Re: 2001 V6 2.5L 140HP Mercury running hot
Yes I have pulled the poppet assembly apart and it all looks good. I can't really fault it at all. I have ordered new gaskets, a grommet, and a carrier. I've also ordered a new spring in case the current one isn't the correct one.
There are two holes in the block. One the carrier and grommet go into that the poppet valve seals against (I guess this is where the pressure acts on) and a slot at the 6 - 9 o'clock position. Where does the slotted passage come from/go to?
Questions....
1, Where does the poppet valve sense the pressure from? Behind the valve or from the top of the block via the hose?
2, Should I also be replacing the diaphragm or any other parts?
3, What's likely to cause it to pop open at higher pressure? Nothing looks to be causing this as all the parts look to be in good condition and the valve moves freely inside the grommet.
4, Where does the water flow when the poppet is closed/open and what is the function of this slot?
5, I'm picking up the pressure from the grey tube the exits the engine below the CMD plate. Is this correct?
Sorry for the long winded post but the more I look at the poppet assembly I can't really fault it.