Chevy/GMC 6.2L and 6.5L Discussion of Chevy and GMC Trucks with 6.2L and 6.5L Diesel Engines

hard to start after 80 or 90 miles drive

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Old Jul 7, 2014 | 09:23 PM
  #11  
littletex1's Avatar
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Default hard to stary after driven awhile

No issues starting it cold. Forgot to mentioned that I changed the fuel pump relay as well.
So i'll look for that fuel valve tomorrow.
 
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Old Jul 7, 2014 | 10:05 PM
  #12  
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If it starts good cold but very hard hot there is a good chance the injection pump is worn out.

Next time it is hard to start hot pour water over the injection pump and then try-if starting improves by a lot the injection pump needs rebuilt/replaced.
 
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Old Jul 7, 2014 | 10:20 PM
  #13  
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Default hard to start when hot

Thanks racer. Where is the injection pump located?
Once again thanks.

Originally Posted by racer55
If it starts good cold but very hard hot there is a good chance the injection pump is worn out.

Next time it is hard to start hot pour water over the injection pump and then try-if starting improves by a lot the injection pump needs rebuilt/replaced.
 
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Old Jul 8, 2014 | 07:02 AM
  #14  
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The injection pump is at the frt of the engine in the center right behind the oil fill spout under the pipe that the air goes in the engine from the turbo.
 
Attached Thumbnails hard to start after 80 or 90 miles drive-ds4-ip.jpg  

Last edited by racer55; Jul 8, 2014 at 07:07 AM.
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Old Jul 11, 2014 | 05:20 PM
  #15  
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Default injection pump

Well it was hard to start today after I drove it 70 miles. Poured water over the injection pump and it started. !
Originally Posted by littletex1
Thanks racer. Where is the injection pump located?
Once again thanks.
 
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Old Jul 11, 2014 | 05:25 PM
  #16  
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Default IP

Alot of money for a rebuilt Injection pump+ labor!
Originally Posted by littletex1
Well it was hard to start today after I drove it 70 miles. Poured water over the injection pump and it started. !
 
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Old Jul 11, 2014 | 06:21 PM
  #17  
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Shop around for a rebuilt pump and then google the vendors you choose.

There are a lot of poor quality rebuilt's out there and the net gets all the bad reports.but few of the good ones so if you get a lot of threads to read it will probably mean stay away.
 
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