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Injection Pump

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Old Oct 10, 2006 | 10:09 AM
  #1  
F450 Aaron's Avatar
F450 Aaron
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From: Prunedale CA
Injection Pump

My 7.3 banks turbo in my truck does not smoke at all even under full load and with my foot to the floor. Does this mean that the pump was never turned up? How could I tell if my truck was running lean?

Aaron
 
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Old Oct 10, 2006 | 10:20 AM
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Spectramac
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Maybe they just went a little conservative on the fuel screw. Do you get a little grey (or darker) smoke if you snap the throttle from an idle? If so, it's probably set right, but that doesn't mean you couldn't tweak it up a little more.

What temps can you get on the pyro on a long pull?
 
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Old Oct 10, 2006 | 11:46 AM
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The most I have seen is 800 and thats up a long pull. No matter what under full load and full throttle no smoke at all.
 
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Old Oct 10, 2006 | 02:43 PM
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I'd say you could turn the fuel screw up a flat and see what that does.
 
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Old Oct 11, 2006 | 10:23 PM
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Is your thermocouple before or after the turbo?
If it is after 900 is about all you want to go, if it is before then 1150 is about max.
 
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Old Oct 11, 2006 | 10:56 PM
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It is before. I turned the screw up one flat and man did that make a huge difference in response. My EGT's are a little higher but thats fine. I'll be towing this weekend and I'll be sure to keep an eye on the EGT's.
 
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Old Oct 12, 2006 | 11:36 AM
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Alright! I need to turn mine up a little too. I backed it off a half a flat to try and get some more MPG, but all it did was slow me down.
 
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