*new* Merc Optimax question

THEFERMANATOR · #1 08-10-2009, 08:19 AM

Chances are the poppit valve assembly still has sand in it and isn't opening properly and re-directing the water flow to cool it under power.

shaneburris74 · #2 08-10-2009, 08:23 AM

Thanks ferm, Any proposed fix? you gotta bust it open to get to it?

THEFERMANATOR · #3 08-10-2009, 08:46 AM

The last time I had one get that bad I ended up dropping the lower unit and hooking a hose straight to the water tube, pulled the stats out and the bypass and turned the hose on full blast. Then put the bypass in and repeated this, then put the stats in and let the water run for about 10 minutes. This worked for me in the past. The thing is you need pressure and volume to flush it out. On a hose you will be lucky to get 7 pounds of pressure through the block whereas a hose can get about 20 when hooked up directly. The flushing hoses just are not big enough to flush out an engine and many manufacturers have admitted this.

phatdaddy · #4 08-10-2009, 09:43 AM

i also think if he runs to bass pro, they will not cover it under warranty. sand in the system is not a defect in materials & workmanship.

shaneburris74 · #5 08-10-2009, 12:12 PM

Alright, I'll pass this info along. PD- I was worried myself about them not covering it..seems crappy if they don't. I've already told him If I was him I wouldn't touch it. I'd get it done under warranty if possible...I would definetly find out for sure before jumping into it. Thanks guys.