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    4.3 efi tbi throttle question

    Check timing. is It possible the knock sensor is pulling timing?
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    Merc 377 MAG DTS AXIUS electrical issue

    Two things to check. first, your gauge might be bad. Check with a voltmeter. Second, you may have a bad ground somewhere. what you can do is trace back all the grounds and see if something is loose. check the actual batteries first. make sure the ground connection is clean. Use the...
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    Bellows, cables, and upper steering pin job Bravo 3

    I have a busy spring ahead of me. 1996 Donzi LXC 3250 twin 5.7 B3. I'm planning on replacing the bellows and lower shift cable on my boat this spring. I received the new 8M0095485 kits from quicksilver. As a side note. I'm also replacing both upper steering pins with Hill marine...
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    Hull damage while lifting? Donzi

    I'm going to go back to the boat tomoro evening. Ill bring my moisture meter. Is there anything you guys want me to check to rule anything out? The pictures I took, may not show it, but the crack is only on the strake, not the hull itself. Would this still be stringer related? or could it...
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    Hull damage while lifting? Donzi

    I had the boat lifted by the marina in a covered slip. The damage looks fresh to me. The damage is right where the sling was placed. it is on the strake. the boat is a 1996 Donzi 3250 LXC. i have a couple questions. First does anyone know the lift points, as this Boat did come with a...
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    Holding tank issue. Waste sensor problem.

    Update: and this is a good one. The problem was still there. It was not vent related. Solution: When under vaccum the tank collapses a bit. the sensor is threaded into the center top(weakest part) of the tank. The tank is 11" tall. The sensor is 10" tall. When under vacuum...
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    1996 5.7LX EFI TBI Timing procedure

    Need to know the correct timing procedure for my engines. serial number 0F795028 1996 5.7LX EFI TBI with factory Delco distributor. I have The rinda scan tool. I’m getting mixed information in my searches. Specifically regarding the rpm during the timing procedure. Some say...
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    Holding tank issue. Waste sensor problem.

    Threads look good. I think I fixed it. Won’t know till I get the bit back to the pump out station. When I checked the vent hose I disconnected from tank and it was clear. However I never checked the vent elbow on the actual tank, Tonight I unscrewed it, and heard vacuum, looked...
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    Holding tank issue. Waste sensor problem.

    I have a threaded fireboy/xintex tank level sensor in my poly waste tank. after getting a bad smell from the boat, I narrowed it down to a loose sensor, it was unthreaded and the oring was cut. I replaced the oring, and tightened it down. Two weeks later same thing. Popped out again...
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    2006 Monterey Boat with a 4.3L Mercruiser TKS Engine S/N 0w354897 Mysterious Loss of Power

    When the oil switch detects low/no oil pressure. it cuts power to the electric fuel pump. It is not gradual. You mention that the engine is carburated. so it will not be guardian/limp mode. If your fuel pump is electric. it could be getting tired. I would recommend installing a fuel...
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    Mercruiser 350MAG MPI 5.7L with Bravo 1 cutting off when put in gear

    at this point, it only stalls when put in drive? is the drive seizing up? it can run all day at any rpm in the water. but as soon as you put in forward or reverse. it stalls out? I would check the drive.
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    Battery isolater , 2 alternators

    I would install two isolators. one for each engine. and connect both to the house bank. that way, either engine will recharge the house bank. and the engines stay isolated from each other.
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    Mercruiser 350MAG MPI 5.7L with Bravo 1 cutting off when put in gear

    have you checked fuel quality? If it runs good on muffs. and not in the water... check your fuel filter for water. perhaps the angle of the boat when floating is allowing water to be sucked into the fuel pickup. and not when on the trailer. how long was the boat sitting without being used?
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    Battery Isolator question:

    UPDATE: I ended up installing two new Victron Isolators. One for each engine. Starboard engine isolator --> Starboard engine, generator and house bank Port engine isolator --> Port engine, house bank All is well. everything works perfectly now.
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    Max of 3200 rpm at wot with Sierra 18-5514 Conversion Kit

    probably bad est. or timing was changed.
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    leaky steering upper seal/swivel pin

    1996 donzi 3250 LXC. twin mercruiser 5.7 LX EFI bravo 3 I noticed some water coming in the boat lately. A very slow leak. It turns out its the upper steering seal. the area near the steering arm is wet. worse while trolling when the rear of the boat is more submerged. I plan on...
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    Battery Isolator question:

    New to me boat, has 2 mercruiser 5.7s and 4 battery banks. starter bat 1 starter bat 2 generator bat house bank (2 6 volt bats making 12v) currently the boat has a 2 alt to 3 bank isolator for the alternator charging system. When the engine is running the house bank is not charging. It is...
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    Bimini ball socket mount stripped

    I had the same problem. stripped out screw hole in the window frame for the bimini fitting. I used liquid metal/ JB weld and screwed it in. Let it sit overnight. It's been solid all last season!!
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    Prop advice needed

    That would be insane in my boat. :)
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    Prop advice needed

    So just so I understand. I should just keep the 17p 3 blade stainless. BUT if I want a lower cruising/planing speed, i could buy a 4 blade prop. Do I buy a 17P 4 blade, or drop it down to 16? I see lots of 14.5 x18 4 blades available, but it probably wont work well with my boat.
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