Page 1 of 3 123 LastLast
Results 1 to 10 of 28
  1. #1
    Gold Member
    Join Date
    Oct 2007
    Posts
    452
    Location
    North Central Mississippi
    Tractor
    JD 5075E Cab

    Default Help Me Diagnose an Engine Problem

    I own a 2009 JD4320 with 565 hours. Earlier today, I noticed that the engine seems to be running a little "rough". By that, I mean that if it is idling and you depress the foot throttle, it feels a little "rough" as the engine rpm's increase and it feels like it is missing a little. It also feels like is has a little less power and sounds slightly different. Almost like a 8 cylinder gas engine with 1 cylinder missing.

    I don't notice this if I am at 1500 rpm and quickly accelerate to 2600rpm. It may have the same issue at the higher rpm's, but its hard to tell. If the issue is there, it is not as noticeable.

    Since the fuel tank was about 1/4 full, I decided to fill up with fresh fuel, but it runs the same.

    I didn't think the fuel filter would be the problem, but I changed it anyway. However, it didn't fix the problem. Also, the air filter is fine.

    Suggestions?

  2. #2
    Veteran Member
    Join Date
    Dec 2001
    Posts
    1,164
    Location
    Maryland

    Default Re: Help Me Diagnose an Engine Problem

    Sounds like you might have a sticky fuel injector. You might try to add some conditioner to the fuel and see if that helps. I like the Lucas fuel conditioner.

  3. #3
    Platinum Member tomd999's Avatar
    Join Date
    Jul 2007
    Posts
    661
    Location
    Viva Manchvegas!
    Tractor
    '10 3320 cab

    Default Re: Help Me Diagnose an Engine Problem

    Hiya,

    Is it throwing any error codes on the display? As noted, could be a injector on the way out but it could also be carbon build up in the exhaust port blocking flow, valve train part failure, (broken rocker, pushrod, lifter, cam lobe) or bad valve lash adjustment. May want to take a long handle screwdriver, put the tip on the top of the injectors and the handle to your ear, with it idling you should be able to hear the injector blow off it's seat and the knock of detonation of the fuel, listen for one cylinder with a slightly different sound, that's the one you start looking at first.

    Tom
    Big and little Green tractors, Orange tractors and one awesome brown dog.

    "Congelo nos opus, quantum punitor ingravesco"

    "Behold, like the wild azz in the desert, go I forth to my work"

  4. #4
    Gold Member
    Join Date
    Oct 2007
    Posts
    452
    Location
    North Central Mississippi
    Tractor
    JD 5075E Cab

    Default Re: Help Me Diagnose an Engine Problem

    Should I add some seafoam in case an injector is slightly clogged?

  5. #5
    Elite Member whistlepig's Avatar
    Join Date
    Jan 2009
    Posts
    4,267
    Location
    Preble County, Ohio
    Tractor
    Kubota B7800 with FEL

    Default Re: Help Me Diagnose an Engine Problem

    Could be sucking air into the fuel lines. That will make it miss. Look for fuel leaks. If it's leaking fuel it is sometimes sucking air.
    I used to do the Hokey Pokey but I turned myself around.

  6. #6
    Super Star Member
    Join Date
    Feb 2006
    Posts
    10,657
    Location
    VA
    Tractor
    JD2010, Kubota3450,2550, Mahindra 7520 w FEL w Skid Steer QC w/Tilt Tatch, & BH, BX1500

    Default Re: Help Me Diagnose an Engine Problem

    Does it have normai power when its at rated rpm or does it bog easily?
    larry
    This side of 40
    JD2010, Kubota L3450/FEL w SK QC, L2550 w FEL
    Mahindra 7520 [Pinky] /FEL w Skid Steer QC/w Tilt Tatch & BH, BX1500 [Mighty Mouse]
    IH37 Baler, CCM165 Drum Mower, JD Rake
    JD 127 bushog, Flail, SK Tilt Tatch , KK tiller, Rhino rear blade, Post driver, post auger, chipper, pallet fork, Grapple/Loader Buddy, Homemade Splitter/DC Welder

  7. #7
    Gold Member
    Join Date
    Oct 2007
    Posts
    452
    Location
    North Central Mississippi
    Tractor
    JD 5075E Cab

    Default Re: Help Me Diagnose an Engine Problem

    It is not leaking fuel. If it is losing any power at pto speed, its not obvious. It appears to cut with normal power at pto speed. This evening, I was able to cut 5ft tall VERY thick grass. It bogged a little, but nothing I didn't expect.

