Got stuck last time out limped back at 4mph

[i_build]

Chevy 350 OMC Cobra drive. I was clipping along and opened her up a little and all of a sudden rpms shot up and she felt like it was in neutral. Brought the throttle back down to an idle and she was still moving gave it some more and it started to pick up but then started slipping bad again. There was no grinding, or no increase in temp. Is this what is called a "spun prop"? I was able to get back in after a few hours with a max speed of 4mph. The prop didnt hit anything... Could it just spin or could this be another issue?

 

[indy440]

Re: Got stuck last time out limped back at 4mph

bad prop hub most likely.

 

[Alpheus]

Re: Got stuck last time out limped back at 4mph

I'm thinking you may need to check the coupler.

 

[i_build]

Re: Got stuck last time out limped back at 4mph

I'm thinking you may need to check the coupler.

I read that if the coupler goes the temps shoot up... is that wrong?

 

[indy440]

Re: Got stuck last time out limped back at 4mph

if the driveshaft is not turning the waterpump is not turning. However, it was still turning some at low RPMs, so there was some water being pumped around. So it could still be the coupler, BUT the First thing I'd do is pull the prop off and see whats up!!!!

 

[bigdaddypt]

Re: Got stuck last time out limped back at 4mph

definitely the prop hub. exact same thing happened to me. did you notice any vibration in the boat when this happened?

 

[i_build]

Re: Got stuck last time out limped back at 4mph

definitely the prop hub. exact same thing happened to me. did you notice any vibration in the boat when this happened?

No it just came out of nowhere and happened in a split second. I'm going to pull the prop on Saturday and pray that its the problem.

 

[capecodder116]

Re: Got stuck last time out limped back at 4mph

Check the prop hub...

 

[stringariman]

Re: Got stuck last time out limped back at 4mph

Prop Hub. Just happened to me exactly as you described. I put another prop on and problem solved. Good luck