180 cutting out
Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Farm Equipment
Forum Description: everything about Allis-Chalmers farm equipment
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=105488
Printed Date: 10 Sep 2025 at 6:12am
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Topic: 180 cutting out
Posted By: Klausp
Subject: 180 cutting out
Date Posted: 29 Apr 2015 at 9:36pm
My 180 started cutting out( missing on 1 cylinder)
I noticed it the other day plowing it would change the exhaust note a bit, but did not feel loos of power.
Today it was getting worse, it is not all the time and will do it at all rpm's, idle up to 2000 rpm's.
I was planting sweet corn today when it did it a lot, still don't really feel a loos of power.
I tried to loosen injector lines to see if I could find what cylinder it is, and it seem like it is 4 the from the back of engine looking forward.
What happens it will start cutting out and the rpm's will jump 100. It can last 15 sec up to several minutes, then just go away again.
Any idea if it is a injector or the pump or something else?
Thanks
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Replies:
Posted By: MACK
Date Posted: 29 Apr 2015 at 9:56pm
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Does it smoke more when it acts up? Could be alot of things, loose rocker arm, injector sticking, valve sticking, something restricking return line, or alot of other things. MACK
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Posted By: Klausp
Date Posted: 29 Apr 2015 at 10:03pm
No smoke. When I loosen the injector line for that cylinder when it is acting up, it don't change the sound.
It do that on all the others,reason I believe it is the 4th cylinder. What I don't understand it why it go up 100 rpm when it happens
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Posted By: SHAMELESS
Date Posted: 29 Apr 2015 at 11:00pm
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my 180 started doing that too, did the cheapest first, changed the fuel filter and it quit doing that!
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Posted By: WF owner
Date Posted: 30 Apr 2015 at 4:28am
It sounds like a fuel problem to me.
Like Shameless said, I would check all the simple things first. Check the sediment bowl for a plugged screen and adequate fuel flow. (I once had a piece of dirt plug the top of the sediment bowl and restrict flow.) If that's ok, change your fuel filter. Check to make sure your hand pump is locked in the in the in position. Pump the hand pump and check fuel flow on the inlet line of the injection pump.
If it continues to get worse and gets to the point where it quits, or won't start at all, remove the fitting on the top of the pump that goes to the return line and try to start the engine. If it starts, and seems to run ok, you have debris in the check valve and you have internal injection pump damage (which is what I suspect). If that's the problem, you will need to have it repaired by a professional.
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Posted By: DMiller
Date Posted: 30 Apr 2015 at 4:33am
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My own 180 did that for a couple of years intermittently, did the fuel filter changes and seemed OK then the injection pump really started to give fits and it fully quit. Pull the return line at the front top of the injector pump, remove the black steel fitting where the line connected and look at the check valve inside, if a lot of fibrous debris the pump will need to be rebuilt sometime soon.
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Posted By: CaseyCreek
Date Posted: 30 Apr 2015 at 8:07am
My 185 bears the scars of ignoring a problem like you describe with the first cylinder. The previous owner ignored that issue for a bit too long and wound up with an overhaul. The "scars" I refer to are the changed color of the paint on the block outside the first cylinder. The previous owner kept good notes in the operators's manual and noted that he rebuilt the injector pump and replaced injectors about the same time as the overhaul.
I believe you should contact InjPumpEd.
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D17 Series III,D17 Series IV, 185
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Posted By: Klausp
Date Posted: 30 Apr 2015 at 8:08am
I removed the sediment bow and it was full of dirt almost looked like mud.
Waiting for a fuel filter to come in this morning.
Hoping this is the problem.
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Posted By: DrAllis
Date Posted: 30 Apr 2015 at 8:47am
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While you have the glass bowl removed, turn on the pet cock and make sure you have TWO STREAMS of fuel gushing from the base. If not, the sediment bowl inlet is partially plugged up above and needs cleaning.
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Posted By: Klausp
Date Posted: 30 Apr 2015 at 5:45pm
Got a new filter cleaned everything runs great now.
Also seem like it took care of my problem with it running 220 degrees.
It now stays at 180-190 plowing.
Thanks
Guys
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Posted By: WF owner
Date Posted: 30 Apr 2015 at 7:07pm
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It was probably starving for fuel and running too lean. I hope that took care of your problem permanently.
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