Compression Gone in Rear Cyl: John Deere Gator  -- Utility ATV Discussion Forum and Review Compression Gone in Rear Cyl: John Deere Gator -- Utility ATV Discussion Forum

  parts   |   manuals   |   discussion   |   photos   |   podcast   |   reviews   |   specs   |   dealers   |   classifieds   |   contact   |   faq   |   myProfile   |   home          Login Now | Sign Up


FAQ:   What is a tractor?

Forum Index

Kubota Tractors
  Kubota News
  Kubota Price
  Kubota Review
John Deere Tractors
  John Deere News
  John Deere Price
  John Deere Review
New Holland Tractors
  New Holland Tractor Price
  New Holland Tractor Revie
Other Tractor Brands
  Articulated Tractors
  Belarus
  Bobcat Tractors
  Case
  Cub Cadet
  Hinomoto
  Kioti Tractor
  Long
  Massey Ferguson
  Mitsubishi
  Other Tractor Brands
  Other Tractor News
  Shibaura
  Yanmar Tractors
Lawn and Garden Tractors
  Craftsman
  Cub Cadet Garden
  John Deere Garden
  Kubota Lawn Garden
  Other Garden Tractors
  Simplicity
  Toro Wheelhorse
  Ventrac Lawn Tractors
Antique Tractors
  Allis Chalmers
  Case David Brown
  Farmall IHC
  Ford
  Ford 9N 2N 8N
  Fordson
  Harry Ferguson
  John Deere Older
  Massey-Harris Ferguson
  Minneapolis Moline
  Oliver Cletrac Cockshutt
  Restoration
  Tractor Pulling
Tractor Attachments Implements 3ph
  Back Hoe
  Field Mowers Brush Cutter
  Grooming Mowers Finish Mo
  Loaders
  Snowblowers / Snow Plows
  Tillers and Ploughs
  Tractor Implements
  Trenchers
  Wood Chippers 3PH
Tractor Maintenance
  Diesel Fuel Lubrication E
  Tractor Engine Repair Reb
  Tractor Tires
Utility ATV
  All Terrain Vehicles
  John Deere Gator
  Mule Utility Vehicles
General Tractor
  Farming Ranching Agricult
  Photo Contest
  Size Tractor Needed
  Tractor Projects
  Tractor Safety
  Welding
Chinese Tractors
  Jinma Farmpro Agracat
  NorTrac Tractors
  Other Chinese Tractors
Cars
  All Brands
  Audi VW
  BMW
  Car Tires and Maintenance
  Chrysler
  Exotic, Sports, Racing
  Ford Cars
  General Motors
  Honda
  Hyundai
  Mercedes
  News
  Nissan
  Subaru
  SUV and Trucks
  Toyota Cars
Trucks Trailers
  Chevy Pickup Trucks
  Dodge Pickup Trucks
  Ford Pickup Trucks
  Toyota Pickup Trucks
  Chevy Pickup Trucks
  Dodge Pickup Trucks
  Ford Pickup Trucks
  Toyota Pickup Trucks
Home Building
  Alternate Electric Energy
  Barns Pole Barns
  Buying Ranch Farm Acreage
  Carpentry
  Contractors
  Electric
  Excavation
  Moldings Finish Trim
  Other Home Building
  Pellet Stoves
  Plumbing
  Wood Stoves
Tools
  Electirc Power Tools
  Gas Power Tools
  Generators
  Shop Tools
  Techniques Howto
Landscape
  Flowers Shrubs Garden
  Golf Course Maintenance
  Irrigation Systems
  Landscape Design
  Landscape Lighting
  Landscape Maintenance
  Lawn, Turf, and Grass
  Vegetable Gardening
Construction
  Caterpillar
  Komatsu
  Wheel Loaders
Current Events Health Happiness
  Current Events
  Dogs and other Pets
  Electronics And Computers
  Food
  Health
  Just For Fun Off Topic
  Movies Music Games
  Personal Finance Investme
  Sports Outdoors
Tractorpoint Site
  Member Photos
  Site Members
  Website Operations Howto


New As Posted | Active Subjects



Click to Post a New Message!

Discussion Boards > Active Subjects > Messages as Posted > John Deere Gator Forum

Page [ 1 ] |
Reply | Pop Up Window Reply | Add PhotoAdd Photo
 06-08-2009, 07:21 Post: 163284
vnveagleye



Join Date: Jun 2009
Location: Virginia
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster
Posts: 4

3
Filter by User
 Compression Gone in Rear Cyl

We have a 6X4, got it in 1996, gas model. Had an ongoing prob with the back plug fouling, JD sent us a tech memo that changed the plugs to an NGK and gapped at 40. We put this unit into heavy use, winter in the forest. Last week it dropped the rear one again, chg plug did not fix. Did a compression ck and 160 in front and near 0 on the rear. Looks like either a blown cyl or stuck valve. Has about 575 hrs. Thinking about a new motor, see where there are some upgrades in HP, on at 27 and another at 20. Did JD upgrade or is this strickly after market?






Reply to PostReply | Quote Post Reply to PostQuote Reply | Add PhotoAdd Photo




Bookmarks: Digg It | Del.icio.us |
 06-08-2009, 08:10 Post: 163286
gatoraider



Join Date: Nov 2008
Location: Maryland
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster
Posts: 529

3
Filter by User
 Compression Gone in Rear Cyl

There is a repower kit on line for around 2500.00. There is a 27 HP out there like you say. Check thegatorguy.net for rebuilt motors.






