Mercruiser Cool Fuel - Gen III failure

• Oct 30, 2019

• #1

K

Katemma Life

Member

Oct 7, 2018

135

cape cod

Boat Info

2007 sea ray 290 SLX

Engines

Twin mercruiser MAG 350 MPI w/ Bravo III

My 2007 engines have the "seemingly" flawed design and one of the units is leaking from the water side barb.
Does anyone have any practice replacing these units? Is this something that an owner can reasonably do himself or is this more technical? The units are expensive as hell and Mercury told me to pound sand when I asked for help.

They had issued a service letter about this bad design back years ago.

 

• Oct 30, 2019

• #2

S

scoflaw

Well-Known Member

Aug 10, 2011

6,395

cape cod mass, cape coral fl

Boat Info

1999 Powerquest legend 260 sx 502 mag
2005 Baja 242 islander 496

Engines

502 mpi Bravo 1
496 mag B1

Straight forward wrenching. Some of the bolts are hard to reach.

 

• Oct 30, 2019

• #3

paulswagelock

Well-Known Member

Oct 25, 2010

2,196

pa

Boat Info

2018 SDX 270 OB 300 Verado

Engines

Verado 300

Can change it in less than an hour with a few hand tools. Easy except for access.

 

• Oct 30, 2019

• #4

craigswardmtb

Active Member

SILVER Sponsor

Jul 2, 2013

316

Mystic, CT

Boat Info

2004 420 DB
2005 360 Fiesta Vee

Engines

Cummins 6CTA

I thought the known issue was around the paint inside the fuel bowl flaking off and clogging your injectors. Is this another known issue around the barb?

 

• Oct 30, 2019

• #5

K

Katemma Life

Member

Oct 7, 2018

135

cape cod

Boat Info

2007 sea ray 290 SLX

Engines

Twin mercruiser MAG 350 MPI w/ Bravo III

ya, it was made of plastic. So for salt water applications it deteriorates to nothing.