No exhaust water stbd engine

[Chasemmc]

Fired up the 8v92ti's today. Both started, albiet with the crossover switch with little smoke. Port pumping out fine, starboard dry as a bone.

Replaced the impellors 6 months ago, have about 5 hours on them.

How would i go about diagnosing what is wrong?

Thx
Mark

[Pascal]

First thing i d check would be the impeller Just pull the cover and check it out without removing it unless you see missing blades

Could be the strainer but I find it to be rarely the case

And make sure the intake hose isn't loose. Rare but you never know.

[dottieshusband]

Fired up the 8v92ti's today. Both started, albiet with the crossover switch with little smoke. Port pumping out fine, starboard dry as a bone.

Replaced the impellors 6 months ago, have about 5 hours on them.

How would i go about diagnosing what is wrong?

Thx
Mark

Kinda a go look suggestion....check the intake screen and valve, take the back cover off the raw water pump and look at the back of the impeller....checking for blades and splines, could be the intake under the boat.

[Avenger]

Without being a smart@$$... Did you open the seacock?

[Chasemmc]

Never closed it.

Where is the strainer on the exchanger?

I so need a boat buddie. I'd ask Randy but but he'd make me beg. How humiliating would that be....😨

[yvella]

After a raw water rebuild i found the P.O had his guys replace impeller and they neglected to look for the missing pieces of impeller vanes I found alot of the pieces blocking the passage to discharge. Found same issue in the raw water pump on generator.

[racclarkson@gmail.com]

Since it ran dry, pull the impeller. I think you have to pull it to make sure the vaned all spring back. If it looks good, grease it. With the impeller out, take a hose and backfill the line from the pump down to the intake. Maybe it just needs a little encouragement to catch prime. If that doesn't get it I'll bet you have a bag or some such trapped in the screen.

[SEVEN]

Check the intake. Even though there may be water in it there may be an obstruction prior to the impeller. However I've seen impellers go out with hours of install. You say you didn't close the seacock, you should have taken on tons of water with it open. Was that the case? If not go to my first comment. Good luck

[Andy B]

The zincs can corrode make a mess and block the heat exchanger if left sitting for awhile, or if the cover plate is heavily worn the pump will have a hard time priming, and of course check to see if water is even getting in the boat strainer obstructed, thru hull etc.

[BOATER BOB]

Check the wear plate behind impeller cam and cover for wear on some pumps you can turn cover over and use.
Bob