vector4
Member
Just wanted to run this by you guys. Bought the boat last June, it's a 2000 270DA widebody single 7.4L MPI with B3. Boat ran fine, then about 3 months later in Sept had issues. Would start to come up on plane and then just sink back into the water. Almost felt like a spun prop hub, it's just like there was no bite in the water or power to get it up. I could go WOT and do some drastic weight shifting and get it to plane off but to keep cruising speed I really had to give it way too much throttle.
So B3's are solid hub so it's not that, pulled the props (24p) and compared to another set I have, they aren't bent. I thought maybe fuel issue so I change the fuel filter and cleaned the flame arrestor. Engine sounded a lot peppier after that so I was pleased until it did the exact same thing. And it does it from what I can tell at the exact same point each time.
Now... I am bottom painted with ablative paint. I left it in a wet slip all summer and when I pulled it the bottom was covered with 1/4" layer of algae. The lake I had the boat in was tiny and I idled out or maybe cruised for 5-10 min max. So I don't think I ran it enough for the paint to scrub itself off. It started peeling and I scrubbed the top layer with the algae off this winter so the bottom is fresh now.
So I got to thinking maybe that layer of algae was causing this and making the hull drag so much I couldn't get up on plane.
If that's not it my options are plugs, cap and rotor next. Then maybe I have a leaking manifold that's letting water in and killing engine power once I hit 3k+ rpms? Engine idles fine and rev's in neutral fine. I need to pony up for a techmate...
I'll get it figured out but thought I'd see if the story jived with anyone.
So B3's are solid hub so it's not that, pulled the props (24p) and compared to another set I have, they aren't bent. I thought maybe fuel issue so I change the fuel filter and cleaned the flame arrestor. Engine sounded a lot peppier after that so I was pleased until it did the exact same thing. And it does it from what I can tell at the exact same point each time.
Now... I am bottom painted with ablative paint. I left it in a wet slip all summer and when I pulled it the bottom was covered with 1/4" layer of algae. The lake I had the boat in was tiny and I idled out or maybe cruised for 5-10 min max. So I don't think I ran it enough for the paint to scrub itself off. It started peeling and I scrubbed the top layer with the algae off this winter so the bottom is fresh now.
So I got to thinking maybe that layer of algae was causing this and making the hull drag so much I couldn't get up on plane.
If that's not it my options are plugs, cap and rotor next. Then maybe I have a leaking manifold that's letting water in and killing engine power once I hit 3k+ rpms? Engine idles fine and rev's in neutral fine. I need to pony up for a techmate...
I'll get it figured out but thought I'd see if the story jived with anyone.