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    06 Mercruiser 5.0 MPI no power above 2000 rpm - thoughts?

    Good news to report - it's fixed and running like a champ. Must have been the plugs. Did new plugs and wires, and cleaned up the coil high tension lead which had a bunch of hardened grease. Compression also checked out fine at 140-160 on all, which is a nice feel-good. Thanks for the...
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    06 Mercruiser 5.0 MPI no power above 2000 rpm - thoughts?

    Thanks, I will take a closer look at the shift plate and see what plug I would want to pull as a test. Just got the plug and wires out and taking a break now it was easier than I expected once I was giving the engine a bear hug. Some updates: - Emptied (and replaced) the fuel separator, no...
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    06 Mercruiser 5.0 MPI no power above 2000 rpm - thoughts?

    Forgot to mention, checked a few other things: - Spark arrester is clean, I ran it with it removed and no difference - Voltage at speed is fine, 14.x volts - Distributor has a small amount of play, not sure what's "normal" but it's on my list to figure out how to check whether it's tight and...
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    06 Mercruiser 5.0 MPI no power above 2000 rpm - thoughts?

    Serial is 0W068727. Did the fuel pressure test and it's just fine, settles to ~40 at idle and rises to ~45 at speed. So no concern there. But a bit more update on the behavior: - I think I can feel roughness even as low as off idle and 1500 rpm. So more indication of ignition (or...
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    06 Mercruiser 5.0 MPI no power above 2000 rpm - thoughts?

    Hello all - At the lake with my 06 Sea Ray sterndrive bowrider 5.0 Alpha and rather suddenly isn't making power. Have owned it for a few years and it's not right. Starts and idles just fine, revs up in neutral and sounds great, but try to take it above 2000-2500 and it's not making power...
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    Help me ID my dad's old boats?

    I guess the boating thing must be in the genes. I bought my first boat this year, and I knew my dad had a couple of fishing boats but I didn't realize he had some cool runabouts when I was young and before I was born .... Mom just had some old slides scanned and we spotted these today. Can...
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    Best lakes with dock rental houses between NC and MI?

    Hi all - I grew up in MI and have lived in NC for 13 years. As a new boater I'm looking to combine my newfound boating hobby with family-friendly vacations and I find myself looking for good lakes to plan extended family vacations between MI and NC. After spending a lot of time viewing sat...
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    Do I need to prop up? Tuned engine exceeding MFR WOT recommendation

    Hi all, first time boat owner here and I'm happy to report that my tuning of the engine (and fixing a bunch of problems) has resulted in a screamer and I'm now exceeding my mfr recommended WOT RPM. Wondering if I should consider a prop change. This is a bit complicated since the boat is a 92...
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    Replacement engine has Vortec heads -- need to rejet Holley for increased airflow?

    I've been searching for info on this but haven't found anything... I have a 92 Sunbird, OMC 4.3 non-HO with stock 2bbl 500CFM Holley carb. Previous owner had the motor replaced with a 96 rebuilt longblock with Vortec heads. What if anything needs to be done to rejet the carb (and/or...
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    Performance falls off over the day ... expert troubleshooters needed (long!)

    Hi everyone, I'm having ongoing issues with engine performance on a new-to-me 92 Sunbird w/ a 1996 rebuild shortblock. OMC V6 4.3, electric fuel pump, Holley 2 bbl. Here's the problem that I've been chasing for a few weeks: Boat runs fantastic for the first 5 minutes or so. Gets to WOT RPM...
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    Starting problem - carb? 4.3OMC/Holley 2bbl

    Hi everyone, just spent the lat few hours reading posts about carb issues, but I'm still stumped by what my new-to-me boat has been doing. Last few times out I have had WOT issues, so today armed with a fuel pressure tester I hit the lake. First I went out with low fuel and a clear line on the...
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    Longshot request -- need rear trim panel for a 92 corsair 185

    Hi all, first time boat owner here with a 92 Sunbird Corsair 185 fixer-upper. I've been restoring the interior, and the boat is missing the rear upholstered panel that goes onto the back wall around the engine cover. It screws onto this wall, and has short red stripes in it which match the...
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