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Deere 35D trouble starting

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cptotr

Active Member
Joined
Dec 20, 2015
Messages
30
Location
Missouri
Checking in to see if anyone has some advice. I have a 2014 Deere 35D with around 900 hours on it. Over the last month or so it has slowly taken longer and longer to start in the mornings. Then once it's started it usually starts immediately after turning the key the rest of the day. Yesterday it did the same thing, but after it sat for a few hours it took about 10 seconds of cranking to get it to start again to move it at the end of the day.

This morning it wouldn't start. Tried cranking for a while and it never really even sputtered or tried to start. I recently changed fuel filter to see if it helped, which it didn't. Anyone have any ideas on where to start?
 
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cptotr

Active Member
Joined
Dec 20, 2015
Messages
30
Location
Missouri
I'm not exactly sure how to check them, but I do used them before trying to start for the first time in the mornings. Almost seems like it is losing fuel pressure the longer it sits.
 
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DeereJohn

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Dec 10, 2014
Messages
43
Location
PA
These machines typically start like a champ, I would suggest checking the fittings on the fuel filter housing, they are pressed in and can come loose causing you loose prime/leak fuel. Deere has an updated part with screw in fittings.
 
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cptotr

Active Member
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Dec 20, 2015
Messages
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Location
Missouri
Fuel should be good. I usually pump it from my transfer tank in my truck and haven't had any issues with my other equipment. As far as the electric primer pump goes, it's at least getting power and trying to pump. I can hear it running when I turn the key on. Is there something else or another way I can check on it to make sure it's actually working?
 
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cptotr

Active Member
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Dec 20, 2015
Messages
30
Location
Missouri
After trying everything I could do, I finally had the local equipment dealer come out and diagnose it. They tried several theories and came to the conclusion that it's an injection pump. They originally thought it could be a low pressure pump and decided to try that first. Electronic transfer pump works and pumps fuel. My machine only has around 900 hours on it. That seems a little premature for an injection pump to go out. I have to get it fixed, so if that's what it is I'll just have to live with it. He said the part is $3100. That's a lot of money to just throw at it unless it's certain that's the problem. I just don't want to throw new parts and money at it and hope one of them fixes it. Anything else you all think I should try first? Does that sound high for the cost of an injection pump?
 
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thepumpguysc

Senior Member
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Mar 18, 2010
Messages
7,535
Location
Sunny South Carolina
Occupation
Master Inj.Pump rebuilder
LOL... "the fuel should be good".. lol
The famous last words from a fella getting ready to blow $3100.00!!!!
I fixed one last week that only cost the guy 165.00 & had 300 HOURS on it.. clogged screen in the tank outlet..
I'll send you my email address>> send me a picture of the injection pump.
 
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cptotr

Active Member
Joined
Dec 20, 2015
Messages
30
Location
Missouri
I agree with you on that. I should spend some more time eliminating some simple problems. Would it only have problems starting on the first start of the day if it was a clogged screen or some other problem of that nature? Would that even be indicative of a injection pump problem? It seems more like a bleed off of fuel pressure or something like that, but I just don't know.
 
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thepumpguysc

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Messages
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Master Inj.Pump rebuilder
You are correct in your assumptions. It would happen at 1st start up.. & then bleed back overnite.. IF it was a "supply" problem..
I would replace the "lift pump/supply pump".. Or at the very least, check the pressure coming out of it, going into the inj. pump..
There is an electric shut off solenoid on the back of that pump.. its held on by 2 or 3 10mm bolts,, REMOVE IT.
See if it starts.. if it doesn't start right away, STOP..
Right above the name plate is a big nut.. 22-23mm-7/8-15/16?? THATS your overflow valve.. IF it gets stuck{VERY COMMON} it will give you the same symptoms. All it is, is a nut, gasket. spring & plunger/piston..
Remove the nut & spring.. & w/ a strong pencil magnet, see if the plunger/piston will come out..{slides}
If its stuck, you found the problem, water in the "good fuel".. lol
Tap it in, work it out, some spray will help.. NOW turn the key on to flush the system, turn the key off & put everything back together.. now try to start it..
Let us know..
 
