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AC 175D Engine oil problem?
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NC Bruce View Drop Down
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Joined: 15 Sep 2009
Location: Mill Spring, NC
Points: 223 		Post Options Post Options   Thanks (0) Thanks(0)   Quote NC Bruce Quote  Post ReplyReply Direct Link To This Post Topic: AC 175D Engine oil problem?
    Posted: 07 Feb 2012 at 10:03pm

My favorite AC 175 Diesel has black oil leaking out of the manifold.  Looks like some is running down from muffler joint too.  BEFORE I get to take off the manifold for a look, WHAT are some repair possibilites I'm looking at....best and worst ideas?

Tractor cranks, seems to run good, not smoking noticeably more?.., has about 3700 hrs?
I was hoping for 'valve gasket leak' but it looks like only coming thru manifold.
 
Wish it could be a head gasket, but that's not a symptom, is it?
Does it sound like a bad Piston?  if so...why?  
 
Any advice / ideas greatly appreciated!
 
*Lately, I noticed it was taking a little oil to top it off (on dipstick).  I was cutting, raking, and baling just a few round bales ( I know it's Jan, & my Dad would have had a fit....ha!...but missed my fall cutting...besides, hay was short and too dry..if you can believe that!!!)
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MACK View Drop Down
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Joined: 17 Nov 2009
Points: 7664 		Post Options Post Options   Thanks (0) Thanks(0)   Quote MACK Quote  Post ReplyReply Direct Link To This Post Posted: 07 Feb 2012 at 10:25pm
Could be a bad injector or not being worked hard enough to burn oil or fuel that got in manifold.  Put it on a good load and see if it clears up.   MACK
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j.w.freck View Drop Down
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Joined: 16 Sep 2009
Location: karnack texas
Points: 1153 		Post Options Post Options   Thanks (0) Thanks(0)   Quote j.w.freck Quote  Post ReplyReply Direct Link To This Post Posted: 08 Feb 2012 at 8:52pm
you are probably right mack,had the same problem with one of my 45-d,replaced the injectors,dont slobber any more...
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Steve Bright View Drop Down
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Joined: 14 Sep 2009
Location: Martinsville, I
Points: 2107 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Steve Bright Quote  Post ReplyReply Direct Link To This Post Posted: 09 Feb 2012 at 8:03am
My vote is also INJECTOR
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NC Bruce View Drop Down
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Joined: 15 Sep 2009
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Points: 223 		Post Options Post Options   Thanks (0) Thanks(0)   Quote NC Bruce Quote  Post ReplyReply Direct Link To This Post Posted: 09 Feb 2012 at 3:24pm
thanx fellows!  I had planned to pull the manifold and run it to see what's happening?
 
What's procedure for checking the injectors?    ...to find the bad one,
or remove all 4 and have them each tested?
 
thanx for any advice.....again!
 
 
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j.w.freck View Drop Down
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Joined: 16 Sep 2009
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Points: 1153 		Post Options Post Options   Thanks (0) Thanks(0)   Quote j.w.freck Quote  Post ReplyReply Direct Link To This Post Posted: 09 Feb 2012 at 7:32pm
best to remove the injectors and put them on the test stand and have them run...
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