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    Loud tapping noise when accelarating under load 3k rpm

    Yep already done this, replaced gimbal and greased U-joints.
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    Loud tapping noise when accelarating under load 3k rpm

    Alldodge what is the reason for shunting the engine? I can't seem to fully grasp the concept. From research when using the shunt tool this takes the timing to 0' however on removing the tool this puts it back to what it was? So what happens here plug the tool in then advance the timing to 8' on...
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    Loud tapping noise when accelarating under load 3k rpm

    interesting, ok thanks will see how I get on with this.
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    Loud tapping noise when accelarating under load 3k rpm

    The part I'm not following is how would the shunt tool reset the points to 0" timing? As this is all mechanical how's that possible?
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    Loud tapping noise when accelarating under load 3k rpm

    Found a really good video for the 3.0 timing:
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    Loud tapping noise when accelarating under load 3k rpm

    Never timed an engine like this, only a car engine from replacing a cambelt but that was easy due to an ECU and fuel injection. Not too sure where to start.
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    Loud tapping noise when accelarating under load 3k rpm

    Adding more info here, spark plugs were black in colour
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    Loud tapping noise when accelarating under load 3k rpm

    Thanks alldodge for confirming this is all starting to point towards timing. Is it possible to use any timing light to perform this? Any good guides you know of? Thanks
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    Loud tapping noise when accelarating under load 3k rpm

    To add to this, the engine runs on only for a very short time, but worth mentioning.
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    Loud tapping noise when accelarating under load 3k rpm

    Hi all, Volvo Penta 3.0 GSC-P 250 hours 20 years old making a noise deep in the engine around 3k rpm worse under load at sea. So far replaced or checked, U-joints Gimbal Raw water pump Circulation pump Rebuilt carb I wrote this thread last year...
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    Maintenance on 20 year old VP 3.0 inboard.

    Forgot to mention risers and exhaust manifold/cooler replaced last year too.
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    Is this raw water pump serviceable?

    If I were to repair this pump, what's everyone's thoughts on the wear and tear as to the area the impeller sits, should it do any damage spinning away?
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    Is this raw water pump serviceable?

    VAT on everything in the UK!
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    Is this raw water pump serviceable?

    Thanks Scott, looked at these but they're similar not quite the same.
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    Maintenance on 20 year old VP 3.0 inboard.

    Always, this is just standard winterization/yearly maintenance. I'm going down the route of preventive maintenance for a 20 year old boat so that I'm not stranded somewhere next season.
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    Maintenance on 20 year old VP 3.0 inboard.

    Hi, My boat and engine is turning 20 years old and I wondered if I should change, repair, replace anything in particular. Or as my gramps keeps telling me - if it aint broke don't fix it. Boat is 3.0 4 cylinder inboard volvo penta SX-M leg with 250 hours salt water use. I've replaced in the...
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    5.0 GXi 2007 Metallic noise

    check raw water pump, mine sounded like this turned out to be the bearing had gone. GL.
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    Is this raw water pump serviceable?

    fair points, it's a little more expensive in the UK than 200 bucks unfortunately - it's £430. I suppose I could purchase from china for around £100 Repair kit is circa £35 - I was going to use a socket to tap the bearing back in.
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    Is this raw water pump serviceable?

    I'm surprised it's conclusive for a new pump - I thought you American's always fixed something than replacing 'if it aint broke, don't fix it'.
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    Glastron contact details?

    I contacted them and had a response, they suggested they've very much still in business - whatever that means exactly, who knows.
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