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  1. P

    Outdrive leaks, but holds pressure

    2006 Bravo3 I see a small amount of water at the bottom of lube reservoir, maybe a tablespoon. Drained all gear lube, tested pressure. Had it at 10psi for 1hr. Added gear lube, took it out for about an hour trip. After a few days of sitting there's a line of water at the bottom of reservoir...
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    New Heads - - Now runs like a steam locomotive

    2006 Mercruiser MPI 5.0 -- 450 hrs Salt water cooled Boat has twin engines. At the beginning of the season Port engine #2 cylinder had water in it. Turns out it was the head, it had a hole in the water jackets right around the seat on the exhaust port. Replaced heads and it's been running fine...
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    Engine won't START - Need some help

    MerCruiser 5.0 MPI Just installed new Cylinder heads, and performed a valve lashing according to the manual. Placed #1 cylinder on TDC -- Verified with mark on balancer and that both valves were closed. Installed the distributor with rotor pointing to #1 firing position. After installing the...
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    New cylinder heads--do i need to do a break in?

    It's a 2006 Mercruiser 5.0 mpi Salt water cooled. 423 hrs One of the old cylinder heads had a hole in the water jacket. Just installed two new ones. New gaskets and bolts Couple questions: 1. Should I do a compression test before running the motor? 2. If compression test is good, should I do...
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    Permatex on fel pro g head gasket - YES or NO?

    Getting ready to install new heads on my mercruiser 5.0 mpi. Got a set of fel pro gaskets. Yes or No on also using Permatex Form-a-gasket. Thank you
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    Cylinder Block Drains- can I delete them?

    we boat in north florida, and do not get much of freezing. Boat is stored indoors in climate controlled building. I'm in the process of installing new manifolds/risers/elbows. The Cylinder Block Drains, there are one on each side of the block, right above the oil pan. Besides using these to...
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    water in cylinders and oil - MerCruiser 5.0 MPI -- Need help finding culprit

    All even # cylinders (2,4,6,8) had water along with lots of water in oil on port engine It's 2006 MerCruiser 5.0 MPI serial # OW614502 with 425 hrs -- the boat is Chaparral 290 Signature with Twin 5.0 Engines are raw water cooled (sea water). Oil changed at the end of every season. We are...
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