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cptotr

Active Member
Joined
Dec 20, 2015
Messages
30
Location
Missouri
I went out to where the machine was to see if any of the suggestions would help out.

I removed the electronic shutoff solenoid. It did not allow it to start.

I then opened up the overflow valve. The plunger was not stuck. It was moving in and out freely. I turned the key in and it was pumping what appeared to be good fuel out of the overflow. I put everything back together and still didn't have any luck starting.

Thanks a lot for all your suggestions. Unfortunately we'll have to try some other things to find out what's wrong. Any thoughts or something else to check on?
 
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thepumpguysc

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Messages
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Sunny South Carolina
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Master Inj.Pump rebuilder
WELL Damn.!!! we tried..
In the solenoid hole..you can take your finger & TRY to move the control rack..
That's the piece the solenoid hits on.. if you can move IT.. it should pump fuel..
IF NOT.. the rack is stuck & nuttin' you can do.. the pump is pretty complicated to try to explain the dismantling.
IF the pump has to come off.. the timing is CRITICAL.. I have the manual on my computer & would be happy to shoot it to ya..
Thanks for getting back w/ us..
 
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cptotr

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Dec 20, 2015
Messages
30
Location
Missouri
I actually did try pushing that in. It was moving freely.

The manual would be great if you could. Did you get my email I sent you the other day? If so, send it to that email address. If you have any other suggestions or tips it would be greatly appreciated. Thanks for all your help so far.
 
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cptotr

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Messages
30
Location
Missouri
Just reporting back. After having the dealer and several other people look at it, everyone determined it was an injection pump problem. Not wanting to buy a new pump, we sent my pump off and had it rebuilt. Once they received it, they could not find much of anything wrong with it. Since they had it, they replaced the tappet assembly and put in a new gasket kit. They also ran it on a test stand and concluded that the pump was in good working condition, so that eliminates that problem.

However, we put it all back together and it's still doing the same thing. Only way we can get it to start is with a little ether. We did find that there was a plastic boot that has a hose on each end connecting the breather assembly to the intake. It sits close to the muffler and has a hole the size of a baseball melted in it. Clearly a poor design and a problem I would think others would have too. Upon looking down in the intake, you can see its just full of dust and trash. I'm wondering now much of that has been getting down into the motor and what I should do from here. Anyone have any suggestions? Anyone else have this problem with their machine?
 
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thepumpguysc

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Messages
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Location
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Master Inj.Pump rebuilder
The odd thing about your write-up is> "they replaced the tappet"..
You just don't "replace a tappet".. for no reason..
Bummer on the problem tho..
 
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Clguest

Well-Known Member
Joined
Feb 2, 2016
Messages
116
Location
USA
cptotr said:
Just reporting back. After having the dealer and several other people look at it, everyone determined it was an injection pump problem. Not wanting to buy a new pump, we sent my pump off and had it rebuilt. Once they received it, they could not find much of anything wrong with it. Since they had it, they replaced the tappet assembly and put in a new gasket kit. They also ran it on a test stand and concluded that the pump was in good working condition, so that eliminates that problem.

However, we put it all back together and it's still doing the same thing. Only way we can get it to start is with a little ether. We did find that there was a plastic boot that has a hose on each end connecting the breather assembly to the intake. It sits close to the muffler and has a hole the size of a baseball melted in it. Clearly a poor design and a problem I would think others would have too. Upon looking down in the intake, you can see its just full of dust and trash. I'm wondering now much of that has been getting down into the motor and what I should do from here. Anyone have any suggestions? Anyone else have this problem with their machine?
Click to expand...
Seems that if the injection pump is good and if timing is right the next step is to check injector nozzles and cylinder pressure. Since ether enables it to start you can not be too far from a solution.
 
Rentalstop

Rentalstop

Well-Known Member
Joined
Nov 25, 2015
Messages
114
Location
Sunbury, OH
I would replace the fuel solenoid. We have a Deere 17D that was increasingly difficult to start. The way I understand the solenoid, it requires higher voltage at startup and lower voltage to continue working.
We changed the solenoid and works like new.
The part number looks like M810324 for your machine. About $130. Plug and play. It's worth a shot.
Cheaper and easier than injectors. YMMV.
 
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