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1963 10 hp starts and runs cold. When it gets hot it will
1963 10 hp Johnson starts and runs cold. When it gets hot it will suddenly quit. Try to pull rope starter and its stuck. Wait to cools down and route will pull again. This repeats. … read more
Tan
Tan
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Certified Marine Technician
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318 Chrysler Marine engine, raw water cooled. Replaced thermostat
318 Chrysler Marine engine, raw water cooled. Replaced thermostat & sensor on leeward engine as it is running very cold. The temp gauge was tested and works fine. The manifold is cold. Engine continue… read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
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Tan, I have twin 1987 mercruiser 260s that the inboard manifold
Tan, I have twin 1987 mercruiser 260s that the inboard manifold on the starboard engine is overheating. I replaced the manifold with a new GLM manifold and exhaust elbow 3". It still overheated. I rep… read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,409 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
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11,409 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
I asked this question before but did not get an answer that
I asked this question before but did not get an answer that could solve the problem...Okay here it goes again. I have a 1981 mercruiser 260 hp .. I have just changed over my exhaust manifold system fr… read more
Captain Dave
Captain Dave
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Master's Degree
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converted my v8 mercruiser log stye manifold system to the
converted my v8 mercruiser log stye manifold system to the Center rise model...The problem is that one side of the exhaust runs warm and the other side runs hot ? The temp guage on dash is normal...Wh… read more
Kenny
Kenny
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I there, I have a 82, V4, 90hp, Evinrude with a overheating
I there, I have a 82, V4, 90hp, Evinrude with a overheating problem in the right hand cyclinder bank, as viewed from the rear. So far I have removed the head, the restrictors are in place, replaced ga… read more
Jeff G.
Jeff G.
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Vocational, Technical or Trade Scho
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Hello, I have a 1983 Bertram 28 Sport Fisherman with twin
Hello, I have a 1983 Bertram 28' Sport Fisherman with twin 230 hp merc IB with a closed cooling system. My starboard eng.started to run hot, about 170' and blowing white smoke out the exhaust port, th… read more
Captain Dave
Captain Dave
Charter Captain & I.S. Director
Master's Degree
2,808 satisfied customers
I HAVE A 1996 EVINRUDE 150HP (60 degree V6)I am getting water
I HAVE A 1996 EVINRUDE 150HP (60 degree V6)I am getting water driping fron my lower 2 carburator throates while running. I checked for water in gas and oil tanks and drained filters no water. I remove… read more
Master Tech
Master Tech
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Vocational, Technical or Trade Scho
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my 1995 evinrude overheats on full throttle, full plane only.
my 1995 evinrude overheats on full throttle, full plane only. I have replaced the stats and flushed the motor with stats removed and the problem still exists. Also replaced the water pump. Is there a … read more
Master Tech
Master Tech
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Vocational, Technical or Trade Scho
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Ive got twin 2007 Evinrude 225 ETECs. Churned up some bottom
I've got twin 2007 Evinrude 225 ETECs. Churned up some bottom mud and shortly thereafter had an overheat alarm on the port engine. Shut her down and let cool, then ran the last mile into pier dead slo… read more
Master Tech
Master Tech
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Vocational, Technical or Trade Scho
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I have a 5.0l Mercruiser. A few minutes after starting the
I have a 5.0l Mercruiser. A few minutes after starting the engine, the water from the thermostat housing to the engine water circulating pump, and the starboard manifold becomes very hot, the water to… read more
capt ron 1959
capt ron 1959
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Vocational, Technical or Trade Scho
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After a couple of hour run at least 3/4 throttle, my 1999 Mercruiser
After a couple of hour run at least 3/4 throttle, my 1999 Mercruiser 4.3 risers doesn't seem to be heating equally. The starboard riser seems it's normal hot to touch, while the port riser is barely w… read more
Dominick
Dominick
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Vocational, Technical or Trade Scho
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We have a 1989 120 Evinrude outboard. We have just installed
We have a 1989 120 Evinrude outboard. We have just installed new thermostats, and the telltale is strong. When we drive at moderate to fast speeds, the alarm comes on and the motor stalls. What should… read more
Master Tech
Master Tech
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i have a1986 175hp evinrude that the left cylinder head is
i have a1986 175hp evinrude that the left cylinder head is not getting water thru it yet the right side is, the thermos are fine & the waterpump is good there is water comming out the telltale please … read more
Larry B.
Larry B.
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High School or GED
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hi I have a 1979 150 hp evinrude, the motor was rebuilt before
hi I have a 1979 150 hp evinrude, the motor was rebuilt before I purchased it, now I'm having problems with the port head running very hot while the starboard head feels very cool to the touch. I've r… read more
Yachtwork
Yachtwork
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HAVE REPLACED THERMOSTAT IN 88 48 HP EVINRUDE, ...
HAVE REPLACED THERMOSTAT IN ''88 48 HP EVINRUDE, WHAT''S MAKING IT OVERHEAT? WATERSTREAM FROM COOLING WATER IS GOOD. THE ALARM GOES OFF AFTER THE ENGINE RUNS FOR A FEW MINUTES. I''M TOLD BY A GOOD MEC… read more
JUST-IN-TIME
JUST-IN-TIME
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Ted G.

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Tan

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Jeff G.

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Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

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