Tractor wont start after it warms or gets hot....

jdonelson

Forum Newbie
Joined
Jun 23, 2014
Threads
1
Messages
1
Hello forum, I have a Craftsman tractor (917.252451) It just recently started doing this. I have been doing some research and have tried to fix the problem but have been unsuccessful. This is what it is doing. After the tractor turns off when I go to restart it I turn the key and there is no sound at all. Doesn't even try to turn over. If the tractor sits over night I can go out there turn the key and it fires up no problem. Even after it sits for a few hours it still wont start. I have replaced the battery, and ignition coil and spark plug. In my research I can across something saying that it could also be a vapor lock in the fuel system. Was advised to try to start it without the fuel cap. Still nothing. I have also recently replaced the fuel line and fuel filter. I did go with a smaller internal diameter fuel and made the fuel line a few inches longer but I don't think that could be the issue. Any other ideas guys? I really appreciate it. Thanks!
 

Rivets

Lawn Royalty
Joined
Mar 11, 2012
Threads
55
Messages
14,802
To me this sounds like a hot open issue, which is not always easy to find. What I feel is happening, is a connection is loosing continuity when hot, causing an open circuit. You will need to check every connection very closely and also look for a bad wire. The first connection I would check is the ground wire on the chassis, taking it off, cleaning and reassemble, making sure it is tight. This troubleshooting procedure may also help. Good luck.


Electrical* problems can be very easy or very difficult, depending on four things.
1. * How well you understand basic electricity.
2. *What tools you have and know how to use.
3. *How well you follow directions.
4. *You don't overlook or assume anything and verify everything.

Remember we cannot see what you are doing. *You are our eyes, ears and fingers in solving this problem. *You must be as accurate as you can when you report back. *The two basic tools we will ask you to use are a test light and a multi-meter. *If you have an assistant when going through these tests it would be very helpful. *These steps work the best when done in order, so please don't jump around. *Now let's solve this problem.

First, check the fuse(s), check battery connections for corrosion (clean if necessary) and *voltage - above 12.5 volts should be good.*

Second, check for power from the battery to one of the large terminals on the solenoid. *One of the wires is connected directly to the battery and has power all the time so one of the large terminals should light a test light or show 12 volts on a meter at all times.*

Third, *check for power at the small terminal of the solenoid while depressing the clutch/brake pedal and holding the key in the start position (you may need an assistant to sit in the seat to override the safety switch). If your solenoid is a four wire solenoid, check both small wire terminals as one is ground and the other is power from the ignition switch. *If your solenoid is a three wire solenoid, make sure the solenoid body is not corroded where it bolts to the chassis of the mower as this is your ground path back to the battery. *If in doubt, remove the solenoid and clean the mounting area down to bare metal. *If there is no power to the small terminal then your problem is most likely a safety switch, ignition switch or in the wiring.*

Fourth, check for power on the other large terminal of the solenoid while holding the key in the start position (you may need an assistant to sit in the seat to override the safety switch).*

Fifth, check for power at the starter while holding the key in the start position (assistant again).*

Sixth, check your ground circuit back to the battery.

After you have gone through each of the above steps, let us know what happened when you did each step. *At that point we will have great info to tell you how to proceed. *Remember you are our eyes, ears, and fingers, so please be as accurate as possible.

Be as specific as possible with voltage readings as this will help diagnose your problem quicker. *If you do not know how to perform the above checks, just ask and I will try to guide you through it. *Youtube also has some videos and as you know a picture is worth a thousand words.
 

snzip

Forum Newbie
Joined
Jun 6, 2014
Threads
1
Messages
6
  • / Tractor wont start after it warms or gets hot....
Could be the coil. They SOMETIMES fail when hot. "Rivets" had good trouble shooting info.... I'd suggest checking immediately after it quits..... Dean
 
Top