1850 Oliver Diesel/Slow cranking

So over about a week of evenings I Plowed up 30 acres with this tractor. It always started good and had plenty of power to pull 4-16 plow in 4th gear. couple days latter I go to bring it home and it wont start turns over slow and does not want to fire. Ended up pull starting and drove it home about 8 miles ran fine good oil pressure batt charging all was well or so I thought. Parked for the winter.

The next spring I go to start it turns over slow I thought must be the batt. So new one goes in same thing. Well better check starter take it in it's fine ok lets check cables and ground their fine . Take starter off 1650 and exchange same thing. So this spring I looked at it again same thing. So I thought I better check the bearings and they look good all have oil in them and not bad for wear. The only one I have not checked is #7 main as this means pull engine. With the clutch in a new batt. good starter good cables still turns over slow starter gets hot and runs down batt. I got it running one day last summer and tried to bale some hay with it and it just gradually lost power to turn baler.

It kinda acts like a engine out of time. Does anybody have any Ideas???? Where should I look next? Anybody have this happened to them? I have owned this tractor many yrs/ never had any problems all this came out of the blue.

Sounds like poor cable connections and maybe to small of cables for it. Then the hard starting sounds like a timing issue. May be the pump has got issues. Would start with the cables and connections. Then would check timing. Injectors can also cause hard starting if they are not up to snuff.

Pull the injection pump and check the quill shaft, short shaft that drives the injection pump. They will break and throw the timing off. Been there, done that!!

Try starting with the easy things. slow crank almost always means low voltage to the starter. Check voltage first at the battery terminal to terminal, then clamp to clamp. Then solenoid lug to ground. Then check the same places while cranking. E

Crank for a while and feel the cables. Neighbor had a kubota he had similar fits with and when I was helping him chase it down I found a hot spot in the cable. A new cable cured it. Loss of power is most likely a fuel filter issue. Could be anything else too, but start with the filter as that's most likely. Second most likely will be a line restriction or something in the tank.

I'll second the voltage test while cranking. I didn't take my own advice and chased a similar problem one summer on my 1755. New batteries, new starter - still cranked slow. Turns out there was a crimp connection on my ground wire that looked fine, but was a high resistance connection. Replaced the ground wire and cured it.
Pete

Thanks for all replies. I have changed filters changed cables checked for hot cables no problems. It is getting fuel just turns over slow like something is bound up. Keep the Ideas coming tho all are welcome I was thinking about looking at the pump next.

If the hydraulic system is "on demand", and dead headed, the power it takes would show up as slow cranking. Jim

(quoted from post at 05:18:47 05/13/20) I'll second the voltage test while cranking. I didn't take my own advice and chased a similar problem one summer on my 1755. New batteries, new starter - still cranked slow. Turns out there was a crimp connection on my ground wire that looked fine, but was a high resistance connection. Replaced the ground wire and cured it.
Pete

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Pete it looks like he is a parts changer not a trouble shooter.

To the showcrop, seems there is always a smart azz in the bunch. This is why I seldom post on this site. If I wanted a grade school answer I would have asked for one. If you look at my post you would see I had checked the cables and starter to eliminate those. But you made the assumption I am a parts changer I am not. Remember what assume really means azz/u/me . Mabe next you could Show us a Crop rather than belch spew out of your mouth that you dont know what your talking about.

(quoted from post at 07:31:50 05/14/20) To the showcrop, seems there is always a smart azz in the bunch. This is why I seldom post on this site. If I wanted a grade school answer I would have asked for one. If you look at my post you would see I had checked the cables and starter to eliminate those. But you made the assumption I am a parts changer I am not. Remember what assume really means azz/u/me . Mabe next you could Show us a Crop rather than belch spew out of your mouth that you dont know what your talking about.

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Sorry to have offended you Mnoliver guy, but "checked for hot cables no problems" is not generally considered to be a valid substitute for voltage drop measurements.

(quoted from post at 07:31:50 05/14/20) To the showcrop, seems there is always a smart azz in the bunch. This is why I seldom post on this site. If I wanted a grade school answer I would have asked for one. If you look at my post you would see I had checked the cables and starter to eliminate those. But you made the assumption I am a parts changer I am not. Remember what assume really means azz/u/me . Mabe next you could Show us a Crop rather than belch spew out of your mouth that you dont know what your talking about.

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mnoliverguy, come along to NH and look at my crop. It was a little slow coming along until about a week ago, but I got my fertilizer on mid April and after the rain it is coming along very well now.