Offshoreonly.com - thermostat question??

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88242LS

07-31-2012 02:48 PM

thermostat question??

I was recently told that my motors might run better bye changing the thermostat from 140 to 170, supposibly merc has found more power there anyone ever hear of this motors are 1994 502 efi's

The Ace

07-31-2012 06:52 PM

You should have a 160 degree stat if you have EFI's. If you don't your engine will stay in start up mode and run rich all day long.

88242LS

07-31-2012 07:57 PM

Quote:

Originally Posted by The Ace (Post 3743009)

You should have a 160 degree stat if you have EFI's. If you don't your engine will stay in start up mode and run rich all day long.

Runs 140-150 160 after a run then back to 150 or so

MnFastBoat

07-31-2012 08:58 PM

1998 502's, mine have 160s adn the guage shows 180 all the time after warmed up

The Ace

07-31-2012 11:56 PM

http://www.offshoreonly.com/forums/g...t-502-mpi.html

Griff

08-01-2012 02:00 AM

1994 502EFI's use 160* Tstats from teh factory. Somebody may have put 140's in yours. It should run 160-180* on the gauge.

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