Buddy of mine bought a Pro Max power head ,complete and installed. Water pressure is fine until RPMS go past 4000 then gauge quivers and drops to 5 psi. Drop RPMS to 3800 and pressure jumps to 15-18 and stays there unless you go above 4000 RPMS or drop to idle. What are we missing? Has new t-stats,water pump. Have had heads off looking for trash in water passages in block.
Last edited by retiredmechanic; 07-17-2018 at 05:56 AM.
Just asking so .....are you running it in the lake ? Are you running to high and foot sucking in air?
Has a low water nose cone, yes we were running it in the lake. Does the same thing on the hose. Because he bought power head only, don't have a serial number.Originally Posted by transdep1
sounds like poppett problem mabe,mtr hight look good ?????
.................................................. ...the scariest thing in life is the unknown ...................................
What was the pro Max powerhead installed on? What Mid/Lower? Sometimes they don’t gel together, different passages.
Mercury 2002 200hp Carbed Saltwater
OT566776
2002 Cape Horn 22' Bay
Was mounted on a 200 EFI mid. Was told to use certain mount plates and it would work.
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OK, Missed the sticky at top.
.................................................. ...the scariest thing in life is the unknown ...................................
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