Recent content by ShoalSurvivor

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    Alpha 1 Gen 2 - leak & transom service questions

    Drat! Water appears in bilge, days after test. I serviced the impeller, installed the drive, and filled with gear oil, with the intention of taking it back to the harbor for an in-water inspection with camera. Today, I found water in the bilge, presumably from my removed-drive, hose in...
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    Alpha 1 Gen 2 - leak & transom service questions

    I was on the right track... I could hear the water level about 1/3 of the way up the risers (I finished my test just minutes before you posted :) I am gonna scope it in the water next to look for exact source location, and then return to the YPipe/Transom teardown after that. thanks!
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    Alpha 1 Gen 2 - leak & transom service questions

    Results: Plugged small exhaust ports, ran hose into Y-Pipe. NO LEAKS YPipe bolts appear tight. Used a tap hammer to inspect the YPipe and transom and found no soft or hollow spots. Next step: reinstall drive, get boat-leak-o-scope and take it to the harbor.
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    Alpha 1 Gen 2 - leak & transom service questions

    Ok, plan for today: 1) hose in Ypipe to see if leak appears 2) if yes, then check for loose screws and see if tightening them resolves leak 3) also, inspect ypipe and transom for source and/or corrosion (leaking or not) 4) order inspection camera, drive gasket; transom service kit, sleeve, shift...
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    Alpha 1 Gen 2 - leak & transom service questions

    Thanks for your responses. When running with hose connected to intake, please verify that I should start it first, then turn on water (to avoid forcing water through the block) and turn off water before killing engine. Thanks
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    Alpha 1 Gen 2 - leak & transom service questions

    best I could tell, the drip was accumulating at the base of the y-pipe. I searched to see if it was above that point and running down but could not see or find any other source. i already pulled the drive for impeller service and figured I’d inspect the bellows while I was there, and thats when...
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    Alpha 1 Gen 2 - leak & transom service questions

    1999 Stingray 4.3 - owned since 2013. 216 hours on the meter. Original bellows (25years); shift cable & cable boot replaced in 2016; impeller serviced regularly; trim sensors have been disengaged and “bypassed” since 2005. Primarily used in salt-water, but well rinsed with Saltaway and dry...
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    Stalling, sudden low idle.

    Will do. Curious, though. Is there signal from the tach back to the engine, or is there an electrical change that the engine responds to?
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    Stalling, sudden low idle.

    I didn't remove the throttle cable when adjusting the idle. THAT explains a lot, and jives with my expectation. also, having it at idle, while in gear, is exactly what I had, and now have again. At higher rpm idle without removing the cable created the "lurching" - dangerous, and nerve-wracking...
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    Stalling, sudden low idle.

    Updates: 1) fuel pressure is still dead on at 6psi. 2) Plugs look clean: 3) No fuel leaking in carb. 4) fuel is clean 5) Ran her all weekend with no further issues. Before taking her off the water, I played with the carb idle adjustment. I found that at lower RPM (400 rpm, based on dash...
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    Stalling, sudden low idle.

    Thanks! I replaced the stock carb with an: Edelbrock 1409 Performer Series Marine 600 CFM Square Bore 4-Barrel Air Valve Secondary Electric Choke New Carburetor I replaced the fuel pump at that time, too, but struggled to find a compatible pressure. Pumps were over 10psi and the carbs req max...
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    Stalling, sudden low idle.

    some more detail: ran last night relatively well with the minor adjustment that I made to carb screw. i had a low throttle issue, but only high issue after I made an adjustment. I turned it back down 1/2 way after that And no more high issue. the big difference i noticed, and I hope this is...
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    Stalling, sudden low idle.

    Thanks for replying. 2004 4.3 mercruiser repower. I replaced the fuel filter and carb 2 years ago. Looks clean. Only issue I had with fuel was that mfg listed 12-15psi on fuel pump but carb was limited to 7psi. i could not find a lower psi pump, so I added a pressure regulator. Worked...
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    Stalling, sudden low idle.

    I turned that screw back down a little. It’s not lurching anymore but still idling at 420rpm. Is that the right idle adjustment for a 4bbl Weber carb? Is it possible that my tach is just not reading accurately?
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    Stalling, sudden low idle.

    I turned the screw until the tach raised. I thought “that was easy”. (Not sure I did the right thing). I don’t have a separate reach gauge to hook up. Now it’s idling at 850, bit when I put it in gear, it wants to lurch. Makes me think that’s not the idle, but something else. Thanks.
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