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2003 Volvo penta 4.3gl sounding an audible alarm. Oil was
2003 Volvo penta 4.3gl sounding an audible alarm. Oil was changed and pressure is checking out good on gauges. Temp gauge is off though according to mechanic reading 30 degrees too hot. When tested in… read more
Jason
Jason
Marine Mechanic
18,814 satisfied customers
My volvo penta 4.3 engine is overheating. Replaced thermostat
My volvo penta 4.3 engine is overheating. Replaced thermostat and impeller and it continues to overheat. Feels like water is being pumped in, no leaks observed or weeping of water pump, but water does… read more
Jason
Jason
Marine Mechanic
18,814 satisfied customers
I just repowered my 28 bertram with two reman 5.7's these are
i just repowered my 28 bertram with two reman 5.7's these are the older block 010 gm's (pre vortec). i have new risers, manifolds, raw water pump, and all hoses are new. the boat is fresh water cooled… read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,264 satisfied customers
Engine SN: OW673430, mercruiser 5.0 MPI, drive serial num OW927662.
engine SN: OW673430, mercruiser 5.0 MPI, drive serial num OW927662. use boat in saltwater, engine is open cooled system using seawater for cooling. Temp are running between 185 and 205 on gauge on boa… read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,264 satisfied customers
I have a 2001 Mercruiser 5.7 litre Thunderbolt V engine. The
I have a 2001 Mercruiser 5.7 litre Thunderbolt V engine. The engine ran hot a week ago. I replaced the outdrive water pump, both risers and manifolds, the thermostat, checked all the hoses for blockag… read more
Jason
Jason
Marine Mechanic
18,814 satisfied customers
I have a 1978 Egg Harbor sport fish with twin 270 HP Crusader
I have a 1978 Egg Harbor sport fish with twin 270 HP Crusader gas engines (350 GM blocks) - raw-cooled. The starboard engine has never been touched and has around 2200 hours. Over the past couple of s… read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,264 satisfied customers
Mercruiser 4.3LX V6 with Alpha Gen 2 drives. Thunderbolt Ignition.
Mercruiser 4.3LX V6 with Alpha Gen 2 drives. Thunderbolt Ignition. Standard carburetor. Problem: Starboard Engine High Speed Overheating At idle and speeds up to 2000 rpm, temp is ok. After getting up… read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,264 satisfied customers
I have a 350 MAG MPI Inboard Centre mount 1999. Recently changed
I have a 350 MAG MPI Inboard Centre mount 1999. Recently changed the manifolds and risers, impellor and thermostat. I was told to drill out the small hole in the stainless steel gaskets between the ri… read more
orcamarine
orcamarine
Proprietor
Vocational, Technical or Trade Scho
7 satisfied customers
Ive got a Mercruiser 350 Mag in my 2000 Tige wake-board boat.
I've got a Mercruiser 350 Mag in my 2000 Tige wake-board boat. We had a major service in early June 2012 (fluids, plugs, impeller, etc.) It ran great on our next trip out two weeks later. Then in earl… read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,264 satisfied customers
I have a 2007 sea ray 230 select with a 350 mag and bravo three
I have a 2007 sea ray 230 select with a 350 mag and bravo three deive. The other day we took it out and I ran it WOT with the captains call on it ran hot after about 10 minutes. We shut it down to coo… read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,264 satisfied customers
what causes a 7.4 to run 200 degrees when its twin runs 175
what causes a 7.4 to run 200 degrees when its twin runs 175 degrees. I have changed everthing then I crossed wired everthing to the port motor.It still runs 200 deg. Ive used a laser temp. gun and com… read more
Jason
Jason
Marine Mechanic
18,814 satisfied customers
i have a mercruiser 496 mpi 8.1 closed coolant sysem manifold
i have a mercruiser 496 mpi 8.1 closed coolant sysem manifold sensors throw an alarm at about 175 degrees. The engine temp with a temp gun is 165, the manifold are the same and the risers get up to 20… read more
James
James
Certified Marine Mechanic
Vocational, Technical or Trade Scho
4,094 satisfied customers
I have a 2007 volvo penta 8.1 Gi-H with 20 hrs and am experiencing
I have a 2007 volvo penta 8.1 Gi-H with 20 hrs and am experiencing increased engine temps when the boat is running between 2000 and 2500 rpm. the temp runs normal at 3000rpm but when in rough seas we … read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,264 satisfied customers
Have a 5.7L I/O with raw water pick-up pump ( replaced impellar
Have a 5.7L I/O with raw water pick-up pump ( replaced impellar ), installed new 160 degree thermostat. Engines starts fine, temp goes to 180 and stays there. Can cruise for hours below approx. 2500 r… read more
Jeremy R.
Jeremy R.
5,362 satisfied customers
I have a 2003 200 select with a 5.0L Mercruiser Bravo 3 engine.
I have a 2003 200 select with a 5.0L Mercruiser Bravo 3 engine. Just replaced the Thermostat last season and the impeller this summer. Since then, the gauge still says that I am running to hot. I have… read more
Jeremy R.
Jeremy R.
5,362 satisfied customers
I can run all day as long as i dont exceed 3500 rpm. Any time
I can run all day as long as i don't exceed 3500 rpm. Any time I do, the temp creeps up to 175, goes into alarm and the motor goes into protection mode. The temp then spikes to 205. Used a temp gun an… read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,264 satisfied customers
I have a 1988 searay with 2 454 340 hp fresh water cooled engines.
I have a 1988 searay with 2 454 340 hp fresh water cooled engines. when I bought it back in 1998 the starboard engine ran 10 degrees hotter then the port engine I replaced the raw water impeller clean… read more
Jeremy R.
Jeremy R.
5,362 satisfied customers
I have a 2001 4.3L V6 Mercruiser with an Alpha outdrive. The
I have a 2001 4.3L V6 Mercruiser with an Alpha outdrive. The stock one piece exhaust elbows rusted out and water got into the engine so I pulled the motor out and rebuilt it. The heads were taken in a… read more
Captain Dave
Captain Dave
Marine Mechanic
Master's Degree
2,672 satisfied customers
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Dominick

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Tan

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Jeff G.

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