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Cub Cadet 1512 Causing Problems! !


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#1 chuckerfarm OFFLINE  

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Posted December 11, 2013 - 11:26 AM

Hi I have a cc 1512 diesel with warm starting issues. Its driving me nuts. Ive put in new gear reduction starter , glow plugs and battery. Cold starts great or if you let it sit 10 minutes it will fire back up. Ill go mow yard or push driveway and turn it off. Wont restart for nothing. It just turns over like normal but black smokes puffs out exhaust. Im stumped! Please help:)

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#2 JDBrian OFFLINE  

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Posted December 11, 2013 - 12:30 PM

I don't have much experience with diesel trouble shooting but black smoke sounds like too much fuel or maybe no ignition of the correct amount of fuel due to lack of compression.



#3 chuckerfarm OFFLINE  

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Posted December 11, 2013 - 12:40 PM

Yea I dont see how it could lose compression as it uses no oil and after it sits 10 minutes its back to normal?

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#4 Alc OFFLINE  

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Posted December 11, 2013 - 01:08 PM

How about if the valves are a little too tight and when it's hot it looses a little compression ?

 

On the DT466E in our Internationals  they would run good most of the day and coming back in they would have a slight miss  , valves a little tight  , but they didn't have a starting problem but then they are 6 cyls so not all the valve where tight .


Edited by Alc, December 11, 2013 - 01:12 PM.


#5 JD DANNELS OFFLINE  

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Posted December 11, 2013 - 01:30 PM

Has this just started when it got cold?  My ford starts good when the temps are above 50, but when it gets colder than that it cools off fast.

I'm not familiar with your Cadet, but on my Ford I have to use the glowplugs before starting by turning the ignition to the left and letting them warm up before cranking. Or it will puff out black and start hard. With plugs hot it is almost instant.  That is so long as I remeber to pull back the throttle before cranking. :wallbanging: 


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#6 Alc OFFLINE  

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Posted December 11, 2013 - 01:42 PM

Good point to check if it uses some type of glow plug controller ,  we  had an old Chevy 6.2  that  had   warm  starting problems , I  put a new controller  on it and a few weeks  later it was   doing  it again , found out  they had old batteries  and  after  a weekend the batteries were too weak to start so they  used the BOOST on the charger , guessing   too high of a voltage and cooked the controller  , because a new set  of batteries and another  controller it was  fine



#7 chuckerfarm OFFLINE  

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Posted December 11, 2013 - 01:55 PM

It shouldnt need the glow plugs after its been run for two hours? It cold starts perfect. Its just when the engine gets hot, it wont start right up

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#8 JD DANNELS OFFLINE  

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Posted December 11, 2013 - 02:32 PM

I don't know. I know when I was back filling the Septic Tank a couple weeks ago and it was 15 degrees out I shut down for 15 minutes and had to use the plugs when I restarted?



#9 olcowhand ONLINE  

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Posted December 11, 2013 - 02:47 PM

I lean towards tight valve clearances.  Same happens with gasoline engines when valves are too tight.


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#10 chuckerfarm OFFLINE  

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Posted December 11, 2013 - 04:08 PM

So I guess I should try to adjust them. I have the manual

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#11 superaben OFFLINE  

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Posted December 11, 2013 - 06:28 PM

I lean towards tight valve clearances.  Same happens with gasoline engines when valves are too tight.

 

I agree with Daniel.

 

Another thing is a sticking throttle connections.  Two much throttle while cranking will cause it not to start.  Maybe something is sticking?

 

Ben W.






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