  8. #8
    Gold Member
    Join Date
    Oct 2007
    Posts
    452
    Location
    North Central Mississippi
    Tractor
    JD 5075E Cab

    Default Re: *** Update*** Help Me Diagnose an Engine Problem

    Well, after exhausting all means to diagnose the problem, I took it to the nearest dealer. They stated it had a "dead cylinder". Further, they are unsure of the cause, but believe the problem is most likely an injector, injector tip, rocker arm or push rod. The bad news is that it will take $400-$600 in labor just to be able to get into the engine enough so they can diagnose the problem!! They have narrowed the problem to "Cylinder 4". Depending on the cause, the price is obviously expected to increase.

    I asked them if they have seen anything like this on a 4000 series Deere and they said no. They said that they NEVER have problems with the 4x20 series and that they are really good tractors. When I inquired about the warranty, they stated it was 2 yrs/2000 hours.

    The tractor is 4 years old, but it has less than 600 hours and the original warranty goes to 2000 hours (within 2 years). I can't help but wonder if this is some type of defect. I should know more next week, but it sure would be nice if John Deere would cover this problem considering only 585 hours are on the tractor even though the "time" expired at 2 years.

  9. #9
    Bronze Member
    Join Date
    Jun 2012
    Posts
    65
    Location
    winona mn
    Tractor
    jd2520

    Default Re: Help Me Diagnose an Engine Problem

    so if you have a car with bad engine that has 70,000 miles on but is only 2 years old and is within the 36 month but exceeds the 36,000 miles warranty should car company honor the warranty.

  10. #10
    Gold Member
    Join Date
    Oct 2007
    Posts
    452
    Location
    North Central Mississippi
    Tractor
    JD 5075E Cab

    Default Re: Help Me Diagnose an Engine Problem

    I'm mostly wanting to update everyone that attempted to help me troubleshoot the initial problem.

    To follow up on the question posed by logankelly, I believe the better comparison would be quite the opposite: A car that has exceeded the 24 month portion of the warranty but has only acquired 10,000 miles of the 100,000 mile portion.

    I understand that they don't have to honor anything. However, I am curious to see whether or not they will see this as a defect that should not have happened (which it obviously is) with such low "mileage" and demonstrate that John Deere does actually value their reputation, name and the quality of their product by doing the right thing.

    If so, should they respond in a reasonable and prudent manner? Or, should they say .....sorry.... I don't care how few hours you have, how well you have maintained your machine or how much we imply that our tractors are better than all others combined- you have exceeded the 24 months portion of the warranty and are completely on your own regardless of any mechanical defect that may exist with our product. By the way, can I interest you in this new and improved model that just arrived on our lot????

Page 1 of 3 123 LastLast

Similar Threads

  1. diagnose my air compressor
    By Haywire in forum Rural Living
    Replies: 19
    Last Post: 08-22-2011, 10:54 AM
  2. Oil & Fuel diagnose injector pump
    By Abe460 in forum Massey Ferguson Owning/Operating
    Replies: 3
    Last Post: 02-12-2011, 09:30 PM
  3. Diagnose My Compact 670 tractor
    By cartod in forum John Deere Owning/Operating
    Replies: 3
    Last Post: 07-27-2010, 06:04 PM
  4. Please Diagnose This Bad Noise
    By jc7622 in forum Montana
    Replies: 5
    Last Post: 06-21-2008, 06:57 PM
  5. mechanical problem - can u diagnose?
    By mdbarb in forum Kubota Owning/Operating
    Replies: 16
    Last Post: 08-18-2005, 10:35 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
© 2016 TractorByNet.com. TractorByNet is a registered trademark of IMC Digital Universe, Inc. Other trademarks on this page are the property of their respective owners.