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  1. Scott06

    Quadrajet Replacement Options

    Would not expect fuel pressure to be in spec (4-7 psi) then be high after a carb rebuild- not my first instinct, only something to rule out. mist likely something with needle and seat or float. Did you replace the float sometimes the coated foam ones can get damaged when handling … ask my how...
  2. Scott06

    Quadrajet Replacement Options

    May not be where the float is set, but the needle and seat is not closing off fuel flow fuel bowl is overflowing Would take the top off and recheck that especially the gasket on the bottom of the seat whether that is fully sealed off Could also be too high fuel pressure
  3. Scott06

    Engine install checklist

    the trim sender goes to engine harness and the bullet connectors cant be reversed. The trim limit goes to the trim pump so really cant mix it up. I found the starter wires are a little easier if you lift the engine a foot or so but is really boat dependent. the ground wires go on the studs...
  4. Scott06

    what ignition system

    Hers a parts breakdown for your engine https://www.marineengine.com/parts/mercury_marine_parts/sn/OF765981 your original set up would have been a mercruiser thunderbolt V . This is a good system unless the ignition module die$… the delco est is a great system, OEM quality.will bolt in with...
  5. Scott06

    MerCruiser MCM 165 Trim Sender Wire

    you can if the wires are in good shape. On mine they were brittle and corroded through
  6. Scott06

    engine will not start

    T in a fuel pressure gauge. Merc makes a fitting which is kind of pricey to use once… or you can rig up compression fittings and a T
  7. Scott06

    2002 Mercruiser 3.0 - No Oil? Engine Swap?

    If it’s milk water jacked is cracked on inside as well so block is now about $7.50 with of scrap iron
  8. Scott06

    replace Mercruiser 2.5L 1989 with Mercruiser 3.0 1994

    would agree where does the still connected end go... being a pair like that my guess would be trim limit or sender. Sender ends up in the engine harness to get up to the gauge
  9. Scott06

    Mercruiser 120 poor starting

    compare spark gap test before and after setting with dwell meter. Dwell is what determines the amount of time the coil builds up spark energy prior to firing. this is a great video explaining how points work and a fantastic example of what a good spark looks like. The money shot is at 5:07...
  10. Scott06

    Mercruiser 4.3L - Stumbles at 3000RPM

    To the above would also take a look at the ignition components cap rotor wires and what do the plugs look like? I would also be leaning towards a carb cleaning - very similar symptoms to my neighbors 4.3 some times fine sometimes stumble- rebuilt the carb and good to go
  11. Scott06

    Stupid me, no oil

    Yes that rear seal was not leaking, you would have had a chit load of oil back there.
  12. Scott06

    What's behind this plug? 2001 4.3L

    If yours has a balance shaft could be that. Small plugs are for oil galleries
  13. Scott06

    What's behind this plug? 2001 4.3L

    camshaft galley is behind it.
  14. Scott06

    Alpha one paper gasket slppage

    that's fine pretty typical that I see that. not ideal but never caused me an issue. You may have some material on the inside
  15. Scott06

    Mercruiser 120 poor starting

    If you are talking about an IAC or idle air control valve there isn’t one on this carbed engine
  16. Scott06

    Mercruiser 120 poor starting

    True if points haven’t been cleaned and dwell set start there
  17. Scott06

    Mercruiser 120 poor starting

    Not sure which style yours has but you can disconnect the wires to it and see if you have spark . It grounds the coil to momentarily kill the spark so the dog clutch in outdrive can unload and pop out of gear good to rule out the switch isn’t killing it
  18. Scott06

    Mercruiser 120 poor starting

    Have you ruled out the shift interrupt switch as possible spark killer?
  19. Scott06

    Help me set up my new edelbrock 1409

    I've never hooked a vacuum gauge to my boat, car for sure) I do it mostly by ear. On my 5.0 w a 1409 I find it likes it about 1.75 turns out
  20. Scott06

    Over heat alarm

    Bravoitis where it comes through the transom? Pretty common issue , pretty common solution
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