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  #1  
Old 04-29-2015, 10:00 PM
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walterlaughlin walterlaughlin is offline
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Join Date: Oct 2012
Boat: 1995 Mastercraft Maristar 200 VRS
Location: NorCal
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Boat still leaking water, ugh!!

I have a 95 Maristar 200 VRS. The boat has leaked water since I bought it 3 years ago. It brings on a lot if water when plowing along at 10-15 mph. Doesn't seem to leak when parked, and doesn't seem to leak much when underway above planing speed. I took it to a local shop who ripped off the old rub rail, sealed the top and bottom caps with silicone and installed a new rub rail. The boat still leaks a considerable amount of water as shown in the pics of the motor compartment below (both sides). Mechanic says they sealed the rub rail completely so the water must be coming from somewhere else, like a crack in the hull. Any other theories as to where the water may be coming from, other than the rub rail? I know these boats are notorious for leaking so I know I'm not alone. Thx



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Old 04-29-2015, 11:19 PM
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Rossterman Rossterman is offline
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Boat: 2001 prostar 205V
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Some say fill bilge on the trailer and see where water comes out.
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Old 04-29-2015, 11:51 PM
Cain0725 Cain0725 is offline
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does it have hard tank ballast
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Old 04-30-2015, 12:31 AM
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walterlaughlin walterlaughlin is offline
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Boat: 1995 Mastercraft Maristar 200 VRS
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No ballast tanks
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  #5  
Old 04-30-2015, 02:04 AM
FrankSchwab FrankSchwab is offline
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Boat: 1998 Maristar 200VRS
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You're gonna have to look at all the hull penetrations - the shaft log, the exhaust flanges, the drain plugs, etc. Something's letting water in; if it isn't the hull/deck joint, it's gotta be one of the others.

Is the bilge filling with water? Perhaps your bilge pump is out.

/frank
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  #6  
Old 04-30-2015, 05:54 AM
mastercraft123 mastercraft123 is offline
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Join Date: Apr 2015
Boat: Mastercraft Prostar 1990 Indmar 351
Location: Northeast
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I had a small leak from the copper speedometer tubes mounted on both sides of my 1990 Mastercraft. A previous owner had not winterized the tubes and they were cracked and leaking water at both sides. In addition the original silicone seals for the speedo tubes were also leaking from the transom on my boat. Not sure if your boat has the same set-up but this is easy to check in addition to the reverse leak check. Good Luck !!
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  #7  
Old 04-30-2015, 06:23 AM
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paco_06 paco_06 is offline
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Boat: 1993 prostar 205/1985 stars&stripes
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You should have some type of vent back there for the blower. I know some have them on both sides. At 10-15 mph the bow should be way up and the transom down. Only thing I can think of for water getting in that high.
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Old 04-30-2015, 06:41 AM
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damaged442 damaged442 is offline
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Boat: 1989 Tristar 190, Indmar 351, 250HP
Location: Central NY
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It can leak from the speedometer tubes, but you would have to be driving a long time to get that much water from that.

Did you check to see if all your exhaust piping is tight? My buddy's 94 225VRS had a clamp loosen from the muffler and next thing you know, we have a LOT of excess water in the boat. Also check for cracks in the fiberglass in the mufflers or splits in the exhaust piping. Other than that, it could be where your driveshaft or rudder penetrates the hull.

Can't think of anything else that would bring that much water other than a big hole in the hull, that I'm sure you would have seen when you got the rubrail redone.

Good luck!!
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Old 04-30-2015, 08:05 AM
04 Star Rider 04 Star Rider is offline
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Just thinking out loud, but I would recreate the problem and feel if the water is warm or cold. that would give you an idea of where it might be coming from. Also, at 10-15 I would think that you could safely have someone drive the boat while you hold the hatch open and see if you can see anything
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Old 04-30-2015, 09:03 AM
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mikeg205 mikeg205 is offline
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I bet not sealed properly.. Traxxx here had the same problem.. the rub rail on that boat goes way low at stern. Remove sun deck, and side panels in the stern and do a run at 10-15. At 15 mph that rail is running against the water.
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