water blowing from bottom plug

[Orval]

70673D 1976 Evinrude 70 hp

Excited to try my rebuilt engine. Bored .030 over. new pisons , rings..gaskets..seals...
Cranked...started....died...

Thought the starter was bad (smoking from trying to start).
Took out the plugs and grounded the leads....mist of water....very definite....blowing from bottom plug...

Very bummed..

Anyone know what to do?

Thx

 

[racerone]

Sure it is water and not gasoline ?-----Did you inspect diaphragm on fuel pump ?----Did you replace the exhaust manifold gaskets ?-----Did you check that all surfaces on the exhaust manifold gaskets to be flat ?-----Your cylinder head was warped ( they all are ) and did you make sure it was flat

 

[Orval]

It was water.
fuel pump is new.
Replaced all manifold gaskets. I layed a metal straight edge across the plates, looked to me to be good.
The block was checked by a machine shop that bore it.

 

[Orval]

This is one of the problems I had before the rebuild..just not as bad.
I think you had told me on an earlier post that them plates can warp, so I double checked...to the best of my ability/knowledge .

Can the plates be bad?

 

[Orval]

For the 10 seconds that it was running...It sounded SO much better than before. I have another motor that I can take the plates from....should I?

 

[Bosunsmate]

check compression and if ok then pull exhaust plates and inspect

 

[oldboat1]

might resurface mating surfaces of the cylinder head and the head cover -- probably can reuse existing gaskets after inspecting. Check torque values and pattern, and reassemble.

 

[Orval]

will do
Can water enter the cylinder via the mounting gasket? The one between powerhead and lower unit?

 

[oldboat1]

could. seeing water in the pan?

more likely the head gasket.

 

[F_R]

Warped exhaust cover plates are all too common, and have destroyed many a motor. They warp in the exhaust port area because they are not supported on the other side.

 

[oldboat1]

^^yes. Exhaust plate ahead of head gasket. Compression test.

 

[Orval]

I took exhaust plates off and refaced mating surfaces. Reinstalled and was the same.

So I took gaskets and cut cork duplicates (I know they weren't going to stay in) and it solved the leak into the cylinders. So,,,I took out the cork and reinstalled gaskets with a gasket maker sealant to help ,,,I hope this works! In the process, my solenoid broke,,,literally. When the new solenoid gets here I will see if I got the plates to seal....and then do the compression check.

I know that there is a few more steps to get through, but I am really getting excited.

Thanks guys for your help.