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  1. S

    Need help locating 4-6psi fuel pump for 4.3 w/ 4bbl carb

    I'm stumped! I cannot find a suitable replacement fuel pump with 4-6psi operating pressure! My OEM fuel pump (861155-2) is operating at 9-10psi. (I don't know if it's always been this high). Carb is flooding. Carb supplier says max of 6.5 psi. Edelbrock also states max of 6.5 psi for their...
  2. S

    a carburetor shouldn't spill fuel like this, right?

    I pulled it: 861155-2 2072 A
  3. S

    a carburetor shouldn't spill fuel like this, right?

    Were these all the same part number, just performing differently, or did you order a different pump for the 2nd/3rd orders? do you have a Carter part num for 4-5psi? thanks
  4. S

    a carburetor shouldn't spill fuel like this, right?

    My current pump is the original OEM pump 861155-3 It's possible that the pump is failing and it increased pressure from 4-6 to 9-10, but it's odd that the aftermarkets all seem to be rated at 9-10psi
  5. S

    a carburetor shouldn't spill fuel like this, right?

    Water separator, yes. I have not tested the AS valve but since the pump is flooding the carb, it doesn't seem to be restricting the flow.
  6. S

    a carburetor shouldn't spill fuel like this, right?

    It only leaks on the port side. it's a Edelbrock style but is a weber rebuild: Carter AFB-4.3L-Marine-Electric Remanufactured 4 Barrel 4.3L Marine Carburetor from National Carb. I'm going to add a regulator and test with fresh fuel before cracking it open or returning the carb.
  7. S

    a carburetor shouldn't spill fuel like this, right?

    I have a 861155A3 installed. I believe it is original.
  8. S

    a carburetor shouldn't spill fuel like this, right?

    that was caused by the angle and the glass jar. the fuel is consistently one color/layer, no sediment.
  9. S

    a carburetor shouldn't spill fuel like this, right?

    Now i'm really confused! I have an original mercruiser fuel pump. It's operating at 9-10 psi. The aftermarket versions list 9-10 psi operating range - and are $55. An original fuel pump is now $630. How is it that my original is operating at the same as aftermarket specs? I cannot find there...
  10. S

    a carburetor shouldn't spill fuel like this, right?

    Fuel pressure gauge was on order and just arrived. I connected it directly to the fuel pump output (in place of the fuel tube that connects to the carb, without a Tee. It reads over 9 when operating, and a little over 1 when disconnected. I don't know if it should zero out or if it's...
  11. S

    a carburetor shouldn't spill fuel like this, right?

    Come to think of it, I may have had the same issue. This is where the problem started. I will check the fuel pressure tomorrow. I just bought the carb, and don't want to break into it if it is not working - I'd rather return it. I did remove the inlet covers on top to expose the metering...
  12. S

    a carburetor shouldn't spill fuel like this, right?

    I bypassed the oil pressure switch and the fuel pump runs with the ignition on, before starting
  13. S

    a carburetor shouldn't spill fuel like this, right?

    Will a failed pump pump too much pressure?, or just not enough? Can I rule out a fuel pump issue? ;) thanks!
  14. S

    a carburetor shouldn't spill fuel like this, right?

    recently purchased and installed a Carter AFB-4.3L-Marine-Electric Remanufactured 4 Barrel 4.3L Marine Carburetor - Electric Choke. Same model, installed easy. I have been diagnosing fuel supply and bypassed the oil pressure sensor to test the fuel pump. This is what I'm seeing at the...
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    2000 mercruiser 4.3 alpha 1 gen 2

    I have a 1991 stingray 190lx with a 2001 reman 4.3 4bbl alpha one gen 2 I replaced the batwings 10 years ago. I also have a temp diff with starboard riser being hotter. It was explained to me as normal.
  16. S

    procedure to manually flush non-running 4.3 engine?

    thanks. I have replaced the exhaust manifold and elbows twice. I'm prepared to do it again. I always rinse well with salt-away to minimize the impact.
  17. S

    procedure to manually flush non-running 4.3 engine?

    :) It ran for 10 minutes on muffs, two days in a row. no problem.. when I hit the bay, this started.
  18. S

    4.3 no start: starter whines and spins freely

    I checked all the plug gaps, and set the idle speed screw (just touching cam) and idle mixture screws (1 1/4 turn out). I cannot check the idle timing if it's not running, however it was running previously and no adjustments were made. It started right up on the first try, ran for 15...
  19. S

    procedure to manually flush non-running 4.3 engine?

    It started up in seawater for 30 seconds or so then stalled out. I couldn’t get it started for more than a few seconds when I got home to the muffs
  20. S

    procedure to manually flush non-running 4.3 engine?

    Is there a procedure to manually flush salt water out of the engine without a running engine? I really don't want salt water sitting in there until I can get it running! I know I can pull the blue plugs to drain, but can I remove the hoses from the thermostat housing and force fresh water...
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