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

rough runnin 6.2 NEED HELP

Old Jan 15, 2010 | 09:05 AM
  #1  
smoking62's Avatar
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Diesel Fan
Joined: Jan 2010
Posts: 34
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From: spokane,wa
Exclamation rough runnin 6.2 NEED HELP

hey guys im 18 and have alot of experiance with smalll engines. diesels are another story. i have a 6.2 and it leaked fuel through the valley... so i bought a 35 dollar pump off ebay it was an as is buy. well i slapped it together and it wouldnt fire. so i took the top cover off the pump and filled it with diesel, and it ran hard when i throttled up it rapped out quickly at half throttle but it idled. when i got the pump i turned the fuel screw up and i noticed that the arm that pivots when the throttle lever is rotated, it pushes a little rod in the pump. well the ajustment screw was all the way out. on my old pump it was in all the way? i took it on a half mile test drive and it died and woudnt start please help

 
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Old Jan 16, 2010 | 10:10 PM
  #2  
bigcountrysg's Avatar
Diesel Enthusiast
Joined: Jun 2007
Posts: 141
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From: Willis MI
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Your pump is most likely out of adjustment. Only a trained tech should adjust the pump. This is why I will not talk about how to adjust the pump.

Your lucky the engine did not run away on you.
 
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Old Jan 16, 2010 | 11:58 PM
  #3  
dealwithit's Avatar
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Joined: Dec 2009
Posts: 103
Likes: 2
From: coquitlam, bc, canad
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are you sure your lift pump is working properly?
 
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Old Jan 17, 2010 | 12:35 AM
  #4  
Woody35's Avatar
Diesel Bomber
Joined: May 2008
Posts: 2,856
Likes: 124
From: PA
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i would not trust a 35 dollar injection pump off ebay. go to a local diesel shop and get it looked at
 
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