7753 engine oil leak

John Klink · Oct 24, 2014

I have a 7753 75% of the oil leaked out or blew out. It seems like the leak is on the back side of the engine, or up by the blower. I cant see anything other than where the oil flows to the bottom of the engine. I added oil and let it run for 20 minutes and last no oil. I then revved it up for about 3 minutes and it started to leak? Where should I start to look? I don't have any tech manuals and cant see anything. Id like to know more about it before I have to take it into the dealer. especially if I can fix it myself.

antfarmer2 · Oct 24, 2014

First don't run it with out oil I can't see it from here but would look at the oil pressure sending unit

John Klink · Oct 24, 2014

antfarmer2 said:
First don't run it with out oil I can't see it from here but would look at the oil pressure sending unit

Thanks, I cant see it from anywhere I look on the engine and haven't taken anything off yet. I filled it up with oil before I ran it. I will check the oil pressure unit. Thanks John

John Klink · Oct 24, 2014

antfarmer2 said:
First don't run it with out oil I can't see it from here but would look at the oil pressure sending unit

Ok I know where the Oil pump is, but Cant seem to find a oil pressure sending unit location.

antfarmer2 · Oct 24, 2014

John Klink said:
Ok I know where the Oil pump is, but Cant seem to find a oil pressure sending unit location.

I would go to bobcat or NAPA with engine info and they can show you

antfarmer2 · Oct 24, 2014

antfarmer2 said:
I would go to bobcat or NAPA with engine info and they can show you

I belive your engine is a kubota 2203

John Klink · Oct 28, 2014

antfarmer2 said:
I belive your engine is a kubota 2203

Thanks for your help. I Lifted the cage up one more time to see if I could see more. I put a roller cart over the actuator arms and got as far back as I could. As you know visibility is pretty poor on the back side. I reached for the blow over hose to see if it was connected, and then saw that there was a hole in the engine, which ended being a dipstick hole on the lower backside of the engine almost completely unseen unless you crawl and cram your head back as far as you can go. Bottom line it was a dipstick for the oil pan that blew out. When I went to high RPM's it blew the oil out.

antfarmer2 · Oct 28, 2014

John Klink said:
Thanks for your help. I Lifted the cage up one more time to see if I could see more. I put a roller cart over the actuator arms and got as far back as I could. As you know visibility is pretty poor on the back side. I reached for the blow over hose to see if it was connected, and then saw that there was a hole in the engine, which ended being a dipstick hole on the lower backside of the engine almost completely unseen unless you crawl and cram your head back as far as you can go. Bottom line it was a dipstick for the oil pan that blew out. When I went to high RPM's it blew the oil out.

Glad you found it while your in there see if your blow by hose is plugged up

Tazza · Oct 29, 2014

antfarmer2 said:
Glad you found it while your in there see if your blow by hose is plugged up

The dip stick should never just blow out.
Not sure if these machines have breether tubes or not, if so, wasps like making nests in them.
If it doesn't have one open to the atmosphere, check the line from the rocker cover that may go to the inlet manifold.

7LBSSMALLIE · Nov 25, 2014

Tazza said:
The dip stick should never just blow out.
Not sure if these machines have breether tubes or not, if so, wasps like making nests in them.
If it doesn't have one open to the atmosphere, check the line from the rocker cover that may go to the inlet manifold.

seen this about a dozen times, its a plastic plug . kinda dumb if you ask me. never had a repeat after replacement. i use a little permatex #1 on it

7753 engine oil leak

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