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New Member
- Feb 13, 2012
- 843
- Boat Info
- 2000 310 Sundancer
1997 175BR
- Engines
- 310: Twin 454 Mercruiser w/Bravo III
175: Mercruiser 3.0
I'm on my first real cruise, and I've noticed that my starboard engine sometimes doesn't seem to have a lot of "grunt". I'm in a 2000 310 with twin 7.4's.
After about an hour of cruising at around 3200 RPM, I noticed that my speed was falling off. Revs were down a bit, so I gave it a little more throttle. The port engine responded as expected, but starboard didn't change right away. It seems as if once the port engine gets up to speed, the starboard starts creeping up, never quite matching the rev's. Even giving the starboard more throttle doesn't help. Once it gets to around 3K, it poops out unless I goose the port engine.
Other times, it seems to work fine, with both engines keeping pace and responding to the throttle smoothly.
Oil pressure and engine temps are fine during all this, and I did check the temps with an IR thermometer just in case, and nothing seemed out of line. One thing I noticed is that the starboard intake makes much more of a "scream" than the port when I'm running with the hatch open. It is a VERY noticeable difference. Could it be as simple as a semi-clogged flame arrestor?
One other item - getting on plane seems to be more of an effort than I expected. I really can't get it there until I pass 3K RPM, and it really feels as if the boat is "dragging", but I don't have enough experience with this size boat to know if this is normal or not.
After about an hour of cruising at around 3200 RPM, I noticed that my speed was falling off. Revs were down a bit, so I gave it a little more throttle. The port engine responded as expected, but starboard didn't change right away. It seems as if once the port engine gets up to speed, the starboard starts creeping up, never quite matching the rev's. Even giving the starboard more throttle doesn't help. Once it gets to around 3K, it poops out unless I goose the port engine.
Other times, it seems to work fine, with both engines keeping pace and responding to the throttle smoothly.
Oil pressure and engine temps are fine during all this, and I did check the temps with an IR thermometer just in case, and nothing seemed out of line. One thing I noticed is that the starboard intake makes much more of a "scream" than the port when I'm running with the hatch open. It is a VERY noticeable difference. Could it be as simple as a semi-clogged flame arrestor?
One other item - getting on plane seems to be more of an effort than I expected. I really can't get it there until I pass 3K RPM, and it really feels as if the boat is "dragging", but I don't have enough experience with this size boat to know if this is normal or not.