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still knocking???

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Old Mar 19, 2015 | 11:54 AM
  #1  
keiseldiesel's Avatar
keiseldiesel
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still knocking???

Did injector o rings yesterday and tourqued them down and started it and let it get nice and warm. Then torqued again. Disconected each injector while running and it stumbled every time. Put it all back together and its knocking still. Im lost. Icp is 500 psi at idle and ipr cycle is 13%. Could low fuel pressure cause a long hot start and a loud cackle when warm? Also when the truck is warmed up the rpms vary +-100 at idle. This is what the truck sounds like. https://www.youtube.com/watch?v=Oj23Bpt0_S0
 
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Old Mar 19, 2015 | 12:23 PM
  #2  
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jhl3
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From: Asheville-where weird is
How long have you allowed it to run and or how long have you driven it? If you could, put your additional mods in your signature.

It is going to cackle and be a bit hard to start until all of the air is out of the heads in both the fuel and oil rail...

It can take up to 50 miles to get the air out of the oil rail in the head...

A regulated return would help clear the air out of the fuel rail quicker...
 
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Old Mar 19, 2015 | 12:27 PM
  #3  
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keiseldiesel
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Originally Posted by jhl3
How long have you allowed it to run and or how long have you driven it? If you could, put your additional mods in your signature.

It is going to cackle and be a bit hard to start until all of the air is out of the heads in both the fuel and oil rail...

It can take up to 50 miles to get the air out of the oil rail in the head...

A regulated return would help clear the air out of the fuel rail quicker...
I drove it about 50 miles yesterday. And today another 50. Truck just has a built tranny. Exhaust and intake.
 
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Old Mar 19, 2015 | 12:43 PM
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jhl3
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From: Asheville-where weird is
I would guess that it is Hutch mod time....that will remove the air from the fuel when done properly.
 
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