Not sure but i would check the airgap on the pto clutch. Not sure on spec, Im sure somebody will chime in, I have mine set at .015.
Rick
Rick
1 - 18 of 18 Posts
Robert,
The problem is the glow plugs. When you turn the ignition switch on, the glow plug idiot light stays on for about 10 seconds; however the glow plugs operate for about 45 seconds. Glow plugs warm the air in the cylinder for better combustion while starting and until the combustion itself warms the cylinder.
Another problem is that there is a voltage drop caused by the electrical connections. Refer to this thread I wrote about my 332. A 455 would be the same.
http://www.wfmachines.com/discus/messages/96042/263087.html?1199455753
When it is cold, I let the glow plugs go through a couple 30 second cycles before attempting to start.
Whenever I buy another 455, I usually just change the glow since newer ones will work better. A simple ohm meter test can be done to check them.
George of Buford
PS Right now I own four 455's and speak from experience.
![]()
The problem is the glow plugs. When you turn the ignition switch on, the glow plug idiot light stays on for about 10 seconds; however the glow plugs operate for about 45 seconds. Glow plugs warm the air in the cylinder for better combustion while starting and until the combustion itself warms the cylinder.
Another problem is that there is a voltage drop caused by the electrical connections. Refer to this thread I wrote about my 332. A 455 would be the same.
http://www.wfmachines.com/discus/messages/96042/263087.html?1199455753
When it is cold, I let the glow plugs go through a couple 30 second cycles before attempting to start.
Whenever I buy another 455, I usually just change the glow since newer ones will work better. A simple ohm meter test can be done to check them.
George of Buford
PS Right now I own four 455's and speak from experience.
Robert,
The JD part # for the glow plugs is M87919 which cost around $43 each. I cleaned the paint off an old one and found the OEM part is an NGK Y702R. You can get them from ngk.com for around $25 each.
Changing glow plugs is about like replacing spark plugs. If one is bad, I go ahead and change all three. If one failed, another will probably fail soon. The old ones are usually coated with soot that insulates the tip. The last 455 I bought had 1800 hours and was a 1996 model with the ORIGINAL glow plugs. That is 17 years of service. If I change them now, I will never need to do it again.
Another poor cold starting cause is poor compression. My oldest 455 has around 3000 hours and starts much harder than my newer ones. I did a compression check and found it is a little low. The engine runs great but is hard starting in cold weather.
George of Buford
![]()
The JD part # for the glow plugs is M87919 which cost around $43 each. I cleaned the paint off an old one and found the OEM part is an NGK Y702R. You can get them from ngk.com for around $25 each.
Changing glow plugs is about like replacing spark plugs. If one is bad, I go ahead and change all three. If one failed, another will probably fail soon. The old ones are usually coated with soot that insulates the tip. The last 455 I bought had 1800 hours and was a 1996 model with the ORIGINAL glow plugs. That is 17 years of service. If I change them now, I will never need to do it again.
Another poor cold starting cause is poor compression. My oldest 455 has around 3000 hours and starts much harder than my newer ones. I did a compression check and found it is a little low. The engine runs great but is hard starting in cold weather.
George of Buford
1 - 18 of 18 Posts
