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  1. alldodge

    Non-Vortec 5.7 Mercruiser Themostat Housing Question

    Not knowing which model, I'm going to assume you have one similar to the one on the left Thinking you want to go to new style like this, which is a V6 but is the same for you. As FT mentioned, if you have a bravo drive then the inlet hose comes from the belt driven pump. You will also not...
  2. alldodge

    350 mag mpi surging under load

    Last set
  3. alldodge

    350 mag mpi surging under load

    The actual screen shots were pretty small in jpg so chopped it up
  4. alldodge

    Livewell Headache

    Your system should be setup the same according to the site. As Harley said, the Auto just turns the pump on and back off every so many minutes. The valve going to the pump should work the same way, and you should have the same similar setup. It could be "maybe the pump is gone" :noidea: just...
  5. alldodge

    Livewell Headache

    Have not used one but looking at the design I would say the valve on the pump should close off or open tubes as needed. http://www.g3boats.com/uploads/sites/4/website/Pages/676/g3_2012_owners_manual-optimized.pdf
  6. alldodge

    1988 mercruiser mei 7.4 thunderbolt - no spark

    Howdy This is the troubleshooting guide to the TB ignition. It is for a TB-5 but TB-4 is the same. Test lights are good for quick checks but you need a voltmeter
  7. alldodge

    Mercruiser 3.0 TKS possible failure

    Your symptoms tell me its the accelerator pump, not the module. The module when cold and open allows the carb to put more fuel in the motor. Once warm the module closes off and then there is less gas. If the module is open (retracted) then you should hear some extra hissing from the carb...
  8. alldodge

    Inboard '95 Mercruiser GM 350 EFI Magnum Skier limited top speed

    If your testing the pump only connect direct from the output of the high pressure pump. The regulator or injectors are not in the mix and have no effect. If pressure drops back off then the HP pump is leaking internally. If block off is measured after the TBI then the regulator and the...
  9. alldodge

    2001 MC 5.0 EFI Throttle Body-appear to be running rich. Trying to help a friend

    Make a scan tool with a paper clip and a resistor LED
  10. alldodge

    5.7 cooling question

    Yes need to swap those two hoses (showing V6 but V8 is the same)
  11. alldodge

    external regulator wiring.

    The reason it wouldn't start is because the slave relay (item were discussing) was not working. The slave is used to connect a high current connection (from battery to starter solenoid) instead of the high current coming from the key switch directly. The first pic is how it should be wired...
  12. alldodge

    external regulator wiring.

    That's not a regulator I've ever seen it looks to me like a starter assist relay(Merc calls them slave relay).
  13. alldodge

    350 mag mpi surging under load

    Things that tell the ECM to vary power, MAP/MAT, TPS, CPS and all need a good steady 5V supply Measure the 5V line and see if it varies, if not then put the meter on the sense leads one at a time on the sensors
  14. alldodge

    2001 MC 5.0 EFI Throttle Body-appear to be running rich. Trying to help a friend

    You need one of these (91-806901) to attach at the TB to measure fuel pressure
  15. alldodge

    Volvo Penta Fuel Issue

    Howdy The motor uses very little fuel on muffs, and builds more heat and has more vibration on the water. When the motor is being started power flows from the starter to the fuel pump relay thru a diode. Once the motor starts the alternator sends power to the fuel pump relay thru another...
  16. alldodge

    350 MPI Spark

    Sounds like your going to need a scanner to read codes. Your motor has the HVS distributor and right now I don't see an issue with spark. Bring the motor around to TDC on number 1 cylinder and check the location of the rotor to distributor location in pic below If this is correct, do a...
  17. alldodge

    Aq131a exhaust manifold

    The imgr link in first post works, the google doesn't Yes there should just be a plug (item 22) in there. Probably used for draining during winterization https://www.marinepartseurope.com/en/volvo-penta-explodedview-7744650-26-18786.aspx
  18. alldodge

    Volvo Penta wiring HELP PLEASE!!!!

    Being your GXI is newer, I would think you should have the 555 ECU which would have 3 rows of pins. Just incase you posting switched the counts, here is some from the Merc side. Don't know if VP used the 555 in your year but it might help. Wire color may be different
  19. alldodge

    Volvo Penta wiring HELP PLEASE!!!!

    All I'm seeing are two pin rows for GI and GS http://boatinfo.no/lib/volvo/manuals/ef_wiring.html#/12 The fuel pump is turned on by the ECU supplying a ground to the relay coil. The GXI fuse/relay panel This is all I have, hope you can figure it out
  20. alldodge

    5.0L EFI Question

    The one above shows the pink goes to the fuse. This is the whole thing but will probably be hard to read
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