John Deere 425 - firing on one cylinder
walt72
13 years ago
Featured Answer
Sort by:Oldest
Comments (18)
walt2002
13 years agomownie
13 years agoRelated Discussions
John deere 285 Kawasaki 590V no fire left cylinder
Comments (4)Before searching for any kill wire circuitry, don't bother looking. This ignition system is a true "battery and coil" ignition system. It does not feature the type of kill wire grounding facility necessary to defeat spark for stopping the engine as magneto based ignition systems have. In this Kaw ignition system, the "pulsar coils" are only "pick up coils" and do nothing but sense the position of the crankshaft by means of the reluctor mass passing near the pulsar. In fact, it would be entirely appropriate to call the pulsar a Crankshaft Position Sensor. The passing mass of the reluctor section affects the low level electromagnetism of the pulsar and in this manner provides a firing signal to the ignition module (aka igniter). The igniter is the component that controls when current is provided to each respective ignition coil to saturate the coil, and the igniter breaks the circuit feeding each coil at the proper moment so that a spark will be delivered to the spark plug. All the testing you have done is pointing to a defective igniter....See MoreJohn Deere 425 Mower Problems
Comments (69)This is my first time on here, so I don't exactly know how to post so here goes. My JD-425 has a flooding problem. Sometimes it runs ok, and sometimes not. When I turn on the ignition, the fuel pump starts (as normal) and I can usually start it. Then, after running for a while, it begins flooding. This is between 15 minutes and half an hour most of the time. I can keep it running if I go full throttle and have the tractor under load, like mowing grass, but there is so much gas entering the carb that there is a bit of black smoke as well. If I stop it and remove the air cleaner, and look into the carb, there is gas everywhere. Here is what I did so far... The carb was new 3 years ago. But I removed it, and took it apart (did this 3 times). Each time I took it apart and put it back together, I know I did it right because the machine started and ran as noted above. I thought it just might be plugged or something. The first time I took it apart I also replaced the electric solenoid valve, just to be sure. And I know it works, because I saw it operating with the carb disassembled. Then, I thought it might be that the float valve was leaking or perhaps the floats had a hole and was full of gas. All was good. When the carb was back together, I blew into the fuel hose when the carb was full of gas and proved that the float valve was working. Hmmm. There is a manual in-line fuel shutoff valve, so what I did was throttle it back so that it would take 30 seconds to to let about an ounce of fuel out. Full blast, the pump actually pumps a lot of fuel. This time, I was able to keep the machine from flooding too bad. And was able to mow the 1 acre of grass I have. Today, however was different. It ran for about 5 minutes, then began to act up. I turned it off, removed the air cleaner and looked into the carb. When I turn the ignition switch on, (not engaging the starter) I can see tons of gas coming out of every carb orifice, flooding into the engine gas everywhere. This is without the engine running. The only thing I can come up with is that the fuel pump for some unknown reason has too much pressure behind it. Another wierd thing is that when I turn a sharp corner, under the flooding condition, the flooding gets noticably worse. Any ideas anyone? Is there a pressure regulator somewhere in the fuel pump line? Thanks....See MoreJohn Deere 425 blown head gasket?
Comments (13)Just a follow-up to my original posts. I called the Deere dealer after not hearing from him for a week. He still doesn't know how much it will cost to fix and whether he can do it. He says the water pump and cam are shot which is not surprising at 1400 hours (especially with plastic cam parts) but he also says the crank shaft is shot which sound dubious. He said he would call me back when he knew, but when I called him back to ask how much a new tractor was, his voice brightened considerably and he had the sales rep on the phone with me in 2 minutes. Given the chimera that will result from cobbled parts, we'll probably purchase a new x720. Thanks mownie 7, I believe you had it right in that the water pump was worn and potentially leaking into the engine (I did need to top off the coolant from time to time). Who would suspect that a water pump could cause the entire engine to go (if the dealer is telling the truth). Also, a water pump failure would cause the temp gauge to rise while the engine continued to run. I still think crank shaft replacement is dubious, but he has me over a barrel and clearly wants to sell a new machine. Ultimately, I had 11 exceptional years of service from this machine. I worked it hard and it never complained. I'm still a Deere fan in spite of NYC service deficiencies....See MoreJohn Deere 425 hard start
Comments (5)the problem u are havening is in the carburetor, you will have to remove the float and needle the is a o ring above the white cover that holes the needle and float to you will have to remove it from the carburetor and replace it john Deere have that part i just repair my 425, you can get the hole unit it's around 15 bucks, and make sure that the fuel shut off valve on the bowel isn't stuck. hope this help, I've repaired a few mower with that problem....See MoreKLW1
11 years agobill_kapaun
11 years agotomplum
11 years agoaws425
11 years agobjlewis101
11 years agotomplum
10 years agojerryhuddleston65
8 years agomacsrgr8
8 years ago
Bobby Parnell
6 years agoTimothy Sean
5 years agolast modified: 5 years agossewalk1
5 years agoHU-40171493
5 years agoHU-913159304
5 years ago
Tommy Minton
4 years agolast modified: 4 years agossewalk1
4 years ago
Related Stories
FIREPLACESUpdated Woodstoves Keep Home Fires Burning
Better technology means more efficiency than ever for modern woodstoves
Full Story
GREEN BUILDINGBuilding Green: How to Design a Healthier Landscape
Plant selection, water management, fire-prevention measures and more can ensure that your landscape is good for the planet and for you
Full Story
GREAT HOME PROJECTSHow to Create a Secret Doorway Behind a Bookcase
Hide your valuables (or unsightly necessities) in a room or nook that no one will guess is there
Full Story
EDIBLE GARDENSSummer Crops: How to Grow Tomatoes
Plant tomato seedlings in spring for one of the best tastes of summer, fresh from your backyard
Full Story
HOUZZ TOURSHouzz Tour: Prairie Grain Bin Turned Bucolic Retirement Home
An agrarian structure and a big dream combine in this one-of-a-kind home that celebrates 250 acres of Montana grasslands
Full Story
CONTRACTOR TIPS6 Lessons Learned From a Master Suite Remodel
One project yields some universal truths about the remodeling process
Full Story
PHOTO FLIP94 Dream Bedscapes
Picture yourself in one of these settings for a stylish night’s sleep
Full Story
HOUZZ TVHouzz TV: A Most Unusual Indoor-Outdoor Connection
A giant California Sycamore grows through this dream house in the hills of Los Angeles
Full Story
HOUZZ TOURSHouzz Tour: Texas Family Trades Traffic Noise for Frog Songs
Modern glass and stone structures hug two waterways on a sprawling Texas Hill Country compound
Full Story
TRADITIONAL ARCHITECTURERoots of Style: Pueblo Revival Architecture Welcomes Modern Life
Centuries-old details of adobe construction still appeal in the desert Southwest, adapted to today's tastes
Full StorySponsored
More Discussions
floorit