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  1. alldodge

    1973 mercruiser throttle info

    This thread list a 4shared link to the full manual left by the great DonS https://forums.iboats.com/threads/mercruiser-service-manual-1.529805/
  2. alldodge

    Penta Cooling Hose

    Howdy Need more info on what motor you have GL, GXI etc, and the cooling system? If you have a serial number this would help Does it have closed cooling and post some pics of what your dealing with
  3. alldodge

    Prop sizing on 2008 Glastron DS-205 with the 5.0GL engine

    If your boat normal load is 2 adults and 4 kids, and your previous WOT was between 4400-4800 RPM then yes, keep the 19. If under normal load your not reaching WOT RPM, then tell use what you are reaching and we can help
  4. alldodge

    Mercruiser/Volvo plastic dist repair item

    Thanks BT
  5. alldodge

    7.4L Overheating

    Stated problem: No water coming from the pump Need to find out why water isn't flowing. Its either not getting to the pump, or not getting from the pump to the thermostat housing. Don't know why anything would clog, but the oil cooler and PS cooler are not under the motor, Suggest back...
  6. alldodge

    7.4 MPI Stalling wont idle.

    Bad fuel and bad fuel pressure regulator.
  7. alldodge

    EFI specs for techmate pro

    Normal 750 rpm idle the IAC would be 20-40 counts TPS volts look good Battery volts (if throttle was bumped to 1500 for a sec) should be reading 14V Normally if the motor is not in base timing mode the advance will be all over the place but still close to 8*. Was the advance rock steady?
  8. alldodge

    1993 Sea Ray/ Mercruiser 4.3/ Thunderbolt IV ignition timing

    TB-4 for 1993 V6 in manual 18 list 8* BTDC
  9. alldodge

    Volvo Penta 8.1 PFI missing on 3,5,7 and 8

    This is the GXI-C/D and may help. The injectors have full time 12V via the Pink/white coming from the main power relay (MPR) then goes to a connector which its split into Pink and Pink/White wires. They are batched fired by applying a ground by the ECM The coils are all powered by the...
  10. alldodge

    Volvo Penta 8.1 PFI missing on 3,5,7 and 8

    Looks are deceiving, might look good but there is a connection in the harness or connector which is not making contact. Swapping is not the issue, need to find out why the coils are not firing. This is why wires need to be ohmed out (ring out). The coils just like the injectors and feeds...
  11. alldodge

    Fuel system selector/shutoff valve

    No, pump the throttle just pumps what is in the carb. If nothing is in the carb, there is nothing to pump If you have mechanical fuel pumps, crank 10 seconds, let sit for 30 seconds and repeat. Do that twice then try a couple pumps and crank Can also drip just a very slight bit of gas down...
  12. alldodge

    Temperature gauge issues? Can't get a temp reading?

    I'm wondering if you bought the water temp switch and not the temp sender. The switch is open until it gets around 200*F then it closes. The temp sender
  13. alldodge

    Frustrated fuel

    Are you asking about the 300 rpm's? If so, for the ECM to turn ON the injectors it first has to see that the distributor is firing. If the Tach doesn't show the rpm's then either the Tach doesn't work or the distributor isn't firing
  14. alldodge

    Temperature gauge issues? Can't get a temp reading?

    Clarification please; when the sender was in the hot water where you measuring using the ohms scale? and did the resistance get less as the temp raised?
  15. alldodge

    Frustrated fuel

    Code 12 just means there are no stored codes When cranking do you see the Tach show at least 300 rpm?
  16. alldodge

    Volvo Penta 8.1 PFI missing on 3,5,7 and 8

    So using noid light on injectors there were no misses? If correct then this is a coil firing issue. I don't have a PFI manual but do have GI and GXI, or was the PFI a slip? Should ring out the wiring back thru connectors to the ECM.
  17. alldodge

    Fuel system selector/shutoff valve

    Yes, and with you running out of gas, it shows you were only running on one
  18. alldodge

    EFI specs for techmate pro

    Agree VP doesn't put to many actual values for a given sensor like Merc and Indmar does. The GXI manual list some fuel pressure values and 5V sensor but not a lot more. They are using mostly GM/Delphi sensors so could use the Merc manual to get some ideas
  19. alldodge

    Volvo Penta 8.1 PFI missing on 3,5,7 and 8

    Do you know if the misfire is caused by fuel injectors or spark plugs? NOID light can be used on injectors to see if they are turning ON/OFF
  20. alldodge

    Stalling, Alarm sounding every 60 seconds

    That is the number one failure of the Merc motors. They fail often and there is no pressure issue. Dang things are expensive for what they are Could test with a mechanical gauge (0-30 psi) Tee'd in same location
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