Mercruiser 496 HO 2007 overheating

Butbro

Cadet
Joined
Aug 27, 2023
Messages
11
The engine runs fine after new sparkplugs and cleaning injectors.
But after that it alarm for overheating , it comes over 4300rpm, it is 175 degres all the time but over 4300rpm it gets varm.
Now I change impeller but how do I make whith the back part of pump when it look like this.? And could this be the overheating problem?IMG_8741.jpeg
 

alldodge

Moderator
Staff member
Joined
Mar 8, 2009
Messages
42,054
Need to replace the rear cover.
Search for Merc pump housing and will be able to find the rear cover
 
Top