1st Generation Dodge Cummins 89-93 Discussion of 12 Valve 5.9 Liter Dodge Cummins Diesels with Rotary Injection Pumps

Cool Down?

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  #21  
Old 12-29-2009, 10:00 PM
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o man ur fine.
 
  #22  
Old 12-29-2009, 10:55 PM
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i normally let my truck run about a min till i shut her down empty and normal driving, towing ar beating her i let her run a good five minets or so.
 
  #23  
Old 12-29-2009, 11:36 PM
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yea thats what i usually do thanks for the help all
 
  #24  
Old 01-01-2010, 10:33 PM
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had no idea. should i let it idle for a while before i take off too?
 
  #25  
Old 01-01-2010, 10:47 PM
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we are talking about letting it cool down just before shut down, but yes if its colder than 45* let it idle for 5 minutes or so, if its below freezing let it idle for up to 10 minutes.
 
  #26  
Old 01-02-2010, 10:21 AM
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since the shaft is "floating" on hot oil i imagine that even at idle it takes a long time to come down.I know my hy35 spins forever without oil pressure at shutdown( sometimes a full minute). the exhaust pulses at idle probably just push it right along at its "full load" speed.
 
  #27  
Old 01-02-2010, 11:11 AM
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Perhaps it is your pump settings that won't let you run low enough EGT's at idle. Mine idles at 300* Maybe it's your fuel pin? Or star wheel settings? I have my star wheel tweaked for less smoke because I was trying to get rid of the haze at idle.

On another note, if you read your instructions on the turbo you bought from Jacob, you only have to let the EGT's get below 410* before shutting it down. I still try to get mine to the 325-350 range though.
 
  #28  
Old 01-02-2010, 11:47 AM
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Originally Posted by The_Head
Perhaps it is your pump settings that won't let you run low enough EGT's at idle. Mine idles at 300* Maybe it's your fuel pin? Or star wheel settings? I have my star wheel tweaked for less smoke because I was trying to get rid of the haze at idle.

On another note, if you read your instructions on the turbo you bought from Jacob, you only have to let the EGT's get below 410* before shutting it down. I still try to get mine to the 325-350 range though.
Yea mine hazes at idle so i could modify my pump, and i try to get my new turbo down to 350 but sometimes it takes to long or im in a hurry, so i have to shut down at 400.
 
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