350 issue

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lawsonj5
420 crawler
420 crawler
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Joined: Tue Apr 12, 2011 10:46 am

350 issue

Post by lawsonj5 » Tue Jul 03, 2012 6:55 pm

Was grading the potholes out of the driveway today with my 350 diesel. Went to park the machine and it sounded kind of funny when I idled it down (Kinda like it had a miss). Shut the key off and the dozer kept running . Turned off the battery kill switch and it kept running. Tried to throttle it up again and it had no throttle with everything shut off. Came inside to read my manual and 3 minutes later I heard the engine putter out and die. Anybody have an idea of what might cause this? Thanks.

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Willyr
2010 crawler
2010 crawler
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Joined: Sat Jul 17, 2010 3:03 am
Location: Downeast Maine (North of Ellsworth)

Post by Willyr » Tue Jul 03, 2012 7:50 pm

try a fuel shut off.

Otherwise if your rings are bad the engine can scavenge the crank case oil as fuel.
former owner of a 1956 420c
All help is greatly appreciated.

Proud owner of a project 1952 JD 60

http://www.youtube.com/watch?v=nFehqXVd9z4

jmanatee
MC crawler
MC crawler
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Joined: Tue Apr 24, 2012 5:26 pm

Post by jmanatee » Tue Jul 03, 2012 10:18 pm

Willyr wrote:try a fuel shut off.

Otherwise if your rings are bad the engine can scavenge the crank case oil as fuel.
Be careful if the rings have gone bad enough to scavenge the crank oil it can run away

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LeonardL
350 crawler
350 crawler
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Location: Missouri

Post by LeonardL » Wed Jul 04, 2012 8:39 am

The first thing I would check is to see if you have fuel. When these machines run out of fuel they will cause this issue. The other thing I would check is to make sure your fuel filter or filters aren't stopped up.
I'm not sure how these engines do this as I am not an engineer, but they will flutter on as if they are still trying to run. Make sure you have fuel and clear filters. Also check the vent in the fuel tank to be sure in isn't pulling a vacuum in the tank. This can also cause your issue.
40 plus years working on JD 350s, 400Gs, 450s and other equipment both Ag and Construction.

lawsonj5
420 crawler
420 crawler
Posts: 25
Joined: Tue Apr 12, 2011 10:46 am

Post by lawsonj5 » Wed Jul 04, 2012 8:41 am

After it shut off on its own, I went out and fired it back up and everything worked fine. I did notice that one of the air bleeds on top of the fuel filter was bubbling and loose. Is it possible that it was sucking air into the fuel causing what sounded like a miss? Also, would this leak be enough to create a vacuum still drawing fuel after shutoff?

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Willyr
2010 crawler
2010 crawler
Posts: 695
Joined: Sat Jul 17, 2010 3:03 am
Location: Downeast Maine (North of Ellsworth)

Post by Willyr » Wed Jul 04, 2012 11:08 am

A air leak will give it a miss. The air leak would make it easier to shutoff tho.
former owner of a 1956 420c
All help is greatly appreciated.

Proud owner of a project 1952 JD 60

http://www.youtube.com/watch?v=nFehqXVd9z4

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