To Tractor Vet- 1486

Larry B 1486 · Oct 12, 2009

I had a posted a few weeks ago on my 1486 not having enough power and it kind got out of hand. I still have the same problem. I KNOW it's not putting out the power it should. You said the fuel lines, they are the correct lines not home made ones. The filters have been changed, fuel and air. The pump has been rebuilt and also the injectors. I have not had it on a dyno but from running IH tractors all my life I know. I know my 1466 is turning atleast 20hp over but the 86 won't hold a candle to it. When rebuilt they told me they set it up 10% but when I got it back could not tell any difference. the timing is set on 18. I backed out the fuel screw out myself one round and no difference. When you put it under a heavy load it just pulls down. Here is a example, I can pull a hay trailer, 12 round bales, up a pretty steap hill here where I live thats 1/4 mile long, my 1466 will pull the hill in High 4 and keep going and the 86 will have to go down to high 2. Any ideas???

billyar · Oct 12, 2009

A neighbor had a 7140 with muffler stopped up took long time to find it was the problem.

Anonymous-0 · Oct 12, 2009

If you take the cover off the pump and towards the engine's side of the " hole", there is a lever with a little weight on it pointing towards the front. Loosen the screw and lift it so that the top of the weight is level or just above the top of the hole where the cover goes,then the really fine screw needs to be turned out one to one a half turns. this will set the torque rise. Hope this helps.

the tractor vet · Oct 12, 2009

All i can tell ya is get it on a Dyno and see what it is putting out and i would also say that the pump shop does not know what PLUS 10% is as if it was set a t 10 over she would throw smoke under load , now not as much as a super stocker but she would show some smoke . Now you say that the fuel line from the filter to the pump is STOCk but you did not tell me if it was NEW or old and here i would invest in a NEW LINE FROM CASE I H as that line has to be the correct line . NOw it MAY LOOK GOOD ON THE OUT SIDE but what about the inside ??? i have seen them LOOK GOOD on the outside but on the inside they will close off and when they are bad enough the tractor will plum shut down so if it JUST Starting to colaps just a little then it MAY be slowing the flow to the pump .

MN Scott · Oct 12, 2009

I don't remember the specifics on your 14. Have you rebuilt the engine recently? If not check the cam shaft for wiped out lobs. The 400 series engine factory cams were known for cam wear. A bad cam would certainty cause power problems. Best bet is to get it on a dyno to see just how much power it is actually producing.

Larry B 1486 · Oct 13, 2009

Vet. The line is new and did come from a CIH dealer and still has the part number on it. I have been thinking about pulling the pump back off and taking it somewhere else. You always have to advance the throttle when it gets under just the slightest pull like the governers don't open up.

Larry B 1486 · Oct 13, 2009

It does not have a muffler. I run straight pipes on my 1466, 1486 and 856 that also has a turbo and I think my 856 will almost do about as much as my 1486 right now.

Larry B 1486 · Oct 13, 2009

MN Scott. I bought the tractor about three years ago and I have not rebuilt the motor. It seems tight, It uses very little oil, less than one gal. between oil change, change about 120 hrs. It starts easy, just hit the key and its gone. Someone told me when going down a steep hill if the motor holds the tractor back with out using the brakes it should have good compression and it holds back better than my 1466 does.

the tractor vet · Oct 13, 2009

Don't know where your at so i can not advise who you could trust . all the pumps that i have done are sent to one guy that i can trust and if i tell him i want STOCk then that is what i get and if i want whatever that is what i get . If the gov. is not picking up the load and is being lazy then it is a pump problem and they have the wrong settings on it or the gov. is not working and they should have caught it
. setting behind a keyboard and trying to figure out problems is hard to do and give correct answers .All my pumps go to Progressive diesel in New Castle Pa. Harry has always done well for me and at a reasonable price .

Larry B 1486 · Oct 13, 2009

I appriciate it. I already put $900.00 in the rebuild but I keep thinking it has to be the pump but was just wanting to get other oppions because I don't think the motor is wore out and needing a overhaul. I am located on the southern tip of Illinois ten miles off the Kentucky line. It cost money to keep guessing and I never been able to find and trees around here that grows money and the people that have found them won't tell me where they are. Thanks Larry

Owen Aaland · Oct 13, 2009

You need an answer to the question about smoke.

If you have poor compression you should have excessive blow by out the vent tube. If the blow by is not excessive then if you are getting the fuel to the engine you should be getting smoke if you can add the fuel. If you have a bad cam or lifters, or if you have restricted air intake, or a bad turbo, all will reduce the air intake and the excessive fuel should cause smoke.

Have you double checked the timing? If the advance in the pump was not ion the retarded position when the pump was installed it is possible that the timing was set late even when the marks lined up.

Larry B 1486 · Oct 13, 2009

Owen. It does not have excessive blow by and uses very little between oil between changes.I have also checked for air restrictions but don't know about the cam or lifters. It does carry good oil pressure even when hot all day long. Someone told me try setting the timming up to 20 deg. but it starts perfect. If it was slow would not that make it hard to start?

bc · Oct 13, 2009

Larry, I think what everyone wants to know is how much smoke and what color it is coming out of the exhaust pipe both under load at full throttle and at idle and if the amount of smoke increases much between idle and full throttle under load.

It's not necessarily oil smoke or oil usuage or oil pressure but to evaluate the pump they want to know the amount of black (or white) diesel smoke it puts out. Then they can judge whether the tractor is not getting enough, getting enough, or getting too much diesel in their experiences.

Blue oil smoke out the exhaust and alot of blue smoke out the blowby tube is only one of the things needed to know to see if your power problems are compression related. The smoke out the exhaust may determine if it is pump related or not.

And then how does the exhaust smoke compare to your other tractor that you say is ok.

Owen Aaland · Oct 13, 2009

(quoted from post at 18:47:13 10/13/09) Larry, I think what everyone wants to know is how much smoke and what color it is coming out of the exhaust pipe both under load at full throttle and at idle and if the amount of smoke increases much between idle and full throttle under load.

It's not necessarily oil smoke or oil usuage or oil pressure but to evaluate the pump they want to know the amount of black (or white) diesel smoke it puts out. Then they can judge whether the tractor is not getting enough, getting enough, or getting too much diesel in their experiences.

Blue oil smoke out the exhaust and alot of blue smoke out the blowby tube is only one of the things needed to know to see if your power problems are compression related. The smoke out the exhaust may determine if it is pump related or not.

And then how does the exhaust smoke compare to your other tractor that you say is ok.

That is exactly what I meant. You just stated it much more clearly.

Larry B 1486 · Oct 13, 2009

bc, the smoke is black under load but very little and about the same at idle under load, the amount really does not change. No blue smoke. Compaired to my other tractors, put my 1466 or even my 856 under a heavy load at low rpm and hit the throttle and the black smoke rolls. Now my 86 under the same, hit the throttle and very little smoke but it is black.

To Tractor Vet- 1486

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Larry B 1486

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Larry B 1486

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