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    No spark on Merc 85hp

    The original floats were yellow foam. The alcohol in our fuel tends to dissolve them. Newer floats are hard plastic. They can crack and not function. Make sure the floats and float levers are good and set properly, respectively.
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    No spark on Merc 85hp

    Did you get the idle restrictor tube (idle jet) under the brass plug on the top of the carb? Did you clean the two or three the small holes drilled in the throat? Actually the '73 side bowl carbs also had a brass jet in the carb throat, if memory serves. The banjo filters under the caps on...
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    My turn with a old boat that has a sudden loss of ALL battery power in a 45 year old boat.

    Just so you know, battery cables can rot out under the insulation. They tend to bulge in that area. Also, I had a positive battery cable rot out overnight when it turned to blue/green paste. It was connected to the battery, was sitting in saltwater, and had a nick in the insulation. The...
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    No spark on Merc 85hp

    Well, if the carbs fill, but no fuel will go thru the jets, they are either clogged or do not have adequate air flow thru their throats. The latter would be unusual, if the carb base gaskets are good and the bolts are snug. If you remove the hex bolts at the base of the bowl, fuel should drip...
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    1979 40hp lower unit stuck

    I guess you could crack off the midsection. That would allow you to see into the spline area. You could try a blunt chistle on an air hammer on the crank and driveshaft and see if that can work the crank loose from the driveshaft. Alternate with heat and Penetrating oil?
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    Oil injection delete

    Gee, my primer bulbs work just fine, and they are aftermarket. One seems to have a piece of chore-boy inside it. but it still works, just hard to pump.
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    1979 40hp lower unit stuck

    Have you tried hanging the motor prop up and putting some penetrating oil into the spline area, after it cools from your torch? That tends to suck the oil into the part that is cooling. Some gearcases have the preload pin, most do not.
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    Have you ever seen this?

    That is your second cylinder firing and then not firing. The question is why? See what the spark plugs look like. It could be carburation, spark or possibly water in the cylinder. I never thought head gaskets needed a "Break-in" period. You might retorque the head bolts.
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    Fuel Dripping From The Carbs When It's Hot Out - 200HP Johnson 2001

    I think it incumbent for you to figure out the origin of the leak. Your motor has a vapor separator with a needle and float, six carbs with needles and floats, plus a vapor pump, OMS pump and other components like vacuum hoses and fuel lines. Any of them could be leaking.
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    Outdrive Paint & Prep

    Are you planning to use antifouling paint? Doesn't sound like it. If I didn't use A-F paint on my MerCruiser, it would have been all barnacles. Zinc chromate is the best for bare aluminum. Most antifouling paints for aluminum recommend a good barrier paint to protect the aluminum. V-P paint...
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    Oil injection delete

    Gee, Mark, those primer bulbs have two jobs. Pump fuel and get hard to show the carbs are full. Yours doesn't do at least one of those. I would recommend replacement......
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    Fuel Dripping From The Carbs When It's Hot Out - 200HP Johnson 2001

    Those plastic carbs have a bad habit of developing warped carb bowls which leak. You might look closely and see if it is the bowl-to-body surface that is leaking. Also, check the thermostats. If they stick or collect gunk, that helps the motor overheat, helping the warpage. You should...
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    3.0 liter carb problem

    Carb new in 2011? Now it is 13 years later. Pull, clean and rebuild the carb completely, I would recommend. Holley's are good carbs. A rebuild should fix you up. Change the fuel filters, if in doubt about their age.
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    Is this trailer repairable?

    Johnny, The issue that you identified can easily be repaired, however, if the trailer has more extensive rust, as experience shows us, the best plan is to replace it. Masonry supply and other places have thick and strong angle iron. That could be bolted or welded to fix that one area. That...
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    New canvas bow cover rolling at edges, solutions?

    If the top is new, I suspect it is not fitted properly. Depending on how you want your relationship with the canvass shop to evolve, you might ask them if they can fix it, or if all their products look this way. Some fabric edges on covers have a stiffener material inside the hem to help with...
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    No spark on Merc 85hp

    I don't understand "carbs won't spray".
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    Oil injection delete

    Gee, if you cannot feel the primer bulb (regardless of shape) get hard, you have other issues, IMO. Replace it with a primer bulb you can feel get hard.
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    Fuel coming out of the hose connected to the vapor pump 0433352

    If the motor runs on some fuel sprayed in the carbs, the carb idle passages/jets are likely clogged. Your motor has the idle passages and needle in the throttle body. There are covers on the sides of the throttle body, which can be removed exposing the idle mixture needle. I used some gumout...
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    1978 mercury outboard

    A 1978 Merc 115HP will have a battery powered CDI ignition with a single coil and distributor and 6 cylinders. I would recommend you verify this as years of motors get mixed up all the time. 1979 1/2 saw the changeover to 6 coil distributor less ADI ignition. Jumper the starter and take a...
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    How to choose an old 2-stroke 150/175 Merc

    Yes, I had a 360cc enduro dirt bike some years ago. She had real good power at all RPMs, but if you kept the RPMs near redline as you accelerated, the power was incredible. Of course, with the dinky electrical system she had, you would melt the battery and burn out all the lights at high RPM.
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