Question about injectors - Ford Powerstroke Diesel Forum
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post #1 of 10 Old 02-22-2011, 05:17 PM Thread Starter
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Question about injectors

Help me solve a question. Why does the oil have such an effect on injectors? Do the injectors actually reside in the oiled part of the engine? On our old trucks the oil had nothing to do with the injectors but now there are lots of additives etc. that are supposed to help the injectors from sticking.

I know on my truck the engine runs a little rough until the oil warms up which is supposedly related to the injectors sticking.

Thanks for your answers...
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post #2 of 10 Old 02-22-2011, 05:48 PM
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as far as I can tell, these 6.0 injectors use high pressure oil to drive a pistion thing which forces the diesel into the cylinder. It "amplifies" the fuel pressure by 7 times.
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post #3 of 10 Old 02-22-2011, 06:35 PM
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eeeny pretty much summed it up. Here is a link which elaborates:

dieselmann's PowerStroke Page - How the PowerStroke injection system works
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post #4 of 10 Old 02-22-2011, 07:21 PM Thread Starter
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Thanks for the link, that answered my question.
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post #5 of 10 Old 02-22-2011, 07:25 PM
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Thanks for asking the question...I never knew. No wonder they cost $3000 to replace!

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post #6 of 10 Old 02-22-2011, 07:28 PM
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that website is awesome! Only issue my truck has ever had is a couple failed injectors, but it has left me stranded...... i just got a FS2500 oil bypass filter setup, i hope that helps, next i will get an Airdog system witch i think provides additional filtration to the fuel... i hope that helps to preserve my injectors

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post #7 of 10 Old 02-22-2011, 08:28 PM
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Quote:
Originally Posted by Hivolts View Post
Thanks for asking the question...I never knew. No wonder they cost $3000 to replace!
You should see everything that goes into making a diesel injector! I did a 8month internship with Bosch, two of our product lines were injectors for duramax and cummins. Every injector is machined, then assembled with like 15 different parts if I remember right. And the assembly lines for these are manual not automated. Cost to make an injector was in the neighborhood of $150! I was like no wonder they cost an arm and a leg when they need replaced.

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post #8 of 10 Old 02-23-2011, 03:03 AM
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The Dmax and Cummins are fired electronically. Much different animals than our HEUI injectors. At WOT the HPOS is at about 4000psi. That is where ther shearing in the 6.0 happens. It just really beats the crap out of the oil in a hurry.
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post #9 of 10 Old 02-23-2011, 04:09 AM
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Originally Posted by PGreenSVT View Post
The Dmax and Cummins are fired electronically. Much different animals than our HEUI injectors. At WOT the HPOS is at about 4000psi. That is where ther shearing in the 6.0 happens. It just really beats the crap out of the oil in a hurry.
I know they are way different. I was just saying what it takes to manufacture those. I don't know who made the 6.0 injector but I would like to see their lines.

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post #10 of 10 Old 02-23-2011, 07:20 AM
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Quote:
Originally Posted by cyclonestroker View Post
I know they are way different. I was just saying what it takes to manufacture those. I don't know who made the 6.0 injector but I would like to see their lines.
I think they were made by Alliance.
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