350 MAG Bent crankshaft?

[Mauro Brisola]

My 2013 350 MAG has 172 hours now. About 50 hours ago had water ingestion after a sudden deceleration. Engine stalled. It was not possible to turn engine because hydrolock. After removing spark plugs and drying cylinders by turning engine with starter it started again normally. Runs smoth, normal fuel consumption.

Some days ago watching engine working I noticed the crankshaft pulley turning unbalanced. Not so much but abnormal. And there is some engine oil leaking to bilge. It's not so easy to look for the leaking spot because the small size of my 26 foot cruiser engine bay. I'll try using a mirror.

But connecting the dots I suppose the crankshaft front end could be bent, what damaged the crank front seal. Would it be possible after a hydrolock in these engines?

 

[NHGuy]

Possibly, But maybe you just need to reseat the balancer. Gotta try checking.

 

[Scott Danforth]

Pull the balancer and put a dial indicator on the crank snout. That will tell you if its bent. Most likely your damper is shot. If thats the case, toss the damper and replace

 

[Bt Doctur]

I think your going to find the crankshaft broken under the #1 bearing cap.I know it sounds impossable but I had one doing the same thing at 32 hours after a rebuild.
Motor would run but the pulley and balancer would wobble . Swore to the owner that could not happen because there are 3 bolts and a nose bolt holding everything together. Well during disassembly the front of the crank fell off the motor