Search results

  1. alldodge

    Possible short 7.4 Mercruiser

    Agree TB4 is no longer made, IMO best replacement is Delco EST
  2. alldodge

    1986 merccruiser weird noise

    You nailed it dubs Been sitting for several years Pull the drive, inspect the bellows, bearing and U joints. Replace the impeller and or pump housing. Replace gear lube
  3. alldodge

    1986 merccruiser weird noise

    If sound changes as wheel is turned, the may be U joints. If it changes as rpm's increase then maybe bearing. Also check lube to see if lube remains clean
  4. alldodge

    Mercruiser 3.0 stalls when putting into gear

    Yes in most all cases. We don't know which 3.0 you have so not sure if its correct, needs at least a year but serial numbers are best
  5. alldodge

    Mercruiser 3.0 stalls when putting into gear

    Correct, open water The Alpha drive uses what's called a dog clutch. When in gear and under load (in the water) the forces on the prop keep the clutch from releasing. So what the interruptor switch does is cause the motor to stumble which unloads the clutch so it can be moved. It doesn't...
  6. alldodge

    Mercruiser pre-alpha swap

    Hey @Bt Doctur can you advise
  7. alldodge

    Trim limit not working on Alpha 1 Gen 2 after I cleaned connection

    Most likely it needs to be adjusted. Place a ohm meter across the 2 leads and rotate it to see if the circuit opens at some point. Do remove from drive and rotate by hand
  8. alldodge

    1996 4.3 Mercruiser issue

    Use an IR temp gun and verify its not overheating. Measure the thermostat housing Check your timing, TB4 is 8* and TB5 is 10* BTDC If all is good, get it warmed up and check compression
  9. alldodge

    Time for a ‘new’ boat?

    On OSO most all of them say the same thing. Don't buy a boat with the idea of making it into what you want, just buy what you want
  10. alldodge

    no power to ignition

    Check the 90 Amp fuse, it might have blown. Its on the starter post. If that is good, then check your 20 amp ignition fuse on the red/purple wire going to the key switch under the helm
  11. alldodge

    Mercruiser 3.0 stalls when putting into gear

    Might be the shift interruptor switch. Do this test in and open area in the water. Disconnect one of the wires at the shift switch, then see if the issue is fixed. Note: with the wire disconnected, you may not be able to get the drive into neutral. May have to turn motor off to get it back in...
  12. alldodge

    1986 merccruiser weird noise

    Sound isn't clear enough for me. If its a growling it may be the bearing. Was the trim up high or all the way down?
  13. alldodge

    No purple and white wire for base timing

    I'm able to see the wires but not the module Your motor could have a TB4 or TB5 module. The TB4 is mounted on the exhaust elbow (think that is where yours is), and the TB5 is mounted on the Distributor Both TB4 and 5 have white/red and white/green The purple out of the module is turned ON by...
  14. alldodge

    350 mag wont run no fire

    Need to know which 350 mag, got a serial number?
  15. alldodge

    1999 7.4 (L29) only hitting 3400RPM at WOT

    Agree "base timing mode" Which searay is it (looking for weight and drive ratio)? Depending on the boat the 26 pitch props might be a bit to high. Props might have been changed, compression might be low
  16. alldodge

    Kills at midrange throttle settings

    I messed up, had been looking at a VP issue and thought I was on the same thread We don't know if you have a 2 or 4bbl carb. If 4bbl then it should be a weber as Lou mentioned. If its a 2bbl then its a Merc (like the rochester 2GC) In any case the issue is most likely in the carb
  17. alldodge

    Carb or worse?

    Something is missing but I'm leaning toward spark. Might not be consistent
  18. alldodge

    Kills at midrange throttle settings

    1994 holley carb, right??? Most likely the power valve in the carb.
  19. alldodge

    1993 5.7 Mercruiser Low Power and Stumble at WOT

    While some needle seats can take pressures above 7, the normal high is 7 Can be easy to see if the seat isn't holding. Look down the carb when its running and right after shutting off to see if you can see it dripping Yes a regulator can be added
  20. alldodge

    Top Speed Issues

    Nope, need to burn or remove all the fuel. Having to increase idle and then it gets lower again is signs deposits are probably building up. Old fuel has less BTU's so less power. Once you go thru the fuel then get new, and my guess things will get better. Try not to add new fuel to the old...
Top