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cguetter 
Bronze Level
Joined: 13 Sep 2023
Location: MN
Points: 6
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 Topic: 185 Fuel Issue
Posted: 18 hours 48 minutes ago at 5:33pm |
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I have a question. The other day i was digging with my 185 and about an hour and a half in it decided to lose RPMs and power to the point it could barely pull itself. Push the clutch in it regains the RPMs but if you let of the clutch it goes back to barely even pulling itself again, limped it home and let it sit till the next day ran fine for an hour or so again and did the same thing, came home and let sit for a couple hours and put it on the grain drill and it did the same thing after an hour in again. One time i got off and played with the fuel plunger and it seemed like it helped temporarily but i replaced that a couple years ago so dont know if thats the issue and need to replace or not also fuel filter is only 20 hrs old. Any thoughts on cause or fix ideas. Anything is helpful. Thank you
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injpumpEd
Orange Level Access
Joined: 13 Sep 2009
Location: Walnut IL
Points: 5206
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Posted: 18 hours 37 minutes ago at 5:44pm |
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Check the return fitting on top of pump, bet it's plugging up with broken down flex ring material. You can put an open fitting in the hose barb's place or you can knock the ball and spring out of the return fitting. I clean and reuse them when I rebuild those as that return fitting is now over $60, adds to an already expensive rebuild job.
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210 "too hot to farm" puller, part of the "insane pumpkin posse". Owner of Guenther Heritage Diesel, specializing in fuel injection systems on heritage era tractors. stock rebuilds to all out pullers!
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TedN
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Joined: 30 Apr 2025
Location: Central WA
Points: 172
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Posted: 18 hours 3 minutes ago at 6:18pm |
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Might have a plugged tank vent. See if you can get the fuel cap off when it does it. If it is pulling a vacuum take your air nozzle to the hole in the middle of the cap. Be aware that anything that is plugging it will come toward you.
Ted
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190XTD seriesIII, 190XTD seriesI, maroon belly 7000, 190XTD series??? project(or maybe parts)
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whatscooking
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Joined: 08 Oct 2017
Location: Indiana
Points: 106
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Posted: 17 hours 33 minutes ago at 6:48pm |
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I drilled out my plastic fuel cans and installed a bolt for a vent I could take out and a small piece of the yellow drilling got down into the elbow of the strainer and made it act that way. I found it by pulling out the plunger it sucked it right back in, knew that wasn't right.
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SteveM C/IL
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Joined: 12 Sep 2009
Location: Shelbyville IL
Points: 8989
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Posted: 13 hours 8 minutes ago at 11:13pm |
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Loosen screws on timing window so it leaks fuel and see if the "fixes" it. Bet a dollar the flex ring is shot. Know what you're doing before just pulling pump. Others have learned the hard way when they pulled a pump without setting timing first.
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cowkicker
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Joined: 21 Mar 2010
Location: Ky
Points: 534
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Posted: 5 hours 9 minutes ago at 7:12am |
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Have you checked flow from fuel bowl?
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DanielW
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Joined: 19 Sep 2022
Location: Ontario
Points: 311
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Posted: 51 minutes ago at 11:30am |
+1 to what cowkicker suggests. Flow from the tank outlet is an easy thing to check, and a common issue on any older tractor. I think every one of the last 4 or 5 tractors I've bought had crud partially (or fully) restricting the fuel outlet causing similar symptoms and requiring a tank cleaning. All the sludge/grime that's built up in these tanks over the past 50 years starts to strip off with the cleaning agents and alcohol additives in modern fuels. Wouldn't want to guarantee that's your problem. But definitely the first thing I'd check.
Next guess would be the flex ring disintegrating in the injector pump. As mentioned above you can check pretty easily. If that's the problem, you can knock out the check valve to get by for a while, but a pump rebuild is probably soon to be in order.
Here's another discussion that gets into more detail about the injection pump flex ring issue. But I'd be doing the easy check first and checking flow from the tank.
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