Maintenance, Fiberglass & Epoxy Long term storage in pump. PFDs, Roof Racks, Carriers, Seawater shut off valve is either fully closed or partially closed. Problems occur when the grill slits or holes are covered with marine growth or too much bottom paint, as the flow to the water … All, Boat Bimini Maintenance, Pumps and Neither of those things are good. Accessories, Marine Electrical Everything is cast iron and can handle the heat without to much fuss. It is worth taking the drive apart and look at the water pump upper seal, shaft upper seal and shifter seal. ACCOUNT, Find Loose of faulty serpentine drive belt. Remedy: Replace impeller. Transom PAR Sep 2, 2007. Forum posts represent the experience, opinion, and view of individual users. Supplies, Boston Whaler, 1972-1993, Galley, Covers and Hardware, Marine Put the boat in the water and let it run. 4.3 MerCruiser Overheating (4.3L MPI Alpha and Bravo) 2001-2008. I would sure pull them off and inspect. If the overheat condition only exists when the boat is run at high speeds, the cause may be clogged exhaust manifolds or risers. Accessories, Marine DC Power Plugs Lights, Boat Trailer ... Realistically probably no damage. Maintenance, Boat Cleaners & They are designed to work on a wet exhaust system. Systems, Lowrance Hook2-4 GPS Motors, Fishing Downriggers & Hardware, Boat Cabin Cast iron pots and pans routinely get over 500F and they don't warp or crack. Sealant, & 220? Boat started smoking very bad and engine quit. Tubes, Shop Acessories, Fishing Outriggers & I have coolant dripping from the front of my engine. AN Dock, Cabin and Now, Shop ... complete kit w/housing.starving the raw water pump has more than likely killed it.next,change the engine oil. Cause: Normal use of impeller. This can quickly overheat the transmission, as the additional weight causes the transmission to have to work harder than normal. Caulking, Marine Engine Some inboard-outboard marine engines contain a closed loop cooling system that consists of a radiator, which uses anti-freeze (coolant) for the purpose of cooling the engine passages and wet exhaust manifold. Seats, Pontoon Boat Seats & Riptide Terrova 80 Trolling Motor w/i-Pilot & Bluetooth, Inflatable Handles, Life Jackets & Professionals. Covers, Other Refit impeller to rotate in opposite direction. Deals, Pumps & Plumbing Symptoms: Blades have some or severe permanent set. Troubleshooting 2. High Back Reclining Helm Seat, Cabin and You may have to replace your water pump impeller but i doubt that you did any major damage. On the assumption that the impeller was the root cause then that is easily and cheaply fixed. The hose will introduce air into the cooling system and cause false readings. The set of wires running to motor (in the plastic protecive slip shell) were melted to the pipe between the riser and y-pipe. Rails, Marine Tools & Tool Wells, Toilet & Waste ZaneR : 10 - 19-Apr-14 Original Post : 15-May-11 : Hi, My 2059 trophy is running the 120 mercruiser diesel and is running preaty hot..at 3800rpm its running at 230f on the gauge. Mercruiser 140 Overheating Engine. Deals, Camping & RV Page 42: Drive Unit Impact Protection Section 3 - On the Water Drive Unit Impact Protection The power trim hydraulic system is designed to provide impact protection for the sterndrive unit. Tops, Bimini Top Grills, Boat Drink Changed the impeller, thermostat ,exhaust boot and back flushed the cooling system and the problem still exists. Hitches, & Hardware, Boat Seat dogfish, Sep 2, 2007, in forum: Powerboats. Re: Did I damage my Mercruiser 5.7L after overheating? By JPW, July 12, 2013 in Boat Talk. MerCruiser 454 over heating cooling thermostat troubleshooting Couldn't be happier so far!! Accessories, Boat Lift Canopy Distribution, ProMariner ProNautic Locks, Boat Deck Fishing Lures, Fishing Rod Holders & Boat Repair, Boat Paint & Boat, Sell A Sockets, Marine Electrical Honda 5hp Outboard, Boat Boarding, Paddles & Switches, Shore Power & AC Holder, Anchor & Dock Systems, Marine Plumbing Forum posts represent the experience, opinion, and view of individual users. Discussion in 'Powerboats' started by mtn mike, Jun 19, 2007. A Rochester or a Mercarb? Any solutions will be welcomed. With either the outboard or inboard installation, after a severe overheat, the thermostat should be replaced as they are quite frequently damaged during an overheat event. ... complete kit w/housing.starving the raw water pump has more than likely killed it.next,change the engine oil. The engine may not overheat but the plugged elbow, exhaust manifold, and exhaust pipe could burn and be destroyed. Waxes, Boat Cleaning Parts, Wash Down Usually when you have a bad water pump impellar the engine will overheat at both low speed and high speed. While running at full speed, I noticed smoke from the engine compartment. Trolling Motors, Shop Trailer Winches, Shop Replace the serpentine belt with a new belt. mercruiser overheated what damage can be done? Replies: 4 Views: 4,238. Discussion in 'Powerboats' started by mtn mike, Jun 19, 2007. You must log in or register to reply here. Rafts, Paddle Meters, Marine Electrical Panels Bullet Skimmer, Paint and First thing we did was drop the leg and check the impeller found to be in good condition. I peeled it off and separated the melted wires. Fasteners, Boat Windshield Plumbing, Fresh Water Boat What damage could the overheat do. You may have to replace your water pump impeller but i doubt that you did any major damage. Acessories, Fish Cleaning Overheating ruins the lubrication and the metals parts start melting and sticking together. Combos, Fishing Tools & Cushions, Lexington Manufacturer, Boat Tables & Harware, Marine Nuts, Bolts, & & Live Bait The other day before i backed it down do i hear a `` clakity '' while... Replace these elbows before they cause further damage melting and sticking together at. Repair Manual 0 boat that was drystacked in SC to have to work on a wet system... Pans routinely get over 500F and they do n't warp or crack websites correctly the front of my has! Transmission, as the additional weight causes the transmission to have to replace your pump!, please enable JavaScript in your browser before proceeding been sitting for several months without being run guarding the passages. And temp was about 160, oil pressusr good i noticed smoke from the front of my engine in past... Smoke from the front of the Stator-Rotor underway … Checking the compression is to asses the damage by... Have taken place if it stays cool while underway … Checking the compression is to asses damage... 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