MEP-802a Oil Leak

[jstew0903]

I have a refreshed 802a with less than 200 hours on it with an oil leak. It seems to be coming from the to on the intake/valve cover area. I ordered a valve cover gasket for it.

My question is there any other place anyone has seen an oil leak from in the upper portion of these generators? It’s pouring out at a pretty good rate. In the photo I took while it was running you can see the oil pooling up while vibrating. (You know how these two cylinder motors are)

Thank you

Jason

 

[Light in the Dark]

Are you certain its not diesel fuel? I would suspect that you have seeping/leaking fuel return lines since its up top. Certainly a valve cover could leak.. but I've yet to experience it. I have experienced every conceivable leak from the return line (and the Ts they tie to) up top though.

 

[Guyfang]

Stick your finger in the oil in the bottom of the set. Check it out. Rub it between your fingers. Is it thick? Or thin? Sniff it. Smell like diesel?

 

[jstew0903]

Are you certain its not diesel fuel? I would suspect that you have seeping/leaking fuel return lines since its up top. Certainly a valve cover could leak.. but I've yet to experience it. I have experienced every conceivable leak from the return line (and the Ts they tie to) up top though.

Yes I’m positive it’s oil. After running about eight hours it will be a quart plus low. I touch it and it’s definitely motor oil.

 

[jstew0903]

Stick your finger in the oil in the bottom of the set. Check it out. Rub it between your fingers. Is it thick? Or thin? Sniff it. Smell like diesel?

it’s definitely oil. Think and slimy

 

[Mullaney]

Yes I’m positive it’s oil. After running about eight hours it will be a quart plus low. I touch it and it’s definitely motor oil.

.
Smell? Like Diesel?
Looking for a potential problem - before it goes bad...

 

[jstew0903]

.
Smell? Like Diesel?
Looking for a potential problem - before it goes bad...

it’s definitely an oil leak. Oil does not run uphill. Outside of the valve cover is there any place on the top of the engine near the intake and valve cover that oil would leak from? Any sensors tied in to the oil path? I ordered a new valve cover gasket to start but I don’t want to tear that down to find something else there.

Appreciate your insight

 

[Ray70]

Nothing up there besides the valve covers and the silicone O-rings around the shoulders of the "nuts" that hold them on..... that would leak oil.
On the 2 valve cover nuts with fuel line clamps on them, make sure they put the O-ring into the recess in the valve cover, then the fuel line clamp over the O-ring, then the nut on top. The O-ring does not go on the shoulder of those 2 particular nuts.

 

[jstew0903]

Nothing up there besides the valve covers and the silicone O-rings around the shoulders of the "nuts" that hold them on..... that would leak oil.
On the 2 valve cover nuts with fuel line clamps on them, make sure they put the O-ring into the recess in the valve cover, then the fuel line clamp over the O-ring, then the nut on top. The O-ring does not go on the shoulder of those 2 particular nuts.

Thank you.

I guess I need to order the O Rings. Anyone have part numbers or a source or link?

 

[Ray70]

Looking at the engine TM it says PN 201-81200 which is also part of gasket kit PN 186-3210 or 186-6212.... which is the full engine gasket kit.
Or here is a replacement:

PAIR Valve Cover O-ring O-rings 201-81200 5330-01-087-7373 Fits LPW4 DN4M MEP803 | eBay

NSN 5330-01-087-7373.

www.ebay.com

But not the same OEM orange silicone.
To be honest, you could easily take an old one out, measure it and get them for $.05 each at a place like www.throringstore.com

 

[jstew0903]

Looking at the engine TM it says PN 201-81200 which is also part of gasket kit PN 186-3210 or 186-6212.... which is the full engine gasket kit.
Or here is a replacement:

PAIR Valve Cover O-ring O-rings 201-81200 5330-01-087-7373 Fits LPW4 DN4M MEP803 | eBay

NSN 5330-01-087-7373.

www.ebay.com

But not the same OEM orange silicone.
To be honest, you could easily take an old one out, measure it and get them for $.05 each at a place like www.throringstore.com

Thank you very much

 

[2Pbfeet]

Looking at the engine TM it says PN 201-81200 which is also part of gasket kit PN 186-3210 or 186-6212.... which is the full engine gasket kit.
Or here is a replacement:

PAIR Valve Cover O-ring O-rings 201-81200 5330-01-087-7373 Fits LPW4 DN4M MEP803 | eBay

NSN 5330-01-087-7373.

www.ebay.com

But not the same OEM orange silicone.
To be honest, you could easily take an old one out, measure it and get them for $.05 each at a place like www.throringstore.com

Great idea. Typo? https://www.theoringstore.com/?

I also get o-rings from McMaster.com

All the best,

2PbFeet

 

[Ray70]

Yup... Typo! , I can't even spell "THE" correctly

 

[2Pbfeet]

Yup... Typo! , I can't even spell "THE" correctly

Welcome to the club. We have jackets!