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3010 engine problems.

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dcfl421
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PostPosted: Tue Feb 25, 2014 11:09 am    Post subject: 3010 engine problems. Reply to specific post Reply with quote

IM working on an early model jd 3010 diesel. Tractor came in because the engine was breaking up at higher rpms and was smoking badly. I installed a new injection pump and had injectors rebuilt at an injection shop. THe reman pump has advance so I set timing at 4 degrees btdc. Engine ran smooth until the very peak of full throttle and would break up. It also was hard to start cold and smokes white/blueish smoke like crazy. I turned pump to almost 14 degrees btdc until i got her to run smooth at full throttle. Doesnt seem to be too bad now but is smoking blue at idle pretty good. Im going to let it sit outside tonight and check it in the morning. I also measured valve lift and found some exhaust lobe lift to be out more the 0.100 of an inch. I readjusted valves and got some of them a little better but I still have two over 0.100 out. COuld this be my problem here or could this reman pump be bad? Any info would be very helpfull.
 
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Larry EC-OH
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PostPosted: Tue Feb 25, 2014 11:37 am    Post subject: Re: 3010 engine problems. Reply to specific post Reply with quote

Did you make a typo on the measurement? If the valves really are 0.100 out it"s a wonder it even runs.
 
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dcfl421
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PostPosted: Tue Feb 25, 2014 11:50 am    Post subject: Re: 3010 engine problems. Reply to specific post Reply with quote

the minimum spec for valve lift is 0.400 and i have one that is only 0.300 and one that is only 0.275. checked them all 5 times to make sure. Thought the same thing. If it still smokes in the morning im going to check cylinder compression also.
 
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Mike M
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PostPosted: Tue Feb 25, 2014 12:14 pm    Post subject: Re: 3010 engine problems. Reply to specific post Reply with quote

Well if that is the spec. then the cam must be shot ?
 
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tim s
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PostPosted: Tue Feb 25, 2014 12:23 pm    Post subject: Re: 3010 engine problems. Reply to specific post Reply with quote

Also check the back lash of the oil pump to cam gear if it's worn bad the timing will fluctuate..
 
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ET
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PostPosted: Tue Feb 25, 2014 12:47 pm    Post subject: Re: 3010 engine problems. Reply to specific post Reply with quote

Line up the timing marks in the pump as well as the ones on the flywheel turning the engine in the normal direction of rotation. Then slowly turn the engine backwards till the pump marks start to move. If you have more than a couple degrees of rotation it's too much.
 
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dcfl421
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PostPosted: Tue Feb 25, 2014 12:59 pm    Post subject: Re: 3010 engine problems. Reply to specific post Reply with quote

I checked it and its about6 degrees before pump mark starts moving.
 
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wisbaker
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PostPosted: Tue Feb 25, 2014 2:17 pm    Post subject: Re: 3010 engine problems. Reply to specific post Reply with quote

Before I'd condemn the cam I think I'd check all the rocker arms, pushrods and lifters first. As others have said check the injection pump drive, if somethings loose there it'll allow your timing to wander.
 
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ET
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PostPosted: Tue Feb 25, 2014 2:47 pm    Post subject: Re: 3010 engine problems. Reply to specific post Reply with quote

Thats to much. If the thrust plate on the cam has lost the bolts or they are loose the bevel of the gear will change the timing as the cam floats in and out.
 
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D-
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PostPosted: Tue Feb 25, 2014 4:18 pm    Post subject: Re: 3010 engine problems. Reply to specific post Reply with quote

Pump w/advance should be @ TDC.
 
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dcfl421
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PostPosted: Wed Feb 26, 2014 5:11 am    Post subject: Re: 3010 engine problems. Reply to specific post Reply with quote

I had it at tdc, 4 btdc, 10 btdc, and now its at 14 btdc. It never changed how it starts but at full throttle it would break up really bad until i turned it to 14 btdc now its runs smooth. I went out this morning and same thing ..blows out alot of white grayish smoke and smells like unburnt fuel. Will not start. Going to try a shot of either so i can get her back in the shop and check compression.
 
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dcfl421
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PostPosted: Wed Feb 26, 2014 7:55 am    Post subject: Re: 3010 engine problems. Reply to specific post Reply with quote

checked compression. each cylinder was any where from 350 to 380 psi. After squirting oil in the cyliners i got up to 400 psi. Which makes sense if my compression is low and im now getting the proper fuel with the new pump and injectors it can burn all the fuel up when its cold and thats why it smokes raw fuel out the stack. when its hot it runs better cuz it seal up a little. Between the worn cam and low compression i think im beating a dead horse here. I found complete long blocks with a warranty for only $4600 so i think i may end up going that route. thanks for all the help guys.
 
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Mike M
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PostPosted: Wed Feb 26, 2014 10:34 am    Post subject: Re: 3010 engine problems. Reply to specific post Reply with quote

I would have a few concerns about a reman unit as to who did it and what parts are NEW in it.
Not all rebuilders are equal. Same with warrantys some aren't worth the paper their written on.
 
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tim s
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PostPosted: Wed Feb 26, 2014 12:11 pm    Post subject: Re: 3010 engine problems. Reply to specific post Reply with quote

Exactly....
 
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dcfl421
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PostPosted: Thu Feb 27, 2014 4:44 am    Post subject: Re: 3010 engine problems. Reply to specific post Reply with quote

farmlandtractor.com check it out and let me know what you think.
 
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