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    Part of oil injection pump is broken

    Find a good used pull on ebay for cheaper. That's what I did like 10+ years ago. Been working perfectly since.
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    WME carburetor gasket kit help needed.

    The second round gasket is not listed in my merc manual which is from 1989.
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    Gear oil for mercury 60hp

    That's what I use too!
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    2003 2 stroke 90 fuel pump replacement

    Is this the kit? https://www.crowleymarine.com/mercury/products/857005a1-fuel-pump-diaphragm-kit
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    2003 2 stroke 90 fuel pump replacement

    Sounds like you got something that is not OEM. Should have simply bought a gasket/diaphragm kit and rebuilt your original pump. Can't go wrong that way. It's the gaskets and diaphragm that goes bad not the metal housing.
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    Going crazy with this motor need help

    Have somebody drive while you squeeze the primer bulb when trying to accelerate. If that has an impact look closely at the fuel pump. You state you replaced the fuel pump. Normally people install a rebuild kit that's gaskets and diaphragms.
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    Carburetor's

    The idle timing spec is not that important. That's why it's given as a range. It's to only get you in the ball park. The actual timing spec is one that makes the motor idle at the proper RPM. My 1988 Mercury manual states the 90 hp should have the idle timing adjusted to make it idle 650-700...
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    1988 100hp mercury spark plugs

    Yes. There is a small filter on the accelerator pump output. It's on fuel line going from the pump to line that connects to the #3 and #4 cylinder check valves. But there should not be an issue with that filter. Not much can go wrong and the amount of fuel going through it is minimal. I'd...
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    1988 100hp mercury spark plugs

    The accelerator pump is completely different than the enrichner. Also this motor's accelerator pump is not a part of the carburetors. It's a separate diaphragm that is throttle linkage actuated and plumbed to the bottom two cylinders.
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    1988 100hp mercury spark plugs

    I would agree there should be no difference in holeshot but there was. The gapped ones just did not hit as hard. No doubt about it. Not sure why. Also, the enrichner sends gas to all four cylinders for starting on this motor.
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    1988 100hp mercury spark plugs

    The factory recommended spark plug for that motor is NGK BUHW which is a flat gapless style. At one point Mercury was recommending changing to a regular gapped automotive type plug. I tried them and found the engine did not have the same holeshot and went back to the BUHW's. Maybe the gapped...
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    45 and 47 PSI Mariner 9.9 HP

    That may be normal for that motor. The many smaller motors were designed with lower compression to make them easy to pull start. That's about the same comp number as my old Johnson 3 hp. Even brand new they were only about 60 PSI
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    Mariner 45hp Carburetor Leaking after Total Rebuild....stumped!

    Ebay is your friend.
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    Mercury 650 70’s outboard

    Is that a freeze plug on the side of the block that's leaking?
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    Carburetor's

    The difference is likely just the nipples the fuel lines connect to.
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    can someone point me in the right direction?

    My 1988 100 hp has one. It's attached to port side bracket. The trim sensor will not stop the motor from trimming though. You may have a bad solenoid. Happened to mine.
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    Motor has no power under load

    The 2+2 does have an accelerator pump but it's not on the carbs. It's connected to the linkage and injects fuel directly into the intake ports on the side of the block. You can verify it's working by idling then take a flathead screwdriver and depress the accelerator pump. The bottom...
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    can someone point me in the right direction?

    May not be available new. Check ebay.
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    Motor has no power under load

    Sure it does. The carbs are the only difference.
  20. D

    Motor has no power under load

    Has 115 carbs.
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