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  1. 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.
  2. 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...
  3. 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...
  4. 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...
  5. 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
  6. 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!
  7. 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...
  8. S

    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.
  9. 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.
  10. 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.
  11. 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...
  12. 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
  13. 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...
  14. S

    4.3 no start: starter whines and spins freely

    I have a Thunderbolt V ignition.
  15. S

    4.3 no start: starter whines and spins freely

    I have not confirmed sparks, but it did start and run. Would that be possible without good sparks? Also, I had a storage water/bilge issue with lots of corrosion. I replaced carb, starter, plugs, wires, cap, rotor, coil. Maybe fuel pump?
  16. S

    4.3 no start: starter whines and spins freely

    Replaced the starter. Engined fired up almost immediately, ran for about 20-30 seconds, then sputtered out. I had backed off the throttle after it started to about 1k rpm, but that was not at idle. I was unable to goose it back up. I was also unable to restart it. I tried first without...
  17. S

    4.3 no start: starter whines and spins freely

    New starter on the way. Does this flywheel look "normal", or is this indicating greater issues? FWIW, the engine fired up and ran. thanks.
  18. S

    4.3 no start: starter whines and spins freely

    I read: if the starter motor spins but fails to crank the engine, the causes wad corroded or gummy Bendix drive. so, I pulled the starter: Despite the appearance, the plunger does move up and down, though I cannot say if it's "free". Seems like an obvious candidate for replacement. I've got...
  19. S

    4.3 no start: starter whines and spins freely

    Hi All, After engine started fine, then stalled, then restarted, then stalled... my starter started to make this whine with no apparent engagement of the engine. Is this a broken starter or the connection to the flywheel? Also, is there a procedure for flushing saltwater out of a non running...
  20. S

    spring vapor lock?

    It's not working fine, and I don't know if I should start a new thread ??? My new reman carb fired up great yesterday, ran 10 min. low idle at first, but then fine after warming up (it's been that way for a long time). Today, I tested it again. fired up, but the idle was lower (350ish), and...
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