normal operating temp. for 4.3 mpi engine?

no1shep

Cadet
Joined
Nov 19, 2004
Messages
22
what is the normal operating temp. for a 4.3 mpi. ? THANKS for any advice .........
 

no1shep

Cadet
Joined
Nov 19, 2004
Messages
22
Ayuh,..... 160/ 170° or so,.... What's Yer's runnin',....

it's running closer to 190 at slightly fast idle ,with muffs on outdrive. tach not working ,not sure about rpms. tach has not worked since warranty ran out.
 

alldodge

Moderator
Staff member
Joined
Mar 8, 2009
Messages
41,419
it's running closer to 190 at slightly fast idle ,with muffs on outdrive. tach not working ,not sure about rpms. tach has not worked since warranty ran out.

Your problem may just be the city water supply is not providing enough water through a 3/4 inch garden hose. Not good to increase rpm above 1000 or so on muffs. If it stays cool in the water, there is no issue
 
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