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That transom is no longer straight. That means there is rot going on

Yes. Just coat the threads with Permatex #3 (aviation)

All Holley carbs have externally adjustable float. Pull sight gauge, fuel should be at bottom of sight hole

Only take 2 oz of water to froth oil Did you drain the block and manifolds before pulling Anti Freeze in? If you didn't drain, you most likely have a cracked block Drain the water, pressure test. Should hold 15psi forever

Rain won't get into the motor unless the whole motor was underwater Is this a salt water boat? How was the boat winterized? Most Mercruisers after 2000 have a drain hose connected to the garboard plug.

It's never the coil

Find a 3.0 and Alpha 1 Gen 2 and drop in. Plenty in rotten Bayliners Will be less than rebuilding what you have, even paying customs, VAT, etc

What sized Holley? 4150 or 4160? Did you verify the idle transfer slots when you had the carb off If your fouling plugs, you are too rich Start at 3/4 turn out at mix screws. Make sure the float levels are set (external adjustment) When you had the carb apart, did you make sure the air...

Only one I know that is marine rated is DUI. Davis Unified Ignition

What is your fuel pressure?

Who's HEI setup?

Won't work, but it's your life. And you could never dry it out even if it sat in the desert for 10 years

I was taught the technique in the mid to late 70s lol. By the same hot rod shop owner that taught me to rebuild Holley carbs

Start by servicing the impeller

A 10243880 with a mechanical pump?

Take your current prop, and do a run, 3-5 miles at WOT, then come back the other way document your RPMs and your speeds. If you are getting 4600-4800 RPM, the 19 pitch prop is correct

Problem is when skiing, by the time the alarm goes off for depth, you are usually shining the prop.

I get better luck with an unlit propane torch by waving it over a carb If you add a bit of propane at idle and the speed increases, back the idle mix screws 1/8 turn. If you add propane and the idle drops, you are rich, and need to turn the screws in 1/8 turn

It's a 3.0 Check your idle speed and timing, and cooling system If your timing is advanced, or you are running hot, it will diesel (run-on) Let idle for a minute before keying off. That should prevent it from running on

I have had dead batteries that were charged backwards (sibling in charge of charging the battery) Hooked a 12 volt light up to the battery, let it drain down to zero, then charge it correctly I would be looking at the battery charger and wiring