i have a mercruiser 7.4l mpi , i pulled the manifold and risers off. How do you tell of the are good or bad. The openings do not look clogged and the metal appears to be thick. but there is a rust flaking of the water passages.
Thanks
B.matt
The boat is run in salt water. Plan on adding the Volvo flush kit over the winter.
I tried uploading pics and the file was to big. I measured the temps running at idle in 70 f water. The stbd was 98 and prt was 85. I purchased the boat in June and don't know when they where change last. The boat is run in salt water. Plan on adding the Volvo flush kit over the winter.
Thanks
i The openings do not look clogged and the metal appears to be thick. but there is a rust flaking of the water passages.
Thanks
B.matt