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  1. Lou C

    Fuel Filter?

    Agreed nothing beyond the standard spin on water separating filters. In fact on the Marine Quadrajet I have the normal filter that is in the inlet housing (for an auto application) is replaced by a low restriction screen. I think the Holley carbs have screens as well in the inlet. A normal 10...
  2. Lou C

    can someone tell me what motors are in a 1987 28' Chris-Craft 283 Amerosport 262 ?

    That I can’t say if they are Crusader engines you have to check their parts catalog. They might be a standard Jabsco or Johnson pump with the housing mounted to the crank pulley. Water in the gas? Make sure that the deck fill gasket is good and that there isn’t water pooling on top of the tank...
  3. Lou C

    Couple questions about winterization..

    I would (and do) fog a 4 stroke carbed engine it is humid here all year and the engine spring & fall may be covered in condensed moisture due to humidity and day/night temperature swings. But use fogging oil which is made for this purpose. I would follow what the manufacturer advises for any...
  4. Lou C

    1995 OMC 5.0L IO starting procedure? Stalls when going into gear

    Well you probably have 2 problems: Yes your thermostat might not be closing all the way, all it takes is a flake of rust or grain of sand. Common problem in raw water cooled engines. But even with a good stat these engines warm up slow and it should be able to run without stalling after like a...
  5. Lou C

    Couple questions about winterization..

    If you are back filling with AF: 1) you’ll need a lot even my little 4.3 takes 4.5 or so gallons 2) if you are in a cold region I would not use -50 or -60 I have used -100 or, if you can find it, Sierra PG antifreeze mixed up 50/50 with water. -50 or -60 get hard at a few degrees above zero but...
  6. Lou C

    Overheating and hydro locked

    My symptoms were rough running that cleared up as it warmed up from slightly sticking valves, water in a cyl and water in the oil. Combustion gas was getting into the cooling water esp as the engine is shut off. Then as it cools water would leak back into one cyl. But my comp test results were...
  7. Lou C

    140 or 160 thermostat. Does 20 degrees make a difference?

    I don’t think it will cause any harm in fact Mercruiser for many years specified a 140 stat even in fresh water. They moved to the 160 it seems when they transitioned to electronic fuel injection. In fresh water you can use either in salt water the 140 is advised because at temps above 160...
  8. Lou C

    Overheating and hydro locked

    Post up pics after you clean up the sealing surfaces . Not really a way to test the elbows but the acetone test (be careful highly flammable) is good for manifolds. You go by the sealing surfaces and how much flaking rust you see in the cooling passages. Sealing surfaces when cleaned up should...
  9. Lou C

    Tuning Holley 80551 (4160)

    I'm wondering if your vacuum secondaries are opening too soon.... see this:
  10. Lou C

    Overheating and hydro locked

    I’d do a comp test and check your exhaust
  11. Lou C

    Overheating and hydro locked

    It can run in from leaky exhaust after engine is shut off or from a bad head gasket same thing
  12. Lou C

    Minor Surging After Carb Rebuild - TKS 4.3 '06

    Does your boat have removable side panels next to the engine? Taking them out makes it an easy job. Sometimes because of the design of the exhaust manifolds you might have to use a thin wall spark plug socket.
  13. Lou C

    1995 OMC 5.0L IO starting procedure? Stalls when going into gear

    Go for 600 rpm even with the cone clutch drive you have, lower is better. And keep in mind those of us who learned to drive in the 60s and 70s are used to carbed engines and chokes. We were always tinkering with them to get them set up just right. My Quadrajet fires off quickly if the boat was...
  14. Lou C

    1995 OMC 5.0L water in bilge

    Are you hearing any noise from behind the engine, like a growling, or knocking when you turn or tilt the drive up? That's a sign of a leaky driveshaft bellows and corrosion damaged gimble bearing and u joints. As normal maintenance you should: have the drive pulled at the end of each season...
  15. Lou C

    Minor Surging After Carb Rebuild - TKS 4.3 '06

    Like I had on my ‘72 Chevrolet 5.7 Now the Rochester 4bbl Quadrajet, that’s a complex carb. I’ve had mine apart a few times….
  16. Lou C

    1995 OMC 5.0L IO starting procedure? Stalls when going into gear

    While it has an electric choke, a marine inboard carb does not have a fast idle cam like it would in an automotive appliction, so after starting and putting it in gear there is no fast idle. This means that for it to not stall it has to be in near perfect tune and carb adjustment. Make sure the...
  17. Lou C

    1995 OMC 5.0L water in bilge

    not normal unless it rained a lot and the cover leaks like they all do. When was the last time the drive was off and the bellows was checked for water?
  18. Lou C

    Minor Surging After Carb Rebuild - TKS 4.3 '06

    Sounds like the fuel mix in that range is too lean hence the surging
  19. Lou C

    Overheating and hydro locked

    Well if it blew head gaskets that can let water in but not as much as bad exhaust. Both are likely to let water in after the engine is shut off and cooling down. Not much if at all when the engine is running. I had some water in a cyl after blowing HGs but not enough to hydro lock. You can drain...
  20. Lou C

    Minor Surging After Carb Rebuild - TKS 4.3 '06

    The Merc TKS carb, is this just an update of the old Rochester 2bbl? If so nothing to be afraid of.
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