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    VP 5.7GXi-HF fuel pressure

    Having recently cleaned the fuel injectors (and changed the o-rings), I was testing today to inspect for leaks. I hooked up a gauge to the high-pressure side on the fuel rail and turned the key to the on position without starting the engine. The pressure jumped instantly to the expected 50psi...
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    Bellows adhesive or not?

    From my VP Workshop Manual AC 2(2) from 2003, on page 43: "Coat the outside surface of the gimbal bearing bore with Volvo Penta Gasket Sealing Compound. Sealer is not required on the outside of the exhaust opening." and page 61: "Apply Volvo Penta Gasket Sealing Compound around the complete...
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    Just rebuilt the trim cylinders, now the outdrive won't stay up under load

    My guess: Could be the piston seals in the cylinders or the return valve in the pump, probably the former since everything worked prior to the rebuild. That is assuming you have no leaks externally. There's a guy called Michael Romer on youtube who has some videos on how to test for leaky...
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    Seeking advice regarding Volvo Penta 5.7GXi-HF fuel pump whine

    I've already removed all the paint from the fuel cell interior.
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    Seeking advice regarding Volvo Penta 5.7GXi-HF fuel pump whine

    Revisiting an old thread as another season draws to a close. The fuel pump is still whining and still working. I had the idea of unplugging the electrical connectors for the pumps with the engine running in an attempt to determine if it's the low-pressure or high-pressure (or both) which is...
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    DIY trim sender repair using a 500 ohm potentiometer

    Good info, thanks for sharing!
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    Engine over heats

    Does your power steering cooler have an extra hose barb blocked off by a rubber cap held on by a hose clamp? Could be a potential for a leak.
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    Flushing raw water side of 5.7GXi-HF

    Correct. Do you see any problems with the setup I described in my original posting?
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    Flushing raw water side of 5.7GXi-HF

    That is a good suggestion and a good way to descale the heat exchanger and the bottom half of the raw water cooling circuit. However, I wanted to get some circulation on this in order to also clean the passages of the exhaust manifold and risers as well as the fuel cell.
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    Flushing raw water side of 5.7GXi-HF

    Raw water cooled with heat exchanger so the block is fresh water cooled.
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    Flushing raw water side of 5.7GXi-HF

    Sorry, my mistake, I meant the entire outdrive. There is a threaded fitting on the gimbal housing where the hose feeds raw water through the transom, thought I’d connect my flush hose there.
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    Flushing raw water side of 5.7GXi-HF

    I have been known to do this from time to time… Thanks for settling my concern
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    Flushing raw water side of 5.7GXi-HF

    It's a descaling agent meant to remove marine growth etc
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    Flushing raw water side of 5.7GXi-HF

    Thanks for your input. I would be doing this as a part of winterizing the boat so the lower unit is coming off regardless. This being a freshwater cooled engine, the flushing is for the heat exchanger, exhaust manifolds/risers and fuel pump. Is my concern for the risers unfounded? I would think...
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    Flushing raw water side of 5.7GXi-HF

    I want to flush the raw water side of my 2007 5.7GXi-HF with Rydlyme or something similar. The drive is a DP-SM. In order to do this, I had the idea of removing the lower unit, connect one end of a hose to the threaded fitting on the the gimbal housing and the other end to a ciculating pump...
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    Water in bilge while on muffs

    I would check the and tighten the hose clamp labelled as part no 5 in the drawing posted by Donald0039 in post #4.
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    Help transom leaking

    That’s the hose for the raw water to enter through the transom in to the power steering cooler. I also have a small leak on the transom end of this hose, only when engine is off as the suction from the impeller will not allow water to leak when running. Water will drip from the hose barb onto...
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    Grease tube on VP DP-SM, fitting striped

    Good point sir!
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    Grease tube on VP DP-SM, fitting striped

    Do you really need to seal both holes? The hole for the gimbal bearing housing of course, yes, but there's water on both sides of the other hole (the one for the grease fitting).
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    Grease tube on VP DP-SM, fitting striped

    I’m going this route as of this season. Grease fitting and tube is still in place, but bearing is non-greasable. In this case I would look for a way to seal the grease port somehow. I remember seeing someone remove the tube, tap the hole in the bearing carrier and put a screw in. Might have...
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