Engine damage after rollover

[Mekanix]

Working on two machines with blow engines from rollovers.

First one snapped timing chain.
Second one had water in the oil and seized.

Found that the first one had oil in the intake manifold.

Second one somehow water got in.

Not sure what happened or how long they were upside down.
But what would cause this to happen in the first place and what is the proper aftercare for a machine just righted ?
Should it not even be attempted to start or idled home or....
Looking for a good procedure to tell people to avoid this happening.

 

[skiasylum]

Rollovers in the water? also called capsized watercraft. There is a special procedures subsection in my service manual that explains what is what and what to do regarding submerged and capsized watercraft.

 

[skiasylum]

Mainly if you capsize it on the water and it stays capsized for more than 5 minutes it’s considered a “water flooded engine” and should not be restarted until exhaust is drained and it has been determined there is no water present in the intake manifold or oil.

 

[Mekanix]

Ok the reason I'm asking is because from time to time I work on machines for a rental company and it really boggles my mind the amount of damage people do to these machines. So I'm wondering what could we tell people to do when they capsize a machine. Because I believe what happened is people capsized the machine and took a long time to write it and then when they did get it running and rushed back to the docking station that they end up blowing the motor.

 

[Mekanix]

If I could get to the machine before it was ran I think I could save it but I m usually called in when it's too late.

 

[skiasylum]

Any friend or family member that drives one my skis is required a 10 or 15 minute checkout of the ski including a static capsize of the ski and then being able to right it in a reasonable amount of time. 5 minutes. This is not only for damage control but for my peace of mind they can get back to the dock safely.

 

[greenhornet2]

They need to get up upright in under 5 minutes, shouldn't take more than a minute really. then they start and run it low speed for 5 minutes to get the water out. if its capsized over 5 minutes they need a tow in and not attempt to restart. it's in the owners manuals

 

[mikidymac]

If it’s rolled the wrong way and/or there is water in the bilge the time doesn’t matter. Cranking with water in the intake or engine at any time interval is bad.

 

[skiasylum]

If it’s rolled the wrong way and/or there is water in the bilge the time doesn’t matter. Cranking with water in the intake or engine at any time interval is bad.

Reboarding a Capsized PWC and the PWC Righting Decal | | Boat Ed.com™

 

[benjilafouine]

On my new GTI there is no good way or wrong way anymore. Only the 5 minutes rule applies. My manual applied to GTS, GTI, GTR and WAKE series.

 

[Mekanix]

Thanks guys. I'm putting together a placard to put on the machines saying if they roll it that they should upright it and call for help.
It's the safest thing I can recomend. I'm getting tired of pulling engines...

 

[mikidymac]

On my new GTI there is no good way or wrong way anymore. Only the 5 minutes rule applies. My manual applied to GTS, GTI, GTR and WAKE series.

I understand that is what the manual is saying but how does 5 minutes, 1 minute or 60 minutes matter if there is water in the intake and/or exhaust. If it gets into the cylinders and you crank it on a 4-stroke you are going to damage the engine is what I am saying.

If it was mine and I suspected water got into tit I would not crank it until I pullet the plugs and cranked just to be sure. 5 minutes of pulling plugs and verifying is much better than bending a rod.

 

[Mekanix]

I'm now of the mindset now that if it flips it shouldn't be ran.

I just cleaned out an intake on the shelf from a machine flipped 2 years ago.
Had to turn the intake over and over to get all the water out.