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  1. alldodge

    anodes

    The Mercathod system works if its working properly. Only way to know if it is is to measure with a digital meter and a special probe. Fresh Water Areas - 620 - 1180 Millivolts with Digital Meter Salt, Polluted or Mineral Laden Water Areas: 750 - 1180 Millivolts with Digital Meter And Note...
  2. alldodge

    1974 7.5 spark issue

    Its the opinion thing. I like Champ but many don't.
  3. alldodge

    1974 7.5 spark issue

    Your in the OB section and listed a 7.5 Do you mean a 7.4 Mercruiser? If so, I would run Champion or AC but that's just my opinion. NGK are fine but I just don't use them. My 1995 7.4 came with Champion and when replaced after 22 years they still look good Edit: your might be talking about a...
  4. alldodge

    Power Trim Help on 3.0 Mercruiser Alpha 1 Gen 2 will go down but not up HELP!

    Should use 10W30 or 10W40 before straight 30W What your experiencing is the seals in the trim cylinders are binding. Get the rebuild kit and should be good
  5. alldodge

    Mercruiser 3.0L mercarb 2 barrel Help!!!

    You might be running out of fuel. What is your motor serial number?
  6. alldodge

    anodes

    Boats that sit in the water need anodes. The type (zinc, aluminum) depends on hull and drives. Outdrives are made of aluminum and most need aluminum anodes to help protect. The boat also needs a Mercathode or other for best results
  7. alldodge

    Oil Pressure sender/switch question

    Yes and No The sender and switch is sort of connected in the same area (not housing). It is usually located near the remote oil filter is connected at the block by a Tee fitting. If you order one you only get the one you ordered, not both Don't know your serial number but item 4 is the...
  8. alldodge

    Can someone review my boat wiring diagram?

    Buss bar for ground is good, note it can come from the Neg side of the Bat or from the Neg side of the fuse panel If you want to connect and forget you want to use a ACR. This way no need to switch Bats. The switch is there to be used ONLY when needed to start motor and the normal start Bat...
  9. alldodge

    Overvoltage error on Kohler Generator

    Not knowing originally you were seeing 150V was wondering if the 60Hz was higher and it may be causing a over voltage. If Hz was higher this would mean the motor was running at a higher RPM
  10. alldodge

    Exhaust Temp sensor 3889526 Spec?

    Get a short piece of clear hose, double barbed fitting and couple of clamps from a hardware store. Disconnect the hose going to the HE coming from the raw water pump and place it inline with the hose. Then run the motor to see if you see air bubbles
  11. alldodge

    Alarm Going Off for Mercruiser 350 Mag MPI

    I'm with Earl, your motor needs to be scanned for codes. I would suspect the water pressure sensor or exhaust overheat. Its not the gear lube because that one went to a 2 beep and not constant
  12. alldodge

    4.3L Merc 2bbl w/ thunderbolt IV ignition. Still wont start.

    If you have a Tach, disconnect the Gray wire on the negative side of the coil. If the Tach shorts out it won't start, so disconnect to make sure this is causing the issue
  13. alldodge

    Bennet trim tab goes down, not up, regardless of up/down button

    this
  14. alldodge

    Bennet trim tab goes down, not up, regardless of up/down button

    I'm just guessing, but not knowing exactly what type of controls you have. Mine used 2 large rocker switches which were DPDT type. It could be that inside the switch is where the problem is. At any rate need to troubleshoot to find out
  15. alldodge

    Bennet trim tab goes down, not up, regardless of up/down button

    Most likely its the switch There is several vids at the Bennett site showing how to test Here is just a pdf https://bennetttrimtabs.com/wp-content/uploads/2015/02/trimtab_troubleshooting.pdf
  16. alldodge

    U-joint seized into gimbal bearing

    cut the drive shaft with a sawzall? Don't think there is enough blades or time to do that
  17. alldodge

    U-joint seized into gimbal bearing

    Hey @Scott Danforth or @kenny nunez
  18. alldodge

    Mercruiser Alpha one Gen 2 water temp question

    What motor, serial number is best? What kind of alarm, single beep, constant beep, double beep? The Temp sender for the gauge will not cause an alarm
  19. alldodge

    Overvoltage error on Kohler Generator

    Looks like Sam has a great point With it going to 150V don't really need to figure the Hertz right now Look for a bad or broken connection
  20. alldodge

    Exhaust Temp sensor 3889526 Spec?

    Don't know to much about the VP CAT cooling system, but Merc uses what's called pop-it valves in the raw water side. The valves cause lost of issues for Merc. Does your motor have something like that?
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