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    Trailer Bunk Bracket Mounting Questions

    Looking for some experienced feedback / advice regarding the placement of trailer bunk brackets. I have a 20’ inboard DD Ski Boat. The trailer is not specific to this boat but is designed for inboard ski boats. It does have 4 bunks – each 12’ long, carpet covered & treated 2”x 6”. Total, there’s...
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    Questions regarding Water Temp Sensor / Engine Temperature - 350 Magnum 1995

    thank you for the diagram Questions - if the recirculating pump is not functioning properly for whatever reason, is it possible the cold water from the sea water pump is now only cooling the exhaust risers and not enough water is being pushed through the block? Could cold water go directly to...
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    Questions regarding Water Temp Sensor / Engine Temperature - 350 Magnum 1995

    Update on my Water Temp Sensor / Engine Temperature issues.... In lieu of testing the T-Stat housing temp sender on a stove, I simply bought a new sender & gauge - both of these new Mercury Quicksilver OEM. These made no difference. I also pulled off the hose from sea water pump o/p side at...
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    Questions regarding Water Temp Sensor / Engine Temperature - 350 Magnum 1995

    also - the temp readings i took of the T-Stat housing were right at both sensors - "Measured T-Stat Housing near both temp sensors - 98F & 97F". I aimed the gun right at the sensors threads entering the housing.
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    Questions regarding Water Temp Sensor / Engine Temperature - 350 Magnum 1995

    Thxs for the replies Serial number is 0F621724 - no it does not have the check valves. All hoses checked for blockages including the trans oil cooler. Found none. Also - FYI - last week started boat on driveway with a "fake a lake". Originally had some issues with this & the garden hose but...
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    Questions regarding Water Temp Sensor / Engine Temperature - 350 Magnum 1995

    Hello I have been dealing with an Engine Temperature issue now for a second season. Have posted here before and had great feedback. Brief history, sorry for long post - Purchased a used 1995 Direct Drive ski boat in fall of 2022. It has the 350 Magnum Tournament Ski Engine - Carburetor...
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    Sea Water Pump Cover - Question

    Update as of 5pm today - checked all hoses and T-stat housing for blockages - found none. Figured I would try the fake a lake start-up one more time. This time paid more attention to position of the fake a lake garden hose inlet with the water pick-up. Success. Boat is pumping water fine...
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    Sea Water Pump Cover - Question

    Hi Alldodge - actually with my pump, the two hose fittings are orientated horizontally. So my inlet hose from the water pick-up is on the starboard side. This was labelled as RH out. My engine is 350 Magnum, regular LH rotation. I actually did switch these around and obviously had no affect...
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    Sea Water Pump Cover - Question

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    Sea Water Pump Cover - Question

    Update & requesting some feedback - sorry for long narrative below.... I did source from Mercury the o-ring that goes under the plastic impeller housing. I removed cover and installed new o-ring. As I indicated in early posts, the impeller is perfect, wear plate looks good. Figured a new...
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    Sea Water Pump Cover - Question

    Thanks for the feedback Scott06 & bbook83. I have inspected the housing for cracks - its good. Also last season I thoroughly inspected all hose connections & trans oil cooler. Everything was tight & dry. The water I saw dripping was definitely at the bottom of the pump cover - leaking...
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    Sea Water Pump Cover - Question

    Hello IBoats Members Question regarding the Sea Water Pump Cover on my 350 Mag Ski 1995 engine. I'm trying to source a new O-Ring seal for the cover. Is this available either through Mercury Quicksilver or Sierra Marine? What is the part number? I noticed last season a slight water leak from...
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    Typical Engine Temps 350 Magnum

    Update on my Engine Temps I purchased a Sierra 160F thermostat c/w gaskets. Wanted to replace the thermostat and see if this resulted in different / cooler temps shown on my gauge. When I removed the T-stat housing from the intake manifold, I was not able to pull out the brass sleeve holding...
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    Typical Engine Temps 350 Magnum

    Thanks for the feedback guys.
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    Typical Engine Temps 350 Magnum

    Thanks for feedback - strictly a fresh water boat.
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    Typical Engine Temps 350 Magnum

    Looking for feedback from Mercruiser owners regarding typical engine temperatures I should be seeing. Last fall I purchased a used direct drive ski boat. It has the carb'd Merc 350 Magnum Tournament Ski engine, 1995. Temperature gauge was not working last year. Test drove the boat last fall...
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    350 Magnum - exhaust riser damaged brass plug

    Thanks guys New update - I did some surfing around and found a merc manual - looked like 27lbs. Torqued them down and re-started engine with the "fake a lake". No leaks anywhere. Idled engine for about 15 mins on driveway, temp gauge climbed to 160F and stayed there entire time. Before...
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    350 Magnum - exhaust riser damaged brass plug

    Update Before pulling the spark plugs and checking for water in the combustion chambers, I want to get the leaking to stop. I just sealed that new brass plug in the riser with permatex - problem solved. But with a new riser gasket installed, I now have a leak at the back of the riser near...
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    350 Magnum - exhaust riser damaged brass plug

    Thanks Scott06 - after removing the spark plugs, how do I check for water? And if I do determine there's water in the combustion chamber - how do I remove it? Just additional info- I had the engine idling for approximately ten minutes, also shut off & restarted twice. During this idling and...
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    350 Magnum - exhaust riser damaged brass plug

    Hello iboats members Update on this issue with seized plug on the riser. I drilled out the old plug and re-tapped threads with a 1/4" NPT 18 tap. Installed new recessed allen key type plug so that is flushed with riser. Two issues 1. When using a "fake a lake" water feed and idling on the...
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