

    Howdy That is the correct part for the oil gauge sender. Being brass it shouldn't rust off like the last one, but it may not be brass, might be zinc plating. If it's zinc as in the pic below, it will still rust, may want to paint. The sender has nut on the bottom, need a short open end...
  12. alldodge

    Still getting 12v to Coil after replacing resistor wire

    Three things 1- Silicone is not gas resistant and over time will dissolve and the tank will leak. Suggest going to an auto store which sells cork gasket material and make your self another gasket 2- The tank appears to have all kinds of rust or crud in there, going to need to keep your filters...
  13. alldodge

    1986 Mercruiser 140 Blown Head Gasket?

    My mistake........... The pics come from No 8 which is for the 470, should have kept going for manual 10 The 140 should be 0 lash and then one additional turn. Head bots 93 and retorque after first 20 hours
  14. alldodge

    1986 Mercruiser 140 Blown Head Gasket?

    perfect seal
  15. alldodge

    Mercruiser 5.0 MPI no water pressure but cooling okay

    The testing of the switch has come up many times and as yet there is not a clear way to test it. The PCM 555 manual only shows the connections and what the pressures should be when running, but no exact figures to diagnose. The manual just says if found faulty then replace. As before they...
  16. alldodge

    2001 Mercruiser 5.0 efi wont start

    Your wiring diagram
  17. alldodge

    1986 Mercruiser 140 Blown Head Gasket?

    1) No, don't retorque 2) Yes, use perfect seal 3) Being a 1986 motor you would torque rocker nuts to 20 ft lb using the below method Here is a link to the manual http://boatinfo.no/lib/mercruiser/manuals/mercruiser8.html#/0
  18. alldodge

    Another Gimbal Bearing Question

    The bearing doesn't "appear" to have enough shoulder on it, should resemble this The shoulder should be on both sides to help keep it centered on the shaft, also help timt
  19. alldodge

    350 mag won't rev over 2k in the water

    Knock sensor testing
  20. alldodge

    Blown up Alpha

    The pic looks like the something hit it from the outside not the inside going out. Probably an illusion, and glad its SEI they do stand behind their drives
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