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Vessel Info: 2004 29 open, crusaders
when I accelerate the throttle I get a whining noise which seems to come form the front of the engine. No noise at idle and I dont have to be in gear for noise to start. Not sure what it ca be, Any ideas? Belts are tight.
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Home Port: Ashtabula, OH
Vessel Info: 1986 Tiara 3600 Open, Crusader 454's
07-07-2020, 07:38 AM
(This post was last modified: 07-07-2020, 08:38 AM by Misdirection.)
It would be helpful to know what boat, motors, and transmissions you have to try and help you out.
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Home Port: South haven,mi
Vessel Info: 2006 3200 0pen 8.1 crusaders
If you have 8.1s there is a very distinct intake whistle that occurs as you come up on plane it's caused by the air flow through the throttle body and can be remedied by installing a thin plate between the throttle body and intake manifold. This plate has a small finger that protrudes into the air stream and slightly changes the air flow which cancels out the whistle. They are available through any crusader dealer.
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Check to see if the belts are rubbing against the flame arrestor (also look for belt dust on the hatch).
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Home Port: Port Canaveral, FL
Vessel Info: 2003 Tiara 50 Open
3406E Cats
Are they diesels? Turbos whine!
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Profile says they have a 2004 29 Open w/Crusaders.
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Sorry should have given more info. They are crusader 5.7 gas engines. I removed the belt and ran engine for a few seconds and no whine. I think this rules out transmission pump and fuel pumps. Seems to be coming from front of engine, so could be one of the pumps, raw and fresh water. Alternator? I was going to change out tensioner as a start. Has anyone had a whine from the tensioner? Belts were tight. Noise just started last trip.
Thanks all....
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Feel for any pulleys that may be loose. if there is any play in them there's your culprit. Alternators are known to whine some when the bearings are going bad.
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I changed the belt tensioner pulley. Seems to have the done the trick...thanks all
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Home Port: Chester MD
Vessel Info: 2006 47' Tiara
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sounds like turbos spooling up to me.......
