![I have a 1999 mercury optimax 200 hp. just replaced the water pump assembly after putting it together and running with I have a 1999 mercury optimax 200 hp. just replaced the water pump assembly after putting it together and running with](https://f01.justanswer.com/JACUSTOMERlujie85g/2014-05-13_174758_boat_002.jpg)
I have a 1999 mercury optimax 200 hp. just replaced the water pump assembly after putting it together and running with
![Inexpensive way to diagnose fault codes from a Mercury Optimax motor - The Hull Truth - Boating and Fishing Forum Inexpensive way to diagnose fault codes from a Mercury Optimax motor - The Hull Truth - Boating and Fishing Forum](https://cimg2.ibsrv.net/gimg/www.thehulltruth.com-vbulletin/2000x1504/34778b4a_c2d2_4cf5_a6bc_0ca8c093ba43_c7c1b2bd8674290d9f63fa4e3f15a69e21128b59.png)
Inexpensive way to diagnose fault codes from a Mercury Optimax motor - The Hull Truth - Boating and Fishing Forum
![Find Mercury DDT Scan Tool Smartcraft Diagnostic 1.31/outboard 5.0/mercruiser 2.0 in El Dorado, Arkansas, United States, for US $1,300.00 Find Mercury DDT Scan Tool Smartcraft Diagnostic 1.31/outboard 5.0/mercruiser 2.0 in El Dorado, Arkansas, United States, for US $1,300.00](https://www.2040-parts.com/_content/items/images/28/1353528/001.jpg)
Find Mercury DDT Scan Tool Smartcraft Diagnostic 1.31/outboard 5.0/mercruiser 2.0 in El Dorado, Arkansas, United States, for US $1,300.00
![Inexpensive way to diagnose fault codes from a Mercury Optimax motor - The Hull Truth - Boating and Fishing Forum Inexpensive way to diagnose fault codes from a Mercury Optimax motor - The Hull Truth - Boating and Fishing Forum](https://cimg3.ibsrv.net/gimg/www.thehulltruth.com-vbulletin/2000x1504/2fac9640_2e51_4c65_8ca3_a4789c8ccd89_b68dc0302cee17254f83d0e0bb3bdaee147976d4.png)
Inexpensive way to diagnose fault codes from a Mercury Optimax motor - The Hull Truth - Boating and Fishing Forum
![Inexpensive way to diagnose fault codes from a Mercury Optimax motor - The Hull Truth - Boating and Fishing Forum Inexpensive way to diagnose fault codes from a Mercury Optimax motor - The Hull Truth - Boating and Fishing Forum](https://cimg0.ibsrv.net/gimg/www.thehulltruth.com-vbulletin/2000x1504/1f070e42_156f_4106_bb32_6caf758a4f0c_a10b700b22e6b638b53170f59c3f43cbee0edb92.png)