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  1. Scott06

    New Carb and Low RPMs

    Is your throttle opening full is choke opening fully? Hopefully they guarantee their carbs. There could be several issues with the rebuild float level, eedle and seat power valve. the only adjustments u can do are idle speed, idle mixture, and choke. was this the same issue u had that lead you...
  2. Scott06

    Oil pressure

    I mean if a mechanical gauge matches what the electrical gauge in boat shows. This would confirm you have low oil pressure vs a bad gauge or sender. If the mechanical gauge reads higher the engine is mechanically ok. low oil pressure is from excessive bearing clearances and wear and or oil pump...
  3. Scott06

    Oil pressure

    as others have mentioned verify with a mechanical gauge. If oil pressure is accurate you can try 50 wt , otherwise engine needs teardown
  4. Scott06

    Thunderbolt 4

    The newer replacements are sealed. If its working leave it alone, but i do keep a spare in my toolbox on the boat
  5. Scott06

    3.0L alpha one nearly new runs unsmooth

    Does it immediately restart? Would try to verify if you have spark when it happens. Thinking maybe the man overboard switch, cannon plug on engine loose battery cable. Does helm have power when this happens
  6. Scott06

    3.0l Alpha 1 Gen 2 low speed overheat

    I would look in the system like the power steering cooler that this sand is not still clogging Something. I say this because if you use a OEM mercruiser or quicksilver impeller it should be lasting longer, unless it was sitting for years on the parts shelf. also if sand got in there there may...
  7. Scott06

    POINTS DISTRIBUTOR --- UNKNOWNS WITH MOTOR

    If you want to upgrade the ignition a delco est is the way to go. Thunderbolt systems work great but a lot of the modules are either insanely pricey or NLA.
  8. Scott06

    91 Reinell 191 vs 92 excel 185x

    if the boat was truly in great structural condition, best bet would be to get a rotten donor boat with a merc gen 2 or newer and swap pulleys to prop... but why? underneath it they are 30 year old boats. unless you are looking for a project. Not familiar with the volvo nomenclature- what engine...
  9. Scott06

    Gear Oil Pump Storage

    I just leave it in the top of a gear lube bottle. I keep this and a couple other lubes /grease gun in a 5 gal bucket with some paper towel in the bottom
  10. Scott06

    1989 Mercruiser 350 alpha one stalls when shifting

    put you serial number in here to get most accurate but the link should be to an 89 transom assy for an alpha https://www.marineengine.com/parts/mercruiser-sterndrive-parts/rmralpha-one-sterndrive-19831990/6225577-thru-0d469858/transom-plate-and-shift-cable
  11. Scott06

    1989 Mercruiser 350 alpha one stalls when shifting

    As others have said you need to replace both as they both wear. One thing that makes it easier is to pull the core out of the outer sheath. I push a weed wacker wire up it until it come out the top of the engine ( can use an old core with end cut off) . Tie the wire off on the top of the...
  12. Scott06

    help help help overheating Mecrusier

    If I had a dime for every time I said that at work trying to figure out a mechanical or process issue.... everyone tries to split the atom before checking the basics. The cool fuel looks like a MF to get at unless you like hanging upside down. At least now you know how the system works.
  13. Scott06

    First start after lower unit rebuild - new boat owner

    put it in the water and let it supply water off the pump by itself before you worry about it. Your home is not enough
  14. Scott06

    What causes this knocking tapping sound?

    Read up on pinion angles and driveshafts. If you are into hot roding and engine swaps exactly what bondo mentions is how these things are supposed to be set up
  15. Scott06

    help help help overheating Mecrusier

    Take the hose off the inlet to the power steering cooler I bet you will find debris on the outdrive side of the cooler. When you back flush to drive they get lifted off the face of the cooler which is a shell and tube heat exchanger. When you go forward it gets pushed against the face again...
  16. Scott06

    What causes this knocking tapping sound?

    they tend to make a rattling when at the upper lock. just drop it down a hair and see if it goes away. They are just getting out of the range of use and at too tight of an angle. Willing to bet if you tap it down a hair it goes away. if it doesn't take the drive off and examine the joints...
  17. Scott06

    First start after lower unit rebuild - new boat owner

    Looks completely normal nothing to worry about. good water flow yes lowering the outdrive is easier on u joints but at idle no issue in my opinion. For years my family has had a place in a shallow cove on a lake, water is shallow enough that outdrive has to be all the way up to get in the...
  18. Scott06

    95 4.3lx alpha one mercruiser cooling system question

    I believe Its in the outdrive manuals but would have to check to be sure which manual. I have a screen shot on my phone from last time this came up For sure it is quarts per 15 seconds so basically 3-4 gallons per minute Edit- I was wrong I got that screen shot from manual 24 which is the 5.0...
  19. Scott06

    95 4.3lx alpha one mercruiser cooling system question

    Per the merc manual the pump should output at the hose 3-4 qts in 15 seconds (lower flow at higher gear reduction drives)
  20. Scott06

    Testing transom assembly for leaks

    you will have to hook the trim pump harness up to the battery direct as it usually gets power from the battery cable on the starter lug, which is missing w/o the engine
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