New motor is officially dead

[meatball]

So I go out to look under the hood of my ski. Background, its uncovered and I havent checked on it for about 2 months. When I open it up, its got water up to about half-way up the carburetor. I nearly shat myself. Batteries dead, battery cable are corroded and the motor I think has rust in it.

I really dont want this to be true, so Im asking you guys. I turned it over by hand and it went smooth for one stroke then on the second stroke I met resistance and heard grinding sounds. This is completely not normal and there is rust inside right?

Also whats the best way to go about and fix it as cheaply as possible? Should I get the crank rebuilt via SBT and can I reuse the pistons? Should I buy another motor and part this one out? Any other ideas? If someone wants to trade, Ill throw in cash and this motor for a working one with 200 or less hours on it.

 

[Boris]

Brand new, as in never fired ?

Pull the head and I bet there will be some surface rust on one of the cylinders. That's the sound you heard after the one stroke revolution.
Also, pull the flywheel cover and look for rust there.

I would pull the motor down and check it all out good. Maybe not all is lost.

 

[Motorheads5]

first of all get it out of the boat.Then pull the intake and exhaust manifold's so you can see inside the motor do not keep rolling it over, if you have rust in the cyl. it will ruin the piston's use lot's of wd-40 or a penetrating oil you need to get rid of all water and oil everything real good.You will probably need to pull the topend off because of this grinding sound you have heard.

 

[chrisdoc0608]

that sucks bro, hope it works out for you. The bright side is that 701s are selling cheap right now if you end up needing one.

 

[demolition_x]

bet you wish you installed a scupper huh?

j/k

lots of pb blaster to get it moving smoothly and your gonna have to tear it down to see what the crank looks like any ways.

take it apart and post some pics up.

 

[meatball]

It was brand new in the sense that it had 10 hours on it.

I still cant believe all that water got in there from those two tiny air vents! I didnt leave it that long, and there was a LOT of water. I would of never expected that, as I've left it uncovered most of its life and I've never seen anything close to this. Usually just a little water like 4 inches at the MOST. This was like 20 inches of water. I dont even remember it being that rainy!

So wait, am I getting the sense that even if there is rust in there it still may be usable? Or is that just wishful thinking. Im gonna tear it down and put up pictures as soon as weather cooperates. So are the pistons usually reusable? Im guessing the crank is lost, and the cylinders.

This isnt my mod ski either, so a scupper was never in the picture. I'm still not using one on it though, I dont want it to break.

 

[chrisdoc0608]

if your crank bearings are not rusted you should be ok.

 

[Motorheads5]

if your crank bearings are not rusted you should be ok.

Yep. The thing is you need to get right on it and remember as soon as you open it up and expose it to oxygen then that's when it will rust real fast be ready to oil everything up good.We have saved a couple of crank's that have 2 season's on them now.

 

[waterfreak]

take it completly apart asap!!! you may be able to salvage it by soaking the crank with oil

 

[DezKnotz]

i feel your pain bro iam in the middle of rebuilding my motor because of all the rust. the only diff is it is my mod ski:chairshot:

 

[OCD Solutions]

I have my build hull sitting outside right now and I am amazed at how much water it is collecting in the hull thru the two open bilge fitting holes, (located in the top corners of the tray), and the hole in the Pivot mount. I guess it pays to keep a cover on it for sun damage and water intrusion. I don't have a scupper nor do I plan on putting one in.

 

[Shifty]

When I first got into jetskis I got a 1996 Waveblaster for nearly nothing. Knowing it was damaged, I had plans to fix it. It had broken loose from someones dock during a storm and been banging around on a shoal for days. This thing was trashed, all kinds of delamination on the hull. Anyway the motor was full of water. It had sat for a about two months before I ended up getting it.

I pulled the motor down and and everthing checked out, I fugure there was so much water in the motor rust never realy took over. Just some crusty lake film on the crank, cylinders, and reeds, the stator area was dry. I soaked the crank in diesel, light steel wool on the cylinders. I ran that thing for years and recently sold it.

It could well be salvageable,

 

[rickmeoff]

I feel your pain. Mine has been sitting in the garage for 3 years, and although there's some rust...it's (hopefully) not enough to cause any damage once I run it this week. It starts ok, and runs strong with a hose...but until I get it in the water I can't be certain.

Test run Saturday.

 

[BBYamaha]

how about some pics...

 

[tor*p*do]

I keep my skis in the garage and still crank them up once a month
and then feed them fresh fogging oil all winter long.
I say it is to maintain them, but really I just HAVE to hear the BRAP
and smell the two stroke mid winter to keep from going stir crazy

 

[meatball]

well, I took it apart today, and the crank is rusty. Im pretty sure its a goner. There was water in the flywheel case too but not much and it looks ok. The water was up to the carburetor. Im just really pissed right now, I just bought the thing. Im buying a cover, right now. I still cant believe all the water got in there.

 

[tightithrash]

sucks man......

 

[meatball]

I just fully took it apart today. It was freshwater in it, so there is no rust on the pistons and topend. I took a second look at the crank, and the bearings actually dont look like theres any rust on them. I dont know why it was grinding before. There is rust on the crank webs though and the rods. Can anyone direct me to a good thread that explains how to get the pistons off and on?

 

[oxnard111]

I just fully took it apart today. It was freshwater in it, so there is no rust on the pistons and topend. I took a second look at the crank, and the bearings actually dont look like theres any rust on them. I dont know why it was grinding before. There is rust on the crank webs though and the rods. Can anyone direct me to a good thread that explains how to get the pistons off and on?

just use a tiny flat head screw driver to get the circle clips off both sides of the pistons, being careful they don't fling across the garage. Then push the piston pin out. It it is tough you can use a socket that is a bit smaller than the diameter of the pin and wack it out of the piston.

Don't know if this is the proper way to do it, but its the way I've disassembled many engines.

And soak everything in oil asap

 

[chrisdoc0608]

if the pin is really hard to remove you can get a pin remover from advance auto for cheap too