John deere 3520 very hard to start but when it does eventually runs normal

   / John deere 3520 very hard to start but when it does eventually runs normal #1  

joey14036

New member
Joined
May 25, 2022
Messages
6
Tractor
john deere 3520
Jd 3520 bought at auction. hydro diesel. turns over and eventually starts little blue smoke and when it fires it seems to idle fine. it just takes a minute or more of turning over and eventually starts. acting like its extremely cold out but its summer time so i know thats no the issue.
 
   / John deere 3520 very hard to start but when it does eventually runs normal #2  

true temper

Silver Member
Joined
Jul 22, 2006
Messages
122
Location
SW Kansas
Tractor
Kubota L3430
Motor has been dusted, basically junk. That’s why it was at the auction. Rebuild it, live with it or take it back to the auction.
 
   / John deere 3520 very hard to start but when it does eventually runs normal #3  

Roadworthy

Elite Member
Joined
Aug 24, 2019
Messages
2,797
Location
Southeast Washington
Tractor
Kubota L2501 HST,
Welcome to TBN. How many hours are on the tractor? Check your air filter. I suspect your tractor has glow plugs. Do they activate automatically or must you engage them manually? An owner's manual should tell you that and give starting procedure. Are the glow plugs still good? It sounds like the engine is not preheating.
 
   / John deere 3520 very hard to start but when it does eventually runs normal #4  

thepumpguysc

Elite Member
Joined
Apr 14, 2010
Messages
2,571
Location
South Carolina
Tractor
Injection Pump Rebuilder
Glow plugs, supply pump (if equipped) Bleed back..
it’ll b easies to diagnose if u tell us what YOU’VE DONE..
 
   / John deere 3520 very hard to start but when it does eventually runs normal
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joey14036

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Joined
May 25, 2022
Messages
6
Tractor
john deere 3520
I havent done much to the tractor as of yet. it has 728 hours on it. i picked it up from auction and dropped it in barn. i plan on going over fuel lines, filter etc this upcoming weekend...
 
   / John deere 3520 very hard to start but when it does eventually runs normal
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J

joey14036

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May 25, 2022
Messages
6
Tractor
john deere 3520
It has manual glow plugs on it where you have to push the key in to activate them...
 
   / John deere 3520 very hard to start but when it does eventually runs normal
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joey14036

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Joined
May 25, 2022
Messages
6
Tractor
john deere 3520
Welcome to TBN. How many hours are on the tractor? Check your air filter. I suspect your tractor has glow plugs. Do they activate automatically or must you engage them manually? An owner's manual should tell you that and give starting procedure. Are the glow plugs still good? It sounds like the engine is not preheating.
728 hours. manual glow plug. I was in a time crunch when picking up and dropping off tractor in my barn so I plan on going through the usual suspects of fuel, air filters etc. this weekend. Came on here for ideas incase none of those fix my problem
 
   / John deere 3520 very hard to start but when it does eventually runs normal #8  

LouNY

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Joined
Jul 4, 2015
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7,864
Location
Greenwich, NY
Tractor
Branson 8050, IH 574, Oliver 1550 Diesel Utility (traded in on Branson)
Run them for 5-10 seconds and see if it helps, maybe even 10-20.
 
   / John deere 3520 very hard to start but when it does eventually runs normal #9  

Spanner

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Joined
Jul 2, 2017
Messages
1,467
Location
Auckland, NZ
Tractor
John Deere
It has manual glow plugs on it where you have to push the key in to activate them...
Rather than Glow Plugs I think the 3520 has the Air Intake Heater device on top of the intake manifold, A single wire connects to the terminal.
You need to verify if the heater is actually working.
Test for power at the connection to the heater when you press the key in. (Multi-meter or Test light)
 
   / John deere 3520 very hard to start but when it does eventually runs normal
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joey14036

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Joined
May 25, 2022
Messages
6
Tractor
john deere 3520
Rather than Glow Plugs I think the 3520 has the Air Intake Heater device on top of the intake manifold, A single wire connects to the terminal.
You need to verify if the heater is actually working.
Test for power at the connection to the heater when you press the key in. (Multi-meter or Test light)
ok I will give that a try. Thanks for the idea.
 
 
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