Main Menu
Newest Members
bbrandog, BambulanceMan, BayouBassCat, Jaypak, cubanfisherman
106352 Registered Users
Top Posters
TexDawg 86914
hopalong 78788
Pilothawk 75551
JDavis7873® 67385
John175 ® 65720
FattyMcButterpants 60793
Derek 🐝 58852
Tritonman 57703
LoneStarSon® 53697
SkeeterRonnie 53100
Forum Stats
106352 Members
61 Forums
861806 Topics
12249171 Posts

Max Online: 36273 @ 01/23/13 02:34 PM
Topic Options
#12330046 - 07/08/17 05:04 PM 2003 Mercury Optimax Issues
Alfredo Offline

Registered: 11/25/09
Posts: 31
I had a new lower unit installed in April. Have had water pump issues ever since it was installed. I have taken it back twice and all they ever say is we just had to clean it out. I believed that after the first time since I had just been to Palestine! However, it keeps happening and it never did prior to the lower unit replacement.

I just flushed it myself and it is not flowing properly and has a lower psi at idling RPMs than previously. Anyone have any ideas....

On a separate note, last time I went out, the engine would rev to high RPMs at start up and then back off and run fine.... up until the the ear piercing constant alarm would come on alerting me to the PSI problem!

Any thoughts on how to proceed would be appreciated. Thanks.

#12330119 - 07/08/17 05:57 PM Re: 2003 Mercury Optimax Issues [Re: Alfredo]
JDJ01 Offline

Registered: 04/24/14
Posts: 255
Loc: Keller, TX
May sound dumb but my first thought is the water pump "key" that sits in a tiny void on the shaft essentially locking in the actual impeller. Maybe it's free spinning? I'm no pro but it's a simple check to just drop the lower unit.

#12330319 - 07/08/17 08:33 PM Re: 2003 Mercury Optimax Issues [Re: Alfredo]
Alfredo Offline

Registered: 11/25/09
Posts: 31
I should mention that the "shop" that did the work has found a way to charge me another $550 to tell me that there is nothing wrong with it other than there is a bunch of junk in the line!

Very frustrating!!

#12330473 - 07/08/17 10:17 PM Re: 2003 Mercury Optimax Issues [Re: Alfredo]
gary purdy Online   content
TFF Guru

Registered: 05/24/03
Posts: 11205
Loc: Littlefield Tx & Lake A. H. US...
Where are you located?
The world will not be destroyed by those who do evil, but by those who watch them without doing anything. Remember what He has done and remember that He is not done yet!-- GOD IS GOOD


© 1998-2017 OUTDOOR SITES NETWORK all rights reserved USA and Worldwide