Is seafoam good for outboards?

Safe & easy to use in all 2- & 4-stroke gasoline marine engines, inboard & outboard. Also great for all types of personal watercraft (PWC). When added to marine engine fuel, Marine PRO works to clean & lubricate your entire fuel system.

Does seafoam clean carb jets?

Use Sea Foam Spray to safely and effectively clean residues and deposits from intake valves, chambers and compression rings! Sea Foam Spray delivers a high concentration of petroleum cleaning solvency and lubricity to carburetor throttle valves, intake runners and valves, and chamber areas.

How to clean Mercury Marine carburetors?

How to Clean Mercury Marine Carburetors. 1 Step 1. Remove the large brass screw from the side of the fuel bowl on each carburetor bank with a flat screwdriver and drain the fuel from the 2 Step 2. 3 Step 3. 4 Step 4. 5 Step 5.

Are Mercury and Yamaha 90-hp 4-strokes with carburetors the same?

Thanks, Rick The anecdotal evidence is that there are no problems with the Yamaha 90-HP four-stroke motor with carburetors, but there are definite problems with the Mercury 90-HP with carburetors, even though the power head components are believed to be the same. This raises the question, “Are the carburetors the same?”

Are there any problems with carburetors in the Yamaha 90-hp?

The anecdotal evidence is that there are no problems with the Yamaha 90-HP four-stroke motor with carburetors, but there are definite problems with the Mercury 90-HP with carburetors, even though the power head components are believed to be the same.

Is the Mercury 90-hp EFI still a Yamaha powerhead?

Rick – the 90-HP EFI Mercury outboard motors are still Yamaha powerheads, and we already have plenty of the 2005 models running here in Guam. I personally run a 2004 115 EFI, but this engine and the 90-HP are very much the same, aside from mimimal differences in bore and stroke. I have a little over 300 hours on mine and no [problems] to date.