I think i need a new engine

[polcat1p]

I have a honda gx390. last time i tried to star it it would run for 5 sec. then quit. I thought it was the carb, but as i was changing the oil it looked like water was in there(milky looking). I did a comp. test and it was about 50psi. Is that to low? Does my engine have a gov? is it the plastic gear in the side case? the cylinder was still have the cross marks, and i dont see any scores. Can i get by with rings, or should i get a clone 13hp? I want to stick with a 13hp because i have exhaust, filter, ect for it.
thanks

 

[Russ2251]

Engine has compression release. Testing it with gauge will not accurately reflect actual psi.

Does my engine have a gov? is it the plastic gear in the side case?

Yes to both.

 

[polcat1p]

do you think my engine is still good? How can i test it?
thanks

 

[Russ2251]

do you think my engine is still good?

Very likely. I can still see cross-hatching which is a good indication that there is a lot of life left.
What leads you to believe you need a new engine?

 

[polcat1p]

because there was water in my oil. The last time i rode it was raining(light rain), and i didnt have a cover for my filter(didnt think it whould be a big deal. Im not sure if its water, but sure is milky looking. I have it in a clear plastic cont., to see if it separates.

 

[Russ2251]

A little water won't hurt anything and will boil off in a few minutes. Water will normally enter crankcase because of condensation and cannot be avoided. Water can't get to crankcase through carb.
How much water are you talking about?

 

[jr dragster T]

Yeah a little bit of water wont hurt much. We get alot of water from running Alky in our engine.

 

[polcat1p]

I dont think there is a ton of water, but here is a pic.

 

[Russ2251]

Hard to tell from pic. How much would you estimate? Teaspoon?

 

[polcat1p]

I guess ill remove the gov, and put back together.
thanks for the help

 

[polcat1p]

not sure, The comp test is what scares me. I thought maybe the water when by the rings and into the case.

 

[Russ2251]

I thought maybe the water when by the rings and into the case.

Not possible.

 

[jr dragster T]

Yeah the water would have been long gone before it blew by past the ring's. Ring's are tight enough that even if water was pouring down your intake and your inlet valve was open the water still wouldnt leak down that is if the engine is off. In all your engine is most likely fine, Clean it up and throw it all back together throw some new oil in and and go have fun.

 

[scar]

Not possible.

actually it is possible at least in a regular lawn mower engine it is if its not running anyways

 

[Russ2251]

It's a lot more fun when I'm disagreed with.

 

[Russ2251]

actually it is possible at least in a regular lawn mower engine it is

Explain.

 

[scar]

if its not running it can at least

 

[Russ2251]

Explain.

 

[jr dragster T]

If your ring's are so loose water can get by them with the engine off you have some serious leak down!

 

[Russ2251]

If rings were that bad, engine would not run.