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    1988 Merc 200hp acting squirrelly

    Got a 1988 200hp Merc V6 2.4, today when I went for a ride it kind of hesitated when I was accelerating through the mid range, when I decelerated it slowed down then sped up, It repeated this behavior when I tried it again. It goes full speed fine and starts right up.
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    Seafoam vs. Marine Pro Seafoam

    Anybody know what the main difference is between regular seafoam and marine pro? Is it worth paying the extra $$$ for it?
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    1975 Johnson 25hp weak spark

    Got a 1975 Johnson 25hp with weak spark in the bottom cylinder. Does that usually mean a coil issue or a points issue?
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    converting a long shaft 1982 7.5hp Evinrude to a short shaft question

    got a 1982 Evinrude E8RLCNR that is a long shaft and would like to convert it to a short shaft. I had a short shaft gearcase from another motor and the mid section also. How do you remove the water tube?
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    1986 Ranger 373v specs

    Anybody familiar with a 1986 Ranger 373v? I would like to find out how long it is, how much it weighs and what the max hp rating is. thanks
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    Overrated Horsepower?

    I have read that most outboards produced in the 70's and early 80's were sold with higher horsepower numbers than they actually produced( i.e. the Merc 50 was actually 45hp, the 80 only 75hp), was this true with the Merc V6's also? I've found a good running 1980 Merc 175 and was curious if it...
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    Mercury V6 Head part numbers

    Hey guys, I found two sets of mercury v6 heads, the two piece style from the 70's / 80's. Can anyone tell what HP they were used on? The number on one set is 96422, the other is 96531. I can't find a website that shows NLA part numbers, if anyone knows a good site please please post a link. Thanks
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    Is switching to Aftermarket reeds worth it?

    I have a 1988 Mercury 200hp carb V6, she idles a little rough and I currently have her on a Hydrostream ski boat. It was suggested to me to try high performance reeds, that the back in the day all these Merc guys were putting in Boyesen reeds for better performance... anyone here have any...
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    Yet another V6 Merc question: voltage regulator?

    This Franken Merc I have doesn’t have a voltage regulator on it. The best I can tell it’s a mid eighties xr2 block and whoever rebuilt it put all new aftermarket electronics on, stator, switch boxes, rectifier…but no voltage regulator. I’ve been running it for a few weeks now with no...
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    XR2 Spark plug question

    Looking to get a new set of plugs for my 1987 150 xr2, the guide shows two options: NGK BUHW or NGK BU8H... any opinions on which is better or what the differences between the two are???
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    1987 Merc 200 V6 blowing fuse

    When I turn the key and the motor will turn over, turn key off, then turn on again and the fuse will be blown...
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    Need help identifying old Merc carb

    Off of an old V-6, part #1374-5427-c (or is that a casting number?) and WH. It also has 41-11468 stamped on it. Trying to see model/year/hp it's off of, thanks.
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    Fuel dripping from carbs...

    Picked up a very used rebuilt Merc 150 xr2, at idle it drips fuel from the carbs, especially the middle one. When I squeeze the primer bulb the carbs fill and don't overflow, It happens while it's running. Compression is 112-115 on all six.
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    1982 7.5 hp Johnson compression numbers?

    Guys, just picked up a 1982 7.5 Johnson 2-stroke. It starts and idles great. Trolls down soo slow its impressive, but it doesn't have have the full speed power it should. I did a compression test pulling the starter cord 5 times on each cylinder getting 90psi on top and 95psi on the bottom. Is...
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    Does this sound like a bad head gasket?

    I'm having issues with my 1994 Yamaha 130hp two stoke, Today I put in four brand new spark plugs and went for a ride, for about 5 seconds it ran at "full power" then dropped down to 4,000 rpms. Ran back to the dock and the #2 cylinder spark plug was black, the other three looked good. Does this...
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    Yamaha 130hp fouling plugs

    Got a 1994 Yamaha 130hp 2-stroke, it keeps fouling up the plugs... I checked the compression and it's 130,130,130, 127. Ran across the lake today wide open and stopped at the dock and checked the temp with a laser thermometer, the highest temp on the top of the block was 110 degrees. the water...
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    Can a 1984 Evinrude 6hp be upgraded to an 8hp?

    Does anyone know if a 6hp can be easily converted to a 8hp? I have a 1984 6hp E6RCRM.
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    1967 Johnson 9-1/2 idling issue

    my 1967 Johnson 9-1/2 starts and runs great except when I turn it down as slow as it will go, she will idle very slow for 30 seconds or so than speed up on its own for 10-15 seconds then slow back down again. Fuel pump? carb float? any ideas?
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    Spark plug crossover question

    I have a 1994 130hp Yamaha, the plugs that came in it were NGK BR9HS-10, the auto parts store didn't have them and told me Champion QL77JC4 came up as a equal replacement. Is this true? If not what over plug can be used?
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    Did leakdown test, will a new head gasket help?

    Ten years ago I got a used 1994 yamaha 130 2-stroke. I did a leakdown test today and the two cylinders on the left side tested good 5-6psi leakage, the two on the right are at 10psi. Would replacing the head gasket help?
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