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mower quits when it warms up


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#1 terrijanson OFFLINE  

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Posted June 17, 2016 - 11:14 AM

I have a 1974 International Cub Cadet.  When the mower warms up it back fires then stalls and will not start up again until it is cool.  We replaced the coil and condenser. Cleaned out the gas tank.  Any ideas? 



#2 DennyIN OFFLINE  

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Posted June 17, 2016 - 11:56 AM

Replace the wire from the points to the coil.


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#3 tater195 ONLINE  

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Posted June 17, 2016 - 11:57 AM

Check for blown head gasket. You can do a cold / hot compression test if you have the equipment. if you don't, look around where the head mates up to the cylinder. You will probably see signs of carbon where it is leaking


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#4 lrhredjb OFFLINE  

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Posted June 17, 2016 - 02:08 PM

Also check valve adjustment. If it is too close, when the motor gets hot they may not be closing.


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#5 lyall ONLINE  

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Posted June 17, 2016 - 04:25 PM

Also check valve adjustment. If it is too close, when the motor gets hot they may not be closing.

I would check the valves.

the valve seats and valve face wear causing the valve gap to be less as they get older

the less the valve gap the more you can have a back fire or hot exhaust


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#6 Eric OFFLINE  

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Posted June 17, 2016 - 10:23 PM

Condenser may be starting to go.
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#7 terrijanson OFFLINE  

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Posted June 20, 2016 - 11:16 AM

Thank you for all the replys!  Is it costly to have the valves worked on?  This is something that is out of my boyfriends skill level.  First we will replace the wire from the points to the coil and see it that helps...:)



#8 lrhredjb OFFLINE  

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Posted June 20, 2016 - 06:05 PM

To check the valves you have to remove the breather cover and check the clearance between the end of the valve stem and the lifter with a feeler gauge. Check the manual and it will show you how to do it. The manual can be downloaded from this site. You do not need to take the motor apart.


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#9 Eric OFFLINE  

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Posted June 20, 2016 - 08:51 PM

Juse a word of advice, have more faith in your boyfriend I bet he is capable of more than even he gives himself credit for. In fact I am willing to bet you can handle this one without him, just give it a go. Remember you can only be successful at something if you first are willing to try!
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#10 terrijanson OFFLINE  

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Posted June 22, 2016 - 10:35 AM

Okay  i  will  give  it  a  try!!






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