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    2003 BF225 misses or fuel starved or vapor locks ???

    Quick story, I have twins and last yr was CONVINCED I had a fuel starvation issue (intermittently) with my starboard engine. It would sometimes only get to around 4000 rpm's at wot. I changed all the filters and basically rebuilt the vst...then at my wits end replaced the spark plugs and that...
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    '03 BF225 - 2 issues, oil leak and surging with low rpm's

    I've got 2 issues I'm going to tackle when my parts come in. I used the search feature here and I believe my high pressure fuel filter is clogged on one of my 225's. The port is great and will go to 3500 rpm's wot when the other is just idling. The starboard will only to go 2900 rpm's and surges...
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    '03 225hp

    I've got a pr of 225's that I bought a few months ago. They have been running perfect. This past weekend the starboard motor alarmed 2 times. Running at about 3800 the buzzer came on steady and the rpm's dropped way down and I immediately brought them both to idle. Buzzer stayed on. I cut the...
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    Please verify - Bravo question

    I have a 2003 Bravo 1, I believe I could unbolt it and bolt a Bravo 3 in it's place??? 2nd question: I'm running a 3 blade 15 1/2 x 15 pitch now, would both Bravo 3 props be 15" pitch?
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    2002 6.2 rough at low rpm's

    2002 6.2L mpi // starts and idles fine, good power to cruise and beyond. Problem I just noticed, when trying to run just above idle speed to 1200rpm's it is rough and will stall out if I don't mess with throttle. Problem exists in neutral and in gear as well.
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    Bravo 1 trim cyl. - how free should it be? 2003

    I've got a 2003 Bravo 1 that will go up but not down. Motor runs in both directions. If someone holds trim down and I go stand (180#) on the drive it will go down. I disconnected both arms and 1 works and the other is motionless in both directions. I pulled the bad one and rigged up a chain...
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    '2003 6.2 fi - 320hp - cooling question

    Is it full or 1/2? What's the difference? Where does engine anti-freeze coolant flow in each type? Where does raw water flow in each type? I've got a manual that shows coolant flow but it does not distinguish between raw and closed very well. Engine serial # OMO46060
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    Reassurance on Ujoints

    "I have had a slight knocking "I have had a slight knocking noise from my outdrive for the past few years mainly at trolling speed in a hard turn. When straight no noise. I've had the drive off and could not find any play in the u-joints or the bearing. No water or rust in there. Yesterday I...
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    Turn key starting

    "Other than "pretty good&# "Other than "pretty good", how does the Mercruiser turn key starting work? I'm talking about the carb'd engines. Do they have a computer (much like the f.i. engines) that adjust mixture and timing? I know they have electric fuel pumps which eliminates the need to pump...
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    2006 vortec valve lash

    "set valve lash using firing o "set valve lash using firing order method (rotate engine til intake lifter goes down) set to zero, then 1 full turn down. Now when engine is rotated various rockers will be slightly loose. what's going on?????"
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    Small ports in block what are they

    2006 Mercruiser 350 Magnum. 2 2006 Mercruiser 350 Magnum. 2 brass hose fittings (1 on either side) screwed into the engine block. 1 inch above the oil pan and roughly in the center (front to back). They stick out 1 inch and it looks like you could push 3/8 i.d. fuel line onto them. Are they...
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    V8 water passages not used

    "On a 2006 Vortec for instance "On a 2006 Vortec for instance, why are the 2 rear water passages on the intake manifold blocked off?"
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    Aluminum intake torque specs

    cast iron vortec heads - vorte cast iron vortec heads - vortec (8 bolts) aluminum intake manifold. What is the proper torque?
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    Engine coupler question

    "Over the winter I will be rep "Over the winter I will be repowering my boat from a 1994 Mercruiser 5.7 4 barrel to a 2006 Mercruiser 350 Magnum (not with FI though, obtained a long block and will add intake and 4 barrel). The old engine is rated 235hp and the newer one should be close to...
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    Replacement engine 1994 57 to vortec

    "What would be needed to do th "What would be needed to do this swap? Complete 1994 5.7 alpha 1 gen II 4 barrel to a 2006 5.7 Vortec long block. Found a vortec long block that looks like a good deal, it would need intake, carb, circulator pump and probably other things. Electric fuel pump? Can...
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    BF15A

    Around a 1999 model. Starter m Around a 1999 model. Starter motor is weak. Usually will go 1/2 turn until it reaches compression and stops. I have been hitting starter button with one hand and pulling rope with the other and it starts right up and runs fine. I've tried a differant known good...
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    57 four barrel floods after shutdown

    "1994 starts easily, runs fine "1994 starts easily, runs fine, problem is when I cut it off then try to restart I have to open the throttle fully to get it to fire. I know a carb rebuild should take care of the problem, my question is what specifically in the carb is the problem? I guess raw...
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    Carb problem easy fix

    I've got a 1994 5.7 alpha I've got a 1994 5.7 alpha 1 gen II w/ 4 barrel. It starts fine when cold. When I try to start it when warm it is flooded and I have to open throttle fully to get it to fire. The choke works properly. Is it time to replace the 14 yo carb? or is it a simple fix without...
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    Alpha 1 gen 2 to Bravo 3

    What would be involved to acco What would be involved to accomplish this upgrade? Can you just pull the outdrive by removing the 6 bolts and bolt the Bravo 3 right up? Engine coupler?
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    1994 57 V8 breather tubes

    My flame arrestor needs cleani My flame arrestor needs cleaning after every time out due to excessive oil buildup coming from breather tubes. If I put my thumb on either tube there is a pressure buildup. I assume this is blowby. Can this be caused by worn valve guides or is it only caused by...
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