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    Mercruiser 383 Mag Stroker MPFI Bogs Over 3000 rpm

    So many times people don't follow up on how they actually overcame their problem. I gave up randomly changing parts. I had many suggestions -- some good and some no so good -- but I followed and did most of what I could. Finally I decided that without some help from a real mechanic familiar...
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    Mercruiser 383 Mag Stroker MPFI Bogs Over 3000 rpm

    So now I have replaced the distributor cap which turned out to be a pain. The "ear" closest to the manifold on the lower portion of the distributor that holds the cap on cracked when I was unscrewing the cap. Had to improvise with JB Weld to make a new screw hole. Will probably have to invest...
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    Mercruiser 383 Mag Stroker MPFI Bogs Over 3000 rpm

    This is now and has always been a saltwater boat. The original owner repowered it in 2019 with a new OEM: MCM MX 6.2 Stroker replacing the 7.4 that was the original engine. I have already ordered a new distributor cap and plugs. I have also installed a fresh water flush system using all the...
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    Mercruiser 383 Mag Stroker MPFI Bogs Over 3000 rpm

    Thank you for your input. After this neutral safety switch test this afternoon, I pulled the rear two spark plugs on the port side based on kenny nunez's gracious response about his bad spark plugs. The two I pulled looked fine for wear (though I plan to replace them anyway) but they look like...
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    Mercruiser 383 Mag Stroker MPFI Bogs Over 3000 rpm

    Well, the neutral safety switch is apparently not my problem. I unplugged the switch, put a multimeter on the leads and it measured closed (as the label on the switch said it was NC). Then I went to the helm and put the throttle full over. Immediately as FWD is engaged, the switch shows open...
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    Mercruiser 383 Mag Stroker MPFI Bogs Over 3000 rpm

    Wow. Thanks. I have replaced both the cables and adjusted them for shifting properly. I think my project is next to work on looking for the switch and seeing what I can find. Thanks again. I'm pulling my hair out.
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    Mercruiser 383 Mag Stroker MPFI Bogs Over 3000 rpm

    New member. I could use some direction. I bought a 1999 Cobalt 233 with a 2019 Merc 383 Stroker Engine and have been working through deferred maintenance issues. The last one is the engine bogs down over 3000 rpm. I checked the tank vent (OK), the tanks is clean, the screen intake is clean...
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    Learning on a Bravo 3

    What I'm learning with my 1999 Bravo 3 is that cable adjustments are CRITICAL for the thing to work properly. That is both the helm cable and the control cable into the drive. (I found that the helm cable had stretched and took a lot of adjustment to get it right) I replaced the control cable...
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