Engine does not seem to be pulling in water from muffs

[Donald0039]

Had not been to be that in awhile and so I connected the muffs and turned on the water and as normal water shots out from the muff rubber part touching the outdrive. Then started the engine. Normally with the engine running only a little water comes out from around the muff rubber part. This time did not seem a difference engine running or not.

Little or no water coming out of where I expect to see water with exhaust.

I/O is a VP DPA- OXI.

Engine is a 2012 V8 5.7L with closed cooling.

I guess I will come back and pull the raw water impeller.
Maybe connect garden hose direct to engine port.

Will the raw water impeller vanes flip when engine is started if I somehow got them pointing the wrong direction last time I installed new raw water pump?

 

[alldodge]

If blades are facing the wrong direction when installed there is a good possibility that the blades will be damaged, only way to know is look.

Also if you removed the pump and hoses, make sure hoses went back on in correct order

 

[Donald0039]

If blades are facing the wrong direction when installed there is a good possibility that the blades will be damaged, only way to know is look.

Also if you removed the pump and hoses, make sure hoses went back on in correct order

So looking at the pump on the engine the vane at 12 o'clock should curl to the left or right. This is normal rotation engine.

I am pretty sure the hoses are slightly different diameters and so cannot be reversed. But how to check?

 

[alldodge]

Normal rotation is left hand at the flywheel
Which means when look at face of the motor it turns to the right (clockwise)

 

[Donald0039]

Normal rotation is left hand at the flywheel
Which means when look at face of the motor it turns to the right (clockwise)

From my reading the vanes will flip if installed with the vanes curling in the wrong direction.

And the hoses on my raw water pump are different diameters so they cannot be swapped.

 

[Scott Danforth]

Do you have the bottom hole plugged?

Turn the water on full. Should spray 10 ft out of the muffs until the motor starts

Should only come out the idle relief ports

 

[Donald0039]

Here is the raw water pump looking at the inside. I believe it's a clockwise engine rotation so the impeller find that are really bent are bent in the right direction. Anyone see anything wrong? The impeller I think was put in backwards as the threaded portion should be facing out so you can use the impeller puller tool.

Again there in not a cover that goes on what you are looking at, this is the cover.

 

[alldodge]

Things look good
Being a VP check the fitting on the outdrive, it's plastic and can Crack.

Could put a short piece of clear hose between pump and thermostat to see if bubbles are seen

 

[Donald0039]

Things look good
Being a VP check the fitting on the outdrive, it's plastic and can Crack.

Could put a short piece of clear hose between pump and thermostat to see if bubbles are seen

Is this fitting under the cover I would take off to get at the shift cable?

 

[alldodge]

Yes that's my understanding, @Scott Danforth mentions the fitting quite often

 

[Donald0039]

If I run the engine with a garden hose supplying water to the flush adapter at the front of the engine, that won't suck in air if the plastic fitting previously mentioned is cracked?

 

[alldodge]

It needs to be in the water for the bubbles test. A hose will bring in it's on bubbles

 

[Donald0039]

Is this true? Was not aware.

Uncovered Auxiliary Water Pickup (Most Common)

Volvo Penta sterndrives, particularly the DPS-A and OceanX models, feature a secondary water intake hole located on the very bottom of the lower gearcase, just forward of the propeller. If you place standard muffs over the side intake grilles without blocking this bottom hole, the engine-mounted raw water pump will simply suck air through the bottom of the drive instead of pulling water from your hose. Before starting, tightly seal the bottom pickup hole with heavy-duty duct tape. You can verify this step was successful if a solid, steady stream of water begins discharging from the exhaust ports shortly after starting the engine.

 

[alldodge]

Yes, sorry but I made an assumption that folks know to close the water ports that are not covered by the muffs

If your issue only happens when on a hose than this would be your issue. Put some duct tape over the forward holes