ROBERT CROSS
Well-Known Member
I left the cowl on our 225xPM, was able to move the needed hose's & stuff to get to it. Just take your time...it ain't rocket science, if Jose can do it, you can.
Bob
http://www.youtube.com/watch?v=tPJndPiVITk
225 promax low water pressure at idle
- Thread starter allisonjr
- Start date
Bob
http://www.youtube.com/watch?v=tPJndPiVITk
chad202
Well-Known Member
Do you have high temp issues?
njj502
Active Member
Then it obviously not correct as it left Merc. That hose from the poppet runs to a fitting on the top of the block right behind the flywheel.
chad202
Well-Known Member
Exit the poppit goes to the fitting on top behind the flywheel on your motor. It doesn't have to but from merc that's how it comes.
njj502
Active Member
That's the poppet cover. Never seen one plugged like that but ain't seen em all. Wonder why it's plugged? I'd bet someone ran washers & a blocked poppet on it....
njj502
Active Member
Strange.... That u tube vid was good other than I never jack with the hard plastic seat in the block...
ROBERT CROSS
Well-Known Member
Exactly what I thought 'til seeing this....
http://www.ebay.com/itm/O-13-USED-MERCURY-QUICKSLIVER-V6-OB-14462C-POPPET-VALVE-COVER-USED-OLD-STYLE-/160884553002
Still wonder though if there is actually a valve behind the cover...guess we won't know 'til it's apart.
.....no return hose.Bob
:at the bar
Last edited:
90 5.0
Active Member
260/280/drag don't have poppets right??
Wonder if it has a one piece adapter and is set up like hi po cooling system??
I could be way off here though
Wonder if it has a one piece adapter and is set up like hi po cooling system??
I could be way off here though
njj502
Active Member
That very well could be as none of the above mentioned have poppets.
chad202
Well-Known Member
I didnt block off mine but did route it out the back instead of to the top the block. If I remember right, the reason it goes to the top the block is to preheat the water coming into the engine. Promaxes usually are a hot running motor. Mine run 175-180 in the hot louisiana summer. I put the poppit out the back instead of the top cause our water down here is already pretty warm compared other places so no need in preheating the water. I did however leave the poppet in place but cut one coil of the spring off making easier to open and earlier.
allisonjr
Active Member
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Well took the boat out saturday, let the engine run to make sure it wouldnt run hot. Then ran the boat down the water, pressure came up engine stayed cool. Stopped and the water pressure stayed as it should! Only thing that i can i figure is a blockage that i couldnt get to, and i think running the motor pushed it on out. The motor ran great and never ran hot so i was thrilled! Thanks to everyone for the help its always appreciated
whipper
Well-Known Member
Great to hear!! Thats a good thing to do. ive ideled thew shallow water some times and despite my best efforts worry about picking some sedement up. Once I can open her up I pay close attention to temps and water pressure. If after idle when going 50+ temp come down I know id be good to go. If when running smooth and fast they still climb not so good to go.:beer:
GrandLakeGAR
Active Member
My Mercury service manual specifies 50 in/lbs on the three water pump cover nuts, seemed way to tight to me and much higher than I ever used before. But after rupturing a gasket or two over the years I asked Weed at European Marine if that was really correct and he said yes. I gritted my teeth and torqued them down to that value, didn't crush or deform the plastic cover and all has been good since then.