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Overheating on 1997 Mercruiser 7.4L. THe exhaust tube on the
THe exhaust tube on the right side of the engine is getting hot. Left side runs at 103 degrees F, right side is 170 … read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
22,882 satisfied customers
I have a 2014 Mercruiser 5.7 fresh water cooled. It
I have a 2014 Mercruiser 5.7 fresh water cooled. It overheated yesterday. I put a gallon of coolant in tonight and ran it. It stayed at 160-170 at dock idling for 15 minutes. I took it for a ride and … read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
22,882 satisfied customers
1985 mercruiser 260 inboard. Impeller let go, nothing left
Hi, 1985 mercruiser 260 inboard. Impeller let go, nothing left when I changed it. New manifolds and risers. Starboard exhaust host at riser extremely hot and melts, starboard exhaust manifold seams co… read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,409 satisfied customers
My mercruiser engine raw water cooled the port riser very
hi my mercruiser engine raw water cooled the port riser very hot to touch engine temp normal… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
22,882 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
11,409 satisfied customers
I have a 2001 Mercruiser 7.4L MPI on a Bravo 3, Serial #
I have a 2001 Mercruiser 7.4L MPI on a Bravo 3, Serial # ***** My temp gauge goes up and down from 160 to 170. I'm planning on changing the sender and checking the wires on the sender and gauge but th… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
22,882 satisfied customers
Jason, I have 1987 Bayliner with 454 engines. It runs well
Jason, I have 1987 Bayliner with 454 engines. It runs well at normal speeds and engine temperature seem fine on both engines. However, when you go at full throttle at 2800 rpm there is a white/gray sm… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
22,882 satisfied customers
(###) ###-####excellent running condition. Last week got a little
(###) ###-####excellent running condition. Last week got a little low in the anchoring spot and sucked up a ton of muk leaving the location. Ruined the starboard impeller so changed it. Boat runs exac… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
22,882 satisfied customers
Tan here is a follow up based on your suggestions... The
Tan here is a follow up based on your suggestions... The pressure test of the cooling system did not reveal any real issue. There was a slight drop in pressure of the port engine but very very close t… read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,409 satisfied customers
lost my water pump impeller on 98 330 sea ray with v drives
lost my water pump impeller on 98 330 sea ray with v drives last year local shop replaced impeller. they did not flush system so they came back and removed a few pieces of rubber because of a lack of … read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,409 satisfied customers
i have twin Mercruiser 305 ci (MIE228) in a 1978 Bertram 28
i have twin Mercruiser 305 ci (MIE228) in a 1978 Bertram 28 the port engine has been overheating with the temp gauge showing rapid increase at higher rpm, then dropping when rpms are reduced and engin… read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,409 satisfied customers
I have a 7.4 L , closed cooling, inboard. The motor was running
I have a 7.4 L , closed cooling, inboard. The motor was running around 160 to 180. Replaced the raw water pump but it did nothing. Old one was in good shape. Pulled out the thermostat, that got me hom… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
22,882 satisfied customers
I have a 1999 Stingray with a 4.3 mercruiser sterndrive. I
I have a 1999 Stingray with a 4.3 mercruiser sterndrive. I started the engine for the first time the year ( on the trailer, with garden hose attached ). A lot lore water exited the exhaust ports on th… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
22,882 satisfied customers
5.7L raw water cooled. Starboard side riser running too hot
5.7L raw water cooled. Starboard side riser running too hot to touch. Changed the riser with a new one, no difference. Still running hot on the one side.… read more
James
James
Certified Marine Mechanic
Vocational, Technical or Trade Scho
4,094 satisfied customers
hi there, 1997 38 carver sant. runs hot like 210 degrees and
hi there, 1997 38 carver sant. runs hot like 210 degrees and every part has been changed.454s 650 hours and i am afraid to go far because it will overheat.… read more
Jeremy R.
Jeremy R.
5,362 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 1979 mercruiser with 350 chev engine having over heating
I have a 1979 mercruiser with 350 chev engine having over heating problems. How much water should come out of the house right after the stern drive hooked up to garden hose? Trying to trouble shoot pr… read more
K. Kergan
K. Kergan
Inboard/Outboard Mechanic
Vocational, Technical or Trade Scho
1,031 satisfied customers
I give up. I have a 2002 Mercruiser 5.0L MPI with bravoIII.
I give up. I have a 2002 Mercruiser 5.0L MPI with bravoIII. Keeps overheating. I replaced EVERYTHING!! Thermostat , Water Circulating pump twice, Sea water impeller, Exhaust Mans & Elbows. Hoses are u… read more
James
James
Certified Marine Mechanic
Vocational, Technical or Trade Scho
4,094 satisfied customers
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