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  1. C

    Water leaking by spark plugs

    Dry it off and apply some silicone caulk
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    1998 150 Acceleration Issue

    Check the wiring. Maybe the jiggles cause it to lose a cylinder's spark.
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    Alarm on 225 Optimax 2cycle oil reservoir under cowl

    With the cap loose on the engine mounted tank, engine running, it should fill and overflow. So it sounds like the pressure line to the remote oil tank is leaking or the check valve is bad.
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    2016 mercury 60 hp efi,are all t stats tested in hot to boiling water?

    Outboard t-stats open at 140*F or thereabouts. Sounds like yours is bad. The other candidate is a waterpump rebuild. It would not be unusual if you picked up sand to chew up the impeller.
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    Mercury 150 optimax 2010

    Gee, what alarm? How many beeps? That motor has three fuel pumps on it, 2 electric and one mechanical lit-type pump. I presume you rebuilt the mechanical pump? Was there water in the water separator on the motor?
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    Mercury 850

    The baffle is under the outer water jacket cover, on the starboard side of the motor. The inner water jacket cover is under the baffle. It is pretty obvious, as it has many bolts. Those bolts are epoxied into the block. You probably should use some heat to break the epoxy bond.
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    Need help!!!! 4.3 mercruiser just clicking

    I have had the starter solenoids hang up in their tube. If you bought a rebuilt starter, that is a possibility. It shouldn't happen on a new starter though.
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    Mercury 850

    The drain hose is on the telltale fitting on the head, right? Those motors usually leak at the water jacket cover on the cylinder head, around the spark plugs. If you dry the area of leaking off and apply some silicone caulk it should stop leaking. The motor does not have a removeable...
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    Wondering about the need for "variable" oil mix.

    Newer oil injection systems do not very the oil ratio. My '98 Johnny runs about 60::1 all the time. The advantage is that I get exactly 60::1 and freshly mixed fuel. A lot of people will tell you to deep six the Autoblend. I have no experience with it, so I have no opinion. Outboards can...
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    VRO Pump Failure

    Tony, those OMS pumps will add more oil to the gasoline, if there is an air leak in the gasoline line. Check the main strainers gasket and Orings for air leaks. Ditto on all fuel line to fitting connections.
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    Need help!!!! 4.3 mercruiser just clicking

    Those 4.3 motors have a ground cable on the back of the block. Hard to see if it is clean. If you haven't checked that, it is worthwhile.
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    Won't go over 4,000 RPM

    You should repost this in the MerCruiser forum. Those guys are experts and can tell you if it is the coupler or something else.
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    Mercury 850

    That engine doesn't have an exhaust manifold. It has an outer water jacket cover on the port side. Under that is a baffle and under that is the inner water jacket cover. The exhaust covers can be removed, without pulling the powerhead, but it is very hard to do it that way, and if you break a...
  14. C

    Correct spark part size

    The other choice is to cross them to a plug that is available locally. Do they cross to AC, Champion or Autolite?
  15. C

    Blown stern drive

    SEI makes replacement Alpha I drives. They are much cheaper than OEM, and may rival used prices.
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    Need help!!!! 4.3 mercruiser just clicking

    There might be a red circuit breaker button on the engine, where the wiring plugs in. However, if you jumpered the slave solenoid and got nothing, I doubt that is the issue. Have you tried to turn the motor with a wrench? They can get hydrolocked.
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    Lower unit will not go all the way in

    Nuts, keep the motor and control in neutral. Does your motor have that plastic insert over the shift rod? If so, install it in the midsection to hold the upper shift rod in place and centered. Alternatively, Use some needle nose pliers to grab the shift rod above the midsection and align it...
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    Hope outboard ain't too heavt

    Your IL6 plus outdrive weighed 650#. A lot of that is the outdrive which is at the stern of the boat. I expect the boat to float much higher with the OB.
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    Mercury 850

    A distributor ignition model derives spark from battery voltage. The stator only serves to charge the battery. So missing spark is not the stator's fault. At this age, a lot of the spark plug wires are bad and arc to ground. They are solid stainless steel wire cored, and should have zero...
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    Near new old 1996 Mercury 115

    Like any motor, if you buy the service manual, and read it, you will understand what repairs you can do with no diagnostic equipment, which you can do with reasonable-priced diagnostic equipment and those which require expensive diagnostic equipment. Optimax motors require dual pressure gauges...
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