Reply to PostReply | Quote Post Reply to PostQuote Reply | Add PhotoAdd Photo




Bookmarks: Digg It | Del.icio.us |
 06-08-2009, 19:59 Post: 163314
vnveagleye



Join Date: Jun 2009
Location: Virginia
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster
Posts: 4

3
Filter by User
 Compression Gone in Rear Cyl

Stopped at the JD Dealer and got the parts breakdown sheets on the motor and valve train. Took the valve cover off and the push rod for the intake valve was loose. The valve was real spongy when depressed, not returning like the ex one. Took the cyl head off, pulled the keepers and removed the intake valve. At first it would not come out smoothly, like some kind of glue got in there. Took some cleaner and then it worked ok. The rubber seal under the spring is suspect since it looks like it might have moved upward, seems like it should have moved down but not sure how this thing is installed. Still cannot get the lower retainer up over it. Will call and discuss with dealer in the am.
NOTE Even after replacing the push rod and cycling the engine I did not get a really high comp reading. But all parts on the lower end look good.
Will keep post with resultz.






Reply to PostReply | Quote Post Reply to PostQuote Reply | Add PhotoAdd Photo




Bookmarks: Digg It | Del.icio.us |
 06-09-2009, 05:36 Post: 163322
gatoraider



Join Date: Nov 2008
Location: Maryland
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster
Posts: 529

3
Filter by User
 Compression Gone in Rear Cyl

Just take a screwdriver and pry that old seal off. There is a lip on the valve guide that holds it on. The new one just fits down over the lip and the little spring around it holds it in place. Maybe when the valve wasn't working properly the seat or the valve face got damaged. You could have damaged the head gasket too. Is the push rod bent? The valve springs wear out also. You really aren't gaining anything if you take that bottom retainer, as you call it, off. It is just a locator for the valve spring, nothing under it.






Reply to PostReply | Quote Post Reply to PostQuote Reply | Add PhotoAdd Photo




Bookmarks: Digg It | Del.icio.us |
 06-11-2009, 15:49 Post: 163375
vnveagleye



Join Date: Jun 2009
Location: Virginia
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster
Posts: 4

3
Filter by User
 Compression Gone in Rear Cyl

OK, took the head off, cleaned up everything, got the new seals, gaskets and reassembled. The valve, push rod all look straight and in good shape. Dealer was most helpful.
Waiting for the new oil filter to arrive by wife express from town and then will see how it all works.






Reply to PostReply | Quote Post Reply to PostQuote Reply | Add PhotoAdd Photo




Bookmarks: Digg It | Del.icio.us |
 06-11-2009, 17:54 Post: 163379
gatoraider



Join Date: Nov 2008
Location: Maryland
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster
Posts: 529

3
Filter by User
 Compression Gone in Rear Cyl

Both intake and exhaust valves need to be at .010 cold.






Reply to PostReply | Quote Post Reply to PostQuote Reply | Add PhotoAdd Photo




Bookmarks: Digg It | Del.icio.us |
Reply | Pop Up Window Reply | Add PhotoAdd Photo


Page [ 1 ] |

Discussion Boards > Active Subjects > Messages as Posted > John Deere Gator Forum

Thread 163284 Filter by Poster:
gatoraider 3 | vnveagleye 3 |

 (advanced search)

Picture of the Day
videorov

Belarus - How do I get this part off the tractor so I can install a new one
How do I get this part off the tractor so I can install a new one


Unanswered Questions

Belarus 825 - needs a new clut
Drain Cock
Need more hydraulic flow for s
HINOMOTO HB 501
Belarus 420A - Problems bleed

Active Subjects

460 Long hyd leak
460 axle
Key will not start engine
6x4 engine rebuild vsHarbor Fr
Things we say and what do they
The Plus and Minus of Ignoring
Looking to buy a New Pickup Tr
Need more hydraulic flow for s


Hot Topics

Tractor Category 1 2 3 Hitch s
Duerr hp 678 Chipper replaceme
Gator 620i gas in engine oil
KUBOTA Tractor Trouble Free Qu
Gator 6x4 Overheating problem
Duerr hp 678 Chipper Manual
Adjusting 7308 Pressure Relief
Long 460 hydraulic problem


Featured Suppliers

Mountain Creek Labradoodles
      MountainCreekLabradoodles.com





New Forums on Gun Sport Shooting and Hunting -- BarrelPoint.com  New Forums on Horses ManePoint.com
Talk Horses at ManePoint
Hunting + Gun Sports at BarrelPoint



Most Viewed

+ Gator 620i gas in engine oil
+ JD Gator only runs with choke
+ John deere amt600 5 Wheel gator
+ Clutch Adjustment
+ TH6X4 wiring diagram
+ Gator 6x4 Overheating problem
+ John Deere Gator XUV aftermarket performance parts
+ JD Gator XUV 825i Noise
+ Kawaski Motor
+ clutch motor

Most Discussion

+ Gator 620i gas in engine oil
+ JD Gator only runs with choke
+ Snapping noise in front and re
+ First Gator
+ clutch motor
+ snow plow wiring
+ Just picked up a 2000 6x4 with
+ e gator power
+ Gator won t idle
+ Input shaft spline or keyed

Newest Topics

+ 6x4 engine rebuild vsHarbor Freight 22HP
+ 2004 Gator 6x4 Gas Pops Out of FandR Gear
+ type of fluid for transmission 07 4x2 gator kawa m
+ 6x4 engine rebuild
+ Heat shields for 3tne68 in gator
+ Clutch Rebuild on a 2004 HPX
+ Where to have Yanmar Injectors cleanedchecked
+ 2000 6x4 gator Spreader bar between engine and tra
+ Starter sometimes clicks but won t start AMT600
+ gator 550 xuv exhaust problem
















Turbochargers for Tractors and Industrial Machines
Cab Glass for Tractors and Industrial Machines

Alternators for Tractors and Industrial Machines
Radiators for Tractors and Industrial Machines

Driveline Components for Tractors and Industrial Machines
Starter Motors for Tractors and Industrial Machines