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  1. Lou C

    Help Diagnosing carb vs ignition problem, 5.7 mercruiser

    So it was all the anti siphon valve eh? Sometimes it’s really just the simple things!
  2. Lou C

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

    Is 262 the cubic inch displacement? If so they could be GM 4.3 V6s. Engine parts are GM but the add ons are from whoever marinized the engines. Older Chris Craft engines were blue like Crusaders I think...
  3. Lou C

    Edelbrock 1409 hard start, flooding

    Agreed with the engine off it really can’t be the pump.
  4. Lou C

    Edelbrock 1409 hard start, flooding

    Well it might be a good idea to check the pressure on that pump; although there is still a chance that you have an intermittent float sticking issue.
  5. Lou C

    Edelbrock 1409 hard start, flooding

    Also: If it floods that bad with the engine off are you sure that the oil pressure safety switch & wiring are functioning correctly? An electric pump MUST SHUT OFF as soon as the ignition is turned off! The electric pump must be wired correctly to an on/off oil pressure safety switch so if the...
  6. Lou C

    Edelbrock 1409 hard start, flooding

    That would suggest that the needle valves are holding. I’d try it several times to see if they hang up. If not I’d measure fuel pressure to make sure it’s not higher than specs. It’s possible for a fuel pump to deliver too much pressure in a carb application. Check what Edelbrock says but I...
  7. Lou C

    Edelbrock 1409 hard start, flooding

    Something about the floats contacting the side of the fuel bowl. Might have to check clearances carefully. All carbs have their quirks. Right now I’ve learned most of the Quadrajet ones but when they are clean and properly set up they are really good. We owned a ‘75 Olds with a 350 and a QJet...
  8. Lou C

    Preignition knock under a load 2000 Thunderbolt 5

    What do your spark plugs look like? Light tan or grey or blistered white? If the latter that’s a clear indication of a lean condition
  9. Lou C

    Outdrive does not want to re -install in boat

    I think the keys to doing this job: Drive jack to get the drive at the right height Proper alignment and lining up gimble bearing with the tool as mentioned A means of turning the driveshaft just enough to make the splines line up. You’re talking like maybe 1/8–1/16” here... That’s whats...
  10. Lou C

    Edelbrock 1409 hard start, flooding

    I never had an Edelbrock but I heard that the floats can hang up. On my Quadrajet both times I had that problem it was the needle valve. Easy fix once you got the air horn off. I also had flooding similar with a Holley due to a piece of rubber from those fuel transfer tube o rings holding the...
  11. Lou C

    Edelbrock 1409 hard start, flooding

    Agreed in the second vid is the engine off? It’s REALLY flooding prob a piece of grit between the needle valve & the seat. A possible quick fix is to remove the carb and drain out all the gas & let it dry out to be safe. Then with the carb level blast a bit of compressed air thru the fuel inlet...
  12. Lou C

    restoration of 1991 VIP and engine upgrade inc conversion from spitfire ignition

    You need a decent digital volt ohmmeter and the specs for the Delco EST system, it shouldn’t be hard to find because Volvo Penta used that same system for years. I don’t know off had because my OMC still has the original points system which works fine if you know how to maintain them.
  13. Lou C

    Impeller housing overheating

    Starter terminals, battery terminals and battery cables. All must be free of corrosion clean & tight. Sounds like resistance at the terminals/corroded cables. Any bad wiring or terminals in the starting system can cause this....
  14. Lou C

    OMC 4.3 Idles great won’t accelerate

    You want to make sure that the ESA is not on all the time. Try temporarily unplugging the ESA switches and see if it will rev properly
  15. Lou C

    restoration of 1991 VIP and engine upgrade inc conversion from spitfire ignition

    Well you can simply measure the primary & secondary resistance of the coil against specs. Do it after running the engine as long as it can so it is hot you want to see if it breaks down when hot. The “engineers” need to go back to “school” if they think a simple marine charging system charges...
  16. Lou C

    Access to Exhaust flapper 2.3 OMC?

    That's about the only way, you might need to take a coat hanger and bend it into a hook shape to grab it and pull it out. I had to do this once when I had an overheat. Here's the one that didn't fall down the Y pipe, the other one was in the bottom of the exhaust passage. I also found one stuck...
  17. Lou C

    Volvo Penta 3.0 I/O Overheating. Brand New Engine!

    Well here's the thing, on the OMC/Volvo style thermostat housing, the exhaust manifold(s) always gets water from the impeller whether the engine thermostat is open or not. So if both the exhaust and the engine are overheating as you have, it is likely that the impeller is not pumping water or...
  18. Lou C

    OMC 4.3 Idles great won’t accelerate

    Yep could be that, but also on our own Four Winns, we had a rusty anti siphon valve, that did the same thing, it would start and rev in neutral just fine but would not plane out the boat. Our mechanic replaced it back in 2004 and its been fine ever since. Spring loaded valve that shuts off fuel...
  19. Lou C

    restoration of 1991 VIP and engine upgrade inc conversion from spitfire ignition

    PS: on older OMCs there are a few quirks in the wiring system, one is that the sense circuit (this senses actual battery voltage so the voltage regulator can adjust accordingly) can develop high resistance which causes the alternator to over charge the battery, this is solved by disconnecting...
  20. Lou C

    restoration of 1991 VIP and engine upgrade inc conversion from spitfire ignition

    Electric choke, which needs constant 12v to open, if connected to the ignition coil can cause that. In fact the instructions for Holley and Edelbrock carbs tell you not to wire it that way. The electric choke should be connected to the AC tap terminal on the alternator, depending on which...
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