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  1. Scott06

    Original prop size for 1976 starcraft chieftain mk Iv 25 foot with 165 merc

    This is the best advice here, best to prop it so you can hit the upper end of rpm spec. Not that you have run it that rpm, just will be a more lively boat if its pitched correctly. What ever you do don’t put the 19” back on it as it will put more strain on the engine lugging it.
  2. Scott06

    Engine Bogging Down When Cold

    Links dont work
  3. Scott06

    Engine Bogging Down When Cold

    Cap and rotor common failure points on mpi engines .
  4. Scott06

    Prop hitting anode

    You ground down the prop blade nit the annode? If so you picked the wrong one to grind, yes this will mess with balance.
  5. Scott06

    Swapping 88' 454 Truck Engine to Replace 93' Mercruiser 454

    Head gaskets and core plugs are likely different between a truck engine and a marine engine. Generally cam should be similar enough to marine if its the factory truck cam
  6. Scott06

    5.7 Vortec Runs Great On Land but Bogs Under Load in Water

    This is the Bible for edlbrock carbs https://www.edelbrock.com/pub/media/wysiwyg/documents/carb-owners-manual.pdf
  7. Scott06

    5.7 Vortec Runs Great On Land but Bogs Under Load in Water

    the piston that the step up rod is attached to , its what the vacuum pulls down and release to be lean or rich.
  8. Scott06

    5.7 Vortec Runs Great On Land but Bogs Under Load in Water

    Based on being rich would think the needle and seat/ float arent working or power piston is stuck in rich position. Dose it have the stock jets and step up rods in it? Would make sure vacum isnt low for some reason which would make it go rich all the time
  9. Scott06

    5.7 Vortec Runs Great On Land but Bogs Under Load in Water

    Agreed would check fuel supply and pressure then re rebuild carb
  10. Scott06

    5.7 Vortec Runs Great On Land but Bogs Under Load in Water

    yeah no idle adjustments make sense here. holley fuel pump comments scott makes are spot on though
  11. Scott06

    5.7 Vortec Runs Great On Land but Bogs Under Load in Water

    Describe in detail what happens when on the water does the rpm not go up or does it sputter when advancing the throttle. Does it die when you put it into gear? as discussed on land there is no load on engine so it doesnt need to make any power to rev to 3 k
  12. Scott06

    Mercury 3.0 EST no spark

    Is shift interrupt switch tripped?man over board tripped which wire is C/+ ? one of the two between coil and distributor? http://marineengines4less.com/images/companies/1/EST%20Ignition%20Instructions%20-%20ME4L.pdf?1431462059320 can you id which one it is in the attached wiring digram ?
  13. Scott06

    Mc-1 upgrade....

    by out drive do you mean just the outdrive or do you want to upgrade the outdrive, gimbal housing and trim system as well? If just the outdrive the later R/MR/Alpha Gen one will bolt up to your bellhousing and is still very current in terms of spares availability even though the Alpha gen one...
  14. Scott06

    2007 glasstron185 GT

    Depends what the rest of the hose looks like. If it chaffed or other maybe but you need to eliminate the chaffing. If the hose has timed out and is degraded no. Best bet is to remove so you can fully inspect inside and out, if you do that replace it.
  15. Scott06

    Flushing Muffs

    Well the last time i did a side by side flusher test … i dont know i just know these work well Better than the cheap ones i had before
  16. Scott06

    Mercruser 4.3 not starting

    Need to narrow down if you have missing fuel or spark. Take coil wire off distributor and ground it near engine you should see a spark. if not need to get spark back dump some gas down the carb see if it starts for a bit.if so could be issue with fuelline anitsiphon valve or fuel filter in...
  17. Scott06

    Flushing Muffs

    These have served me well for about ten years may be more https://www.amazon.com/Moeller-Flushrite-Flusher-Universal-Rectangular/dp/B000MT95RI
  18. Scott06

    Priming fuel system for new engine first start.

    has the engine been run on a stand first? When i ran mine on a pallet i took the plugs out cranked it on starter until it showed oil pressure , by then it was primed fuel wise. Dump a little gas down the carb it will run long enough to prime the fuel system in the boat
  19. Scott06

    Mercruiser Alpha One Gen Two Bellows

    Did you get oem merc bellows if not try one https://www.marineengine.com/newparts/part_details.php?pnum=MER816431A+1 or get the whole oem transom kit . I just did mine fit perfectly including the exhaust bellows...
  20. Scott06

    1978 5.7l pre-alpha with alpha gen 1 drive over heating

    A blown head gasket between those two low cylinders i would expect air pressure to come into combustion chamber and out sparkplug holes if you back the rockers to close the valves. cracked block that pressure will end up in crank case. if over head you could also have cracked heads not just gasket
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