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  1. alldodge

    Mercruiser/Motorola versus Stand Alone ECM's

    I would contact Bob at OBD Diagnostics and see what he can advise. Your 865926 is not listed, but if yours is bad he may be able to fix or advise other https://obd2allinone.com/mercecms.asp
  2. alldodge

    Mercruiser/Motorola versus Stand Alone ECM's

    Power that turns ON the ECM is from splice 100 coming from the key switch to pin J1
  3. alldodge

    Mercruiser/Motorola versus Stand Alone ECM's

    That's a 555 ECM The MPR is turned ON by the ECM applying a ground
  4. alldodge

    1988 GM 5L, spark plugs too tight to get out....

    No trick, they either loosen or they don't. Use a 6 point socket and a breaker bar. You could try warming the motor up to see if that helps
  5. alldodge

    Bell housing side play

    Correct
  6. alldodge

    Mercruiser/Motorola versus Stand Alone ECM's

    Those are casing numbers, Merc serial number would be something like 0M123456. If there it would be a plate just above the starter. Post a pic of the ECM so we know what vintage it is
  7. alldodge

    Mercruiser/Motorola versus Stand Alone ECM's

    Agree, need a serial number If its a MEFI then options are greater
  8. alldodge

    Fuel filter

    Spin on is better, but the wix filter replaces the original OEM
  9. alldodge

    Bell housing side play

    Looked up a drive and its showing .105 thickness Item 13 https://www.mercruiserparts.com/bam/subassembly/30854/1595/50
  10. alldodge

    HEI conversion issues 1987 Mercruiser 3.0

    There is something miswired or something is wrong the the Petronix. Don't like the Pet but when it does work there is no issues It melted the wire but didn't blow the 20 amp in line fuse under the helm, doesn't make sence
  11. alldodge

    Bell housing side play

    Don't know of any spec, it just should not have side play. Maybe @Bt Doctur will have a better answer
  12. alldodge

    Bravo 3X repair

    Note: the B3X, is a Bravo X upper and standard B3 lower. The X part is only the upper section. If your going to try and use it next season, clean it up and put some JB weld on it to help keep water out. Best to just replace it now
  13. alldodge

    Major hull damage , looking for tips

    Guess I should have said making measurements on the other side to make a mold on the damaged side
  14. alldodge

    I found one leak (there may be more)

    First, boat is in the water and your adding a patch on the inside, so while it may hold for a while it will not hold long. If a patch is put on the outside (Temp pool patch or other) to stop the water coming in, then maybe something can be done on the inside. As with any kind of adhesive, its...
  15. alldodge

    Major hull damage , looking for tips

    That is a tough one, is it worth fixing, or sell the parts and find another Back to your question: Could make a template from the other side, build a mold and lay glass on the inside. Some folks on OSO do this kind of stuff a lot and might get some ideas from them Like this one...
  16. alldodge

    Johnson 7.5 Kill switch troubleshooting

    Sounds like you have tracked the issue as far as it can. Was hoping with all the folks who has looked at the thread they might offer some insight I'm unable to find a Johnson diagram for your model but the Merc works the same, may just be different color wires. When the Magneto is grounded...
  17. alldodge

    Fuel filter

    Look for Wix 33094 Best route is change the thing out for a spin on canister filter
  18. alldodge

    Volvo to Mercruiser

    Going to need to measure but looks like it might work, The link below will show what the 3.0 is which should put up close https://www.mercurymarine.com/en/us/documents/installation-drawings/
  19. alldodge

    Johnson 7.5 Kill switch troubleshooting

    Yes, with key in the OFF position the black/yellow should show zero ohms to ground. If its not then check your key switch Key should have a black yellow on a terminal and a black on another terminal. When the key is OFF the switch should connect the blk/yel to blk terminals. The blk terminal...
  20. alldodge

    357 mag bravo 4v long block replacement

    Might just be a head gasket.
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