1978 OMC 140HP Leaking yellowish oil

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Chris42069

Cadet
Joined
Feb 17, 2009
Messages
8
I have be given a 1978 Lam Pro boat has 4 cylinder OMC 140 inboard. It has been sitting for a long time. I got it to run but for some reason it's leaking a yellowish oil. I have better pics to show what I mean. It will not let me upload it. Im kinda new to boats. If someone could email me so I could as a series of questions it would be great.
 
chiefalen

chiefalen

Captain
Joined
May 18, 2008
Messages
3,598
Re: 1978 OMC 140HP Leaking yellowish oil

Welcome aboard !

Where is it leaking from? The drive, the motor?

You could go to the top of the forum at " Adults only " And see how to post pics.

And if you want reply's i for one do not e-mail people, i do my reply's here in this open forum.
 
C

Chris42069

Cadet
Joined
Feb 17, 2009
Messages
8
Re: 1978 OMC 140HP Leaking yellowish oil

Its on about the propeller. I think there is a flat head screw that its the drain port for the oil but there is a mesh screen about it and its leaking threw there.
 
chiefalen

chiefalen

Captain
Joined
May 18, 2008
Messages
3,598
Re: 1978 OMC 140HP Leaking yellowish oil

Pic please. I suspect, what it is, but i won't give you wrong info.

Pic of the whole drive then one where it's leaking.

Thank you i just want to right and not send you in the wrong direction hope you understand.
 
CheapboatKev

CheapboatKev

Vice Admiral
Joined
Oct 4, 2008
Messages
5,813
Re: 1978 OMC 140HP Leaking yellowish oil

Chris42069 said:
http://i60.photobucket.com/albums/h39/Darkforces420/DSC04222.jpg

http://i60.photobucket.com/albums/h39/Darkforces420/DSC04196-1.jpg

Should be some good pics.

I also noticed that when I put it full forward it does not spin fast also when I got to reverse the propeller does not turn the opposite direction.
Click to expand...

Welcome aboard..Your in good hands with Chiefalen...regarding your prop issue..
Here is advice I got when I first joined back in Oct from Fishermark...Explained the prop rotation questions..


Without the engine running, put the shifter in forward, then go and turn the prop counterclockwise. It should lock into place. When you turn it clockwise it should "ratchet."

Then put the shifter in reverse and the prop should lock in place when turned clockwise.

In neutral the prop should spin freely in any direction.
 
chiefalen

chiefalen

Captain
Joined
May 18, 2008
Messages
3,598
Re: 1978 OMC 140HP Leaking yellowish oil

Electric shift. Oh boy !

How i know that, i just knew it.

You need a rebuild. All new rubber everything, and a water pump kit.

Get the oem manual guy on ebay has it. He's on Long island NY.

Kev it don't work, Marks test for this drive.

Now some unsolicited advice, don't mess with this thing.

Sorry.
 
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