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2005 150XR6. Been dealing with some overheating issues for
Second opinion] 2005 150XR6. Been dealing with some overheating issues for quite some time now. Tried just about everything I can think of so looking for any other ideas. The problem I originally had … read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
22,043 satisfied customers
I asked you a question a couple weeks back about the
Hello Charles, I asked you a question a couple weeks back about the operating temps of my 2005 150xr6. You helped me narrow down that the exhaust tuner was loose and that was probably causing my eleva… read more
Charles
Charles
Marine Mechanic
Certified Mercury Tech
5,754 satisfied customers
2005 Mercury 150 XR6. Have a question about operating
2005 Mercury 150 XR6. Have a question about operating temperature. Boat was new to me last year. Did not have a temp or water pressure gauge when I got it. I installed both this year so I could keep a… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
22,043 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
22,043 satisfied customers
I have a Westerbeke 60 with freshwater cooling the surge tank
I have a Westerbeke 60 with freshwater cooling the surge tank and exhaust manifold are one peace. the fresh water side has never had anything but anti/freeze and has been changed yearly. the boat has … read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
22,043 satisfied customers
2001 merc 150 carb engine. S/n 0t395869 , engine is running
2001 merc 150 carb engine. S/n 0t395869 , engine is running warm at idle speed in gear temp around 160-180 and tell tail is weak,anything above idle speed all is good,temp is steady at 140-145 and goo… read more
Charles
Charles
Marine Mechanic
Certified Mercury Tech
5,754 satisfied customers
Hi Jason! I have a 2001 135 Optimax with the same problem,
Hi Jason! I have a 2001 135 Optimax with the same problem, overheat at idle, perfect temp at approx. 1500 rpm and above. The poppet valve is mentioned a lot on different sites, but as I understand, th… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
22,043 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
11,409 satisfied customers
I have a 2001 searay 210 with 60 hrs. Mcm 5.0 efi. It starts
I have a 2001 searay 210 with 60 hrs. Mcm 5.0 efi. It starts fine and idles fine then after we run it for a about 20 minutes then slow down to a no wake speed or just idle it has a constant loud horn … read more
Joe
Joe
Owner Kingsland Auto & Marine Services
Vocational, Technical or Trade Scho
1,396 satisfied customers
My 1988 V150 has a figure-8 shaped poppet valve cover--one
My 1988 V150 has a figure-8 shaped poppet valve cover--one larger hole where the poppet valve is and a smaller hole,both in the engine block --the small hole has a plug and o-ring that was just laying… read more
Jeff G.
Jeff G.
Marine Mechanic
Vocational, Technical or Trade Scho
4,730 satisfied customers
new oil and filter, new impeler, engine temp was at 170-180.
new oil and filter, new impeler, engine temp was at 170-180. the exhaust risers were smoking a bit, and the exhaust temp senser melted off starboard side. oil preasure started out around 30- 40 then d… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
22,043 satisfied customers
I have a 1991 Mercruiser 350 Mag, 260hp with a Alpha One (Gen
I have a 1991 Mercruiser 350 Mag, 260hp with a Alpha One (Gen One) outdrive. The impeller was replaced in the lower leg at the end of last season, and so far has seen about 5 to 10 hours use. The engi… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
22,043 satisfied customers
2005 merc 2 stroke runs at 180 degrees at 3200 and above and
2005 merc 2 stroke runs at 180 degrees at 3200 and above and below 1500 degrees at 2000 rpm the temp rises until rpms are increased. water pump checks good, poppet valve good, removed the orfices from… read more
Jeff G.
Jeff G.
Marine Mechanic
Vocational, Technical or Trade Scho
4,730 satisfied customers
I have a Mercury 150 XR6 that has had a problem with overheating.
I have a Mercury 150 XR6 that has had a problem with overheating. The engine will overheat at anything above idle, but will cool back down once on plane and running about 45-50 mph. Reduce speed and i… read more
tom
tom
outboard mechanic
High School or GED
117 satisfied customers
I have a 99 Merc 150 XR6. I have a temp warning buzzer and
I have a '99 Merc 150 XR6. I have a temp warning buzzer and an in dash temp gauge. The gauge just reads cold to hot. Starting about two years ago, then temperature gauge would creep up when at a fast … read more
Noel Schembri
Noel Schembri
Marine mechanic
Diploma
2,716 satisfied customers
jeff, here is the entire story. i have pr merc offshore 200. they
jeff, here is the entire story. i have pr merc offshore 200. they have always run "hot" in my opinion gauge says 140 at idle and 190 when running. i have installed new t stats, poppet, and water pump … read more
Jeff G.
Jeff G.
Marine Mechanic
Vocational, Technical or Trade Scho
4,730 satisfied customers
I have a Mariner Optimax 135 HP outboard (2005 mod). The issue
I have a Mariner Optimax 135 HP outboard (2005 mod). The issue is that at idle speed the temperature stays steady at about 140 degrees F, and by increase the engine speed to about 1600 rpm the tempera… read more
Jason
Jason
Associate Degree
210 satisfied customers
What should the water temperature (degrees) be at high speeds
What should the water temperature (degrees) be at high speeds for a 1993 Mercury 200 EFI. Bob Davenport… read more
Captain Dave
Captain Dave
Marine Mechanic
Master's Degree
2,672 satisfied customers
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