Motor checked in storage, hasn't been run in a week. How close should the temp sensors be (air/coolant), 1998 Merc 250 EFI ?? DDT says AIR @ 63 & COOLANT @ 72, should they be closer. Block temp as checked with a pyrometer says 68 degrees.
Motor checked in storage, hasn't been run in a week. How close should the temp sensors be (air/coolant), 1998 Merc 250 EFI ?? DDT says AIR @ 63 & COOLANT @ 72, should they be closer. Block temp as checked with a pyrometer says 68 degrees.
Gary
Growing old is inevitable, growing up is optional.......
S.W. Ohio
Test the resistance of the two sensors and compare with the guidelines in the Service Manual.
Normally, the temp sensors (on a cold engine) will be within 3 degrees of each other (approximately).
Dual Mercury Master Technician- for Mercury Outboards, Mercruiser and Mercury Racing at European Marine in Greenville, SC.
Still consider myself a "Marine Apprentice" after 48 years (learn something new every day).
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Thanks Don, appreciate the info...........
Gary
Growing old is inevitable, growing up is optional.......
S.W. Ohio
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