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Old 07-20-2009, 08:39 PM
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Put same message up in general discussion. I have an '03 33 w/ twin 496HO & Bravo 1 X. Yesterday, cruising along at approx. 4000 rpm's in flat water. All of a sudden alarms so I immediately shut them down. All temps normal and fluids are fine. Start up again no alarm but rattling noise near transom even in neutral. Limped back home for 1 + hrs on 1 engine. Started other engine up a couple of times still ratling then I put it in gear and shut it down. Now stuck in forward so I can't even start it. I'm back on the lift. Any ideas? TIA
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Old 07-20-2009, 09:25 PM
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Sounds like a broken outdrive.
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Old 07-21-2009, 01:15 PM
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Even when your controls are in neutral, the drive shaft is rotating inside the upper of the drive. This is why it rattles even in neutral. The shifting/clutch mechanism is in the upper rear portion of the drive.

You can pop the top and/or rear caps off of the drive and peer inside. I bet you will see carnage. You have more than likely blown the upper and/or clutch. Do NOT run it anymore.
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Old 07-21-2009, 10:04 PM
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Originally Posted by Sydwayz View Post
Even when your controls are in neutral, the drive shaft is rotating inside the upper of the drive. This is why it rattles even in neutral. The shifting/clutch mechanism is in the upper rear portion of the drive.

You can pop the top and/or rear caps off of the drive and peer inside. I bet you will see carnage. You have more than likely blown the upper and/or clutch. Do NOT run it anymore.
Yikes. Can't start it in gear so I wouldn't even think of trying to run it. Biting my nails waiting for mechanic to come out to the lift. Hoping it can be fixed w/o having to try to pull it out on 1 engine. At low tide, I only have about 3 ft of water but don't know whether drive could be pulled out while on lift. Does anyone know if the Merc extended warranty is 1 + 5 yrs or + 4 yrs? If +5 I'd be 1 month out of warranty. Doesn't look like I'm going to get a quick & easy fix at this point, huh?
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Old 07-21-2009, 10:38 PM
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Likely the drive. you could have broken the driveshaft/u-joint among other things. Absolutely don't try to start the engine. I would plan on a new drive though.
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Old 07-22-2009, 06:09 AM
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Sounds like top gear set in the drive. I had the same scenario with my 25 Outlaw.
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Old 07-22-2009, 10:09 AM
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You have a broken upper. Easy fix, but plan on spending a few grand. I think upper gear sets are $1500 or so. Tear the entire drive apart & wash out/replace all the bearings. Cheap insurance. Trust me. I break drives at least once a season.
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Old 07-22-2009, 01:02 PM
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I would be willing to bet it is the port drive upper too.
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Old 07-22-2009, 09:12 PM
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The verdict is in. Either broken shaft or u joint in the upper case. Mech called Mercruiser who told him tough luck as I'm 3 weeks out of extended warranty. 130 babied hours, not a single claim in 6 years and meticulous service and I get a tough luck. I called Merc myself and asked, begged, etc...and still got a tough. BS. They can
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