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Gee, if the jets are clogged, it is not the lack of a dressing on the gaskets and orings. What shape are your fuel filters? On a related note: My B-I-L left the gasoline shutoff in the on position on his pressure washer, with a gravity feed fuel system. Over the winter all the fuel went into...

Do you have the PTT with the trim pump and reservoir in the boat? If so, you can have one or two solenoids. The UP circuit will definitely have a solenoid, but the DOWN circuit may or may not have one. I never had a solenoid go bad on that type of system, so first check the connections from...

Gee, I don't do any of that. I leave the fuel line connected to the engine all winter. It is a V6 with 6 carbs, so it would be hard to drain and running it dry would be bad. My carbs are clean.....who knew?

Ethanol, despite what the old wives tales say, is not bad for your fuel system. It will clean the fuel system upon first use, and that can be an issue, but once you have used it, it absorbs water in the fuel and keeps all the components clean. Modern engines use alcohol-resistant rubber...

I never heard of VST warpage. The carb bowls do warp and need to be replaced. If you power the electric fuel pump from the starter solenoid for cranking and via a relay from the voltage regulator for running, with appropriate diodes, it can be made safe. I really think you have solved a...

Gee, the VST solves the vapor lock issue and bubbles issue. In addition, the VST is simply a tank with a fuel inlet needle, just like a carb. I have never had an issue with the one on my '98. I never priced a new inlet needle and gasket for the VST, but I expect it to be cheap and available...

First of all, you do not have a fuel rail. Those supply fuel to injectors, not carbs. Secondarily, there is no reason to return fuel to the tank, unless your fuel pressure will override the carb inlet needle. Thirdly, the components you replaced last decades w/o replacement. I have a 1998...

Gee, it is pretty easy to tell if a prop is cupped. Put a straight edge in the prop blade. If it sits flat on the whole blade, there is no cup. The cup will usually be at the trailing edge of the prop blade. As for raising the RPM to 6000, I think you are changing happy to glad. I do not...

Gee, most props are cupped. Is your 14P prop cupped? if so, changing the pitch to 13P cupped prop should give you the 200RPM you want. Why are you set on 6K RPM? Your current prop would seem to be in the max RPM range already. You can likely get a 12P, which would, in theory, raise your...

Whereas Yamaha has several anodes in the engine, I never saw the same in a Merc. Mercs have their anodes on the transom bracket and gearcase. Of course, Yammies have a habit of their cylinder heads rotting out, so that may be the reason for all the anodes. The other good news is that most...

Bare metal is best, however, it will oxidize some before you can apply the epoxy. Use a fine sanding or dremel tool to clean it up. Wipe with acetone and then immediately mix and apply the marine-Tex. Some years ago, I did this repair on the inner water jacket cover of a Merc 4 cylinder OB...

Gee, a lot of folks likely do the upgrade like you. Can you get a new wiring harness for your motor with the electric fuel pump wiring?

OK, so it sounds like no water is getting into the combustion area. That does not mean that compression is not getting into the cooling passages, causing the overheat. Do your head gaskets have orings as well.

They have remote starter cables for Mercs and other motors. Mechanics use them on motors mounted on stands. You might look for them. The other choice is to make one. Find a short engine cable extension and a keyswitch and wire it up.

You can epoxy the pitted areas. If you clean the metal, wipe it with acetone and use Marine-Tex to fill the pits, it will add some time to the block.

Gee, smell the stuff. If it is gear oil, it will stink from the sulfur in it. If it is 2 cycle oil, it will smell like gas or oil.

White gelcoat usually holds up well. The darker colors are the ones that get chalky. Also, gelcoat doesn't have a clear coat over it. Maybe it is paint?

OK, let me ask a dumber question. If his motor does not have the machining for a mechanical fuel pump, why does it not have the wiring for an electric fuel pump?

A lot of times clean comes from water leaks steam cleaning the parts. i.e if one spark plug is real clean and the others are tan/brown, the clean spark plug may be getting water into the cylinder.

Let me ask a dumb question. Why do you need an electric fuel pump? They were used on late model carbs and fuel injection. They were needed on FI, but not essential on carb motors.