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    5.7 TKS will not rev under load

    2006 Mercruiser TKS 5.7l Alhpa gen 2. new long block, new plugs wires, cap rotor, base timing set according to manual: same problem as before the new block. we replaced the block because it had very low compression on one cylinder. we thought that this low compression was causing the ecu to not...
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    raw water pump: replace or rebuild?

    Hard to believe I could not find this issue discussed previously... looked for a while. 2004 305 -Bravo 3 -fresh water cooled engine serial # OW003759 I have water coming out of the raw water pump at the shaft. Obviously needs to be fixed. A new pump is in the $400 range. Is this an easy pump...
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    5.7 tks vacuum readings

    I have searched but could not find this particular case. Engine is a 2006 5.7L TKS with TB V ignition. Timing is set at 10 BTDC. Vacuum gauge on the intake jumps rapidly from 6-14 at idle. At about 2000 rpm it reads a steady 17, on deceleration it goes to a steady 23. and- it runs rough at...
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    2005 5.7 TKS timing issue?

    This one has me stumped. have set timing per manual and per instructions on this forum. grounded to get timing base, set to 10 btdc. it runs okay at an idle, sounds like it is missing a bit though. hard to tell for sure. when revved to 2-3000 with no load, timing advances and it sounds great...
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    bought boat, cracked block, legal recourse?

    Okay, I think I know the answer to this, but I am going to ask anyway. In case it matters, this took place in Washington state. To make this as short as possible: I bought a boat that I found on craigslist. I heard it run, but did not do a sea trial. The boat is in excellent cosmetic shape...
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    volvo 305 to 350 swap ECM issues?

    So, bought a 2006 305 GXI with a cracked block. Engine # 3869309 5.0 GXI-F. Volvo wanted $5500 for a long block, at the time I thought that was a bit much. I removed the engine and tried to source a replacement. During my research, I was told several times that a 350 would be a 'bolt in"...
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    have 1981 johnson 35hp; want to make it twins

    I have 1981 Johnson 35hp, want to add another one. How do I do this? Lets say I found a good matching motor; obviously I need new controls and steering set up. Anyone have advice? Newer controls available or do I need to source some old stuff? Not so concerned with the "original" or period look...
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    starter engages then disengages and spins 4.3L

    2005 Mercruiser 4.3 TKS with gen 2 alpha one. I think I have read every starter thread on here but could not find this issue. Starter engages, turns the motor maybe one crank, then disengages and spins free. Sometimes this is combined momentarily with a nice grinding noise. I have verified full...
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    1971 Marauder 24 Flybridge repower- opinions welcome

    I just picked up this boat (picture attached). I will be doing a restoration, including removing the 351s and old OMC outdrives. I will use that space for transom gussets and storage. It will get an outboard bracket and twins- I am thinking Etec 90s. I want reliability and economy; economy...
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    another single vs twin thread: performance

    So, this thread is NOT about the OPINION of having two outboards vs one. It IS about the objective (if that exists) info on weight, power, speed, fuel consumption, etc. I live in a place where I cross straits (juan de fuca) that can get ugly in a hurry- a kicker is not what I want when the...
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    diagnosing non shifting DP-SM

    2005 Volvo 5.7/duo prop engine #4012140990 outdrive #4202124395. Driver said he "went from forward to reverse too fast" and now will not shift into either gear. I checked cable; it is operational. Pulled outdrive- it is not the coupler. The shop manual (Seloc) describes how to take this apart...
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    Honda BF2D starting after long storage

    2001 Honda 2hp 4-stroke model BF2D. Every time I used this engine, including the last time I used it 2 years ago, I turned the gas off and ran it dry. The last time I used it (2 years ago), I ran the tank completely dry. I did not use the drain on the bottom of the bowl though. Then I put it in...
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    Two 90 hp vs one 175hp outboard(s)

    There are probably threads on this already- but I could not find any. If I put two 90hp outboards on a boat, or one 175hp, what will be the difference in actual power? I know 2 will weigh more, cost more etc. But I have no idea- will the two 90hp be the same as having a 180hp on there as far as...
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    4.3L water in all 3 port cylinders

    This is a 2005 Mercruiser 4.3L TKS closed cooling. Gen 2 Alpha. I had water in all three Port cylinders, but I cannot figure it out. I have read that it could be the exhaust system somehow- BUT I also had about a cup or less of antifreeze in the pan, and some antifreeze droplets under the intake...
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    $$$$ engine noise after prop strike $$$$

    Bro -in -law hit a rock, wasted the prop and skeg. 2005 4.3 Mercruiser with Bravo 3. He ran the boat back home with the half sized prop on it. He says it ran fine other than obvious performance reduction. I repaired the skeg and installed a new prop. Started it up- it idled fine for 10 seconds...
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    Volvo outdrive gimbal replacement

    I have to change the gimbal bearing out on a Volvo outdrive. I do not know the year; below are the SN: Outdrive 28160744B Engine CU28983 Looking for help on finding manuals and/or diagrams, tips, etc. This site always has the knowledge- I hope to be able to give it back someday! Thanks in advance
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    Fault code diagnosis 5.0MPI two minute beep alarm

    2004 Mercruiser 5.0 SN OW003759 with Bravo 3 SN OW108118. Symptom: single beep every two minutes. Alarm goes away with key cycle, returns with planing speed. Fault codes read on Rinda Marinetech: 75: smartcraft- NA 94: Pitot pressure sensor (used for boat speed) circuit open 104: smartcraft-...
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    Diagnostic port location Mercruiser 5.0 MPI

    2004 Mercruiser 5.0 SN OW003759 with Bravo 3 SN OW108118. Newbie bought the Rinda Technologies diagnostic tool. All excited to use it. Cannot find the port to plug it in. I looked through both manuals (Engine and diagnostic) and they just have wiring diagrams, which are not helping me. I stared...
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    Heater install 4.3 closed

    I have the manual and it tells me where to run the hoses, and to install the heater lower than the fill cap. 1) For the output (to the heater) there is already a hose there. What do I do with that existing hose? 2) If I have water flowing to the heater, and plumb it into the bottom of the...
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    Mercruiser 2 beeps/minute alarm diagnosis Sherlock

    Okay here is one for Sherlock Holmes: I have a 2004 Mercruiser 5.0 MPI SN OW003759 with Bravo 3 SN OW108118. The two beeps per minute alarm is going off. Below are the facts of the case as I can best tell- 1) I can run the engine at 1800rpm for two hours (did it) with no alarm. 2) It only...
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