pilot2fly
New Member
- Mar 10, 2014
- 103
- Boat Info
- 2001 290 Sundancer
- Engines
- Twin 5.0L Mercruisers with Bravo III drives
So we've been noticing lately that its been really hard to get up on plane without putting one or two people at the front of the boat. I took some readings on the tach and at WOT my port engine RPM's are 3200 and my starboard is 3300. When we went back and looked at the marine survey we got done before we bought the boat in March, it maxed out at 4400 rpm's and 41 MPH. I can only get it to 31.5 MPH at WOT, even when I experiment with the trim tabs. We noticed yesterday there is barnacle growth on the trim tabs, but we don't believe there are barnacles anywhere else on the boat (needs further inspection to be sure). I'm thinking that might have something to do with it, but would it cause a near 1000 rpm loss? There also seems to be a thin layer of gunk on the bottom of the boat from sitting in the water all the time.
One thing I read on here is that bad ignition coils could contribute. We had a bad one on the starboard engine last month and replaced it immediately. Port engine ignition coil hasn't been changed, since it didn't give us any trouble. The fuel lines are a little kinked as well.
We do keep the boat in salt water near Wrightsville Beach, NC, but the previous owner bottom painted it just before we purchased it in mid-March. We always try to take a scrub brush and brush off any gunk on the bottom when we go and anchor out, but its hard to get it all off when the boat is in the water all the time.
Any ideas? Happy to give more info if needed.
One thing I read on here is that bad ignition coils could contribute. We had a bad one on the starboard engine last month and replaced it immediately. Port engine ignition coil hasn't been changed, since it didn't give us any trouble. The fuel lines are a little kinked as well.
We do keep the boat in salt water near Wrightsville Beach, NC, but the previous owner bottom painted it just before we purchased it in mid-March. We always try to take a scrub brush and brush off any gunk on the bottom when we go and anchor out, but its hard to get it all off when the boat is in the water all the time.
Any ideas? Happy to give more info if needed.
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