2001 340 Sundancer, twin 6.2 Liter...
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09-11-2016 07:44 AM
2001 340 Sundancer, twin 6.2 Liter MPI, 377 CID, Mercruiser with Vortec heads, Inboard, V-Drive
Mystery RPM problem that's been looked at for two months by two or more reputable mechanics
WOT should be 4500 range
Boat Cruises at 3600 RPM with no problem
added speed between 3600-3800 RPM
However, when throttles pushed to the final 1/3 to max throttle, NOTHING
No add'l response to get past 3800 RPM, no changes to boat since prior to loss of power.
All of the usual have been tested;
Engine RPM's fine out of water
Fuel pressure, good
fuel, good
props unchanged from prior to issue
timing/firing, good
compression, good
hull, clean, no growth
boat weight, normal, no excess water/cargo
Mechanics are frustrated as they don't have further suggestions as to where the missing 700-800 RPM is going?
Any prior experiences, thoughts or comments would be appreciated.
-Guy
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09-11-2016 08:02 AM
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09-11-2016 01:41 PM
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09-12-2016 05:46 AM
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09-12-2016 09:51 AM
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09-12-2016 09:52 AM
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09-18-2016 08:12 AM
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10-09-2016 04:56 PM
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11-06-2016 12:36 PM
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11-06-2016 02:54 PM
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12-14-2016 12:39 PM
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01-27-2017 02:22 PM