Radiator fluid coming out of Air Intake

Oldtink · May 11, 2018

you might try searching the John Deere Parts catalog.
John Deere - Parts Catalog

DLTTrekkers · May 11, 2018

Ranger0282 said:
Thanks for your response DLTTRekkers.. can anyone direct me to an engine diagram or possibly tell me where this gasket is? I know you must not be meaning head gasket . I would take it apart myself IF I knew where to start looking. I am a jack of all trades kinda guy but have never once worked on this engine. I have rebuilt the loader arms a couple of times. Figuring that out took a rocket scientist...no joke.

I really do appreciate the help fellows. My offer on the Cuban still stands... I am gonna Google "5105 TopGasket" and see where that leads me as well..

Topgasket=Headgasket

Ranger0282 · May 11, 2018

Quebecguy said:
Hello Ranger,
Welcome to TBN! I just looked at my 5205 which is basically the same as your 5105 and I don't see any possibility for coolant to be leaking into the air filter housing. Perhaps you have a pin hole leak in the radiator which sprays antifreeze onto the filter housing.

Thanks Quebecguy.... When I went to do this years maintenance on my tractor, I change the oil and filter and the hydrophilic filter and lube. I pulled the air filters out and saw the antifreeze in there and thought the same thing. I assumed there was NO WAY antifreeze could get in the intake so I COMPLETELY dismissed the idea. I assumed the same thing you just said.......until I saw it dripping out.. Pic's are on the way... Thanks Guys!

Quebecguy · May 11, 2018

Hello again Ranger,
Has the large hose that goes from the air filter housing to the motor (over the radiator) worn a hole in the top of the radiator and in itself? I'm not after that Cuban cigar as I managed to quit smoking a few years ago.

Ranger0282 · May 11, 2018

Ok here are some pics. First, I was just bush-hogging so that is why the radiator is dirty. I always clean the front off when cutting for I know how dirty it can get. Second, before anyone calls me an Ole Hippie for the bracelet I am wearing, it's from my 2 year old granddaughter who has me around her little finger like a ring...

I am pointing to where the coolant was dripping from... Let me know if there are other pictures needed....Thanks Guys!

Ranger0282 · May 11, 2018

Quebecguy said:
Hello again Ranger,
Has the large hose that goes from the air filter housing to the motor (over the radiator) worn a hole in the top of the radiator and in itself? I'm not after that Cuban cigar as I managed to quit smoking a few years ago.

Good Thought! But no... You can always have that cigar sent to a friend

mcfarmall · May 11, 2018

The inside of the filter housing looks nice and dry. The air intake hose from the filter to the manifold goes vertical then horizontal so I think that rules out coolant moving from the intake manifold back up the pipe all the way down the hose, through the paper filter element, into the filter housing and then dripping out.

Inside of filter housing dry.
Inside of manifold hose dry.
Paper air filter element dry.

I think you have a pinhole in the radiator that is shooting a small stream of coolant onto the air filter housing.

prichard · May 11, 2018

mcfarmall said:
The inside of the filter housing looks nice and dry. The air intake hose from the filter to the manifold goes vertical then horizontal so I think that rules out coolant moving from the intake manifold back up the pipe all the way down the hose, through the paper filter element, into the filter housing and then dripping out.

Inside of filter housing dry.
Inside of manifold hose dry.
Paper air filter element dry.

I think you have a pinhole in the radiator that is shooting a small stream of coolant onto the air filter housing.

Agreed. If it was the head gasket the same would apply. No way to get there without going through the filter and box.

Maybe following the mounting bracket that's attached to the radiator?

flyerdan · May 11, 2018

The intake is under negative pressure when the engine is running, so a cylinder would have to fill completely to backfeed coolant under radiator pressure when the engine was off, and that would be pretty evident. Judging from the pattern of dust (mud?) on the front of the radiator, I would also suspect a pinhole in the cores or top tank or seam. A quick test would be to pull both radiator hoses, block them off and put a pressure tester where the cap goes and see if it bleeds down. Or tape a piece of cardboard onto the back of the air filter housing and see if it gets wet.

DLTTrekkers · May 11, 2018

flyerdan said:
The intake is under negative pressure when the engine is running, so a cylinder would have to fill completely to backfeed coolant under radiator pressure when the engine was off, and that would be pretty evident. Judging from the pattern of dust (mud?) on the front of the radiator, I would also suspect a pinhole in the cores or top tank or seam. A quick test would be to pull both radiator hoses, block them off and put a pressure tester where the cap goes and see if it bleeds down. Or tape a piece of cardboard onto the back of the air filter housing and see if it gets wet.

What about that little white spot in the core of the radiator ?