Injector torque specs - PowerStrokeNation : Ford Powerstroke Diesel Forum
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post #1 of 15 (permalink) Old 02-19-2011, 02:00 PM Thread Starter
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Injector torque specs

What are the torque specs for the injectors? I want to do this right the first time so any pointers would be very helpful. Also what do you guys torque the oil rail down too?

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post #2 of 15 (permalink) Old 02-19-2011, 07:37 PM
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Re: Injector torque specs

For the injectors, in '03 the spec was 24 ft-lbs, later they increased it to 26 ft-lbs, and most builders recommend 28 ft-lbs to ensure the copper washer seals well. Make sure the bolt holes are clean and free of oil as this can affect the torque.

The rail bolts are 8 ft-lbs (96 in-lbs) for my '03, and your '04 should be the same. There is a sequence to tighten them in, here's the diagram from my service manual:



Tightening those oil rail bolts made me very nervous, being aluminum, be very sure of your torque wrench accuracy. Also, I just did 26 ft-lbs on the injector bolts, since that was the higher of the two factory specs and I didn't want to break anything. Good luck!

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post #3 of 15 (permalink) Old 02-19-2011, 08:47 PM Thread Starter
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Re: Injector torque specs

Thanks a million man! When you torque this oil rail how do you fit your torque wrench on the bottom oil rail bolts, as its a very tight fit.

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post #4 of 15 (permalink) Old 02-19-2011, 09:20 PM
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Re: Injector torque specs

Driver or passenger side? I did both, and if I recall I couldn't get the torque wrench in on the lower passenger side so I used a box end wrench and did them by hand, comparing with another bolt I had torqued to about 85% of spec.

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post #5 of 15 (permalink) Old 02-19-2011, 09:25 PM Thread Starter
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Re: Injector torque specs

Passenger side

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post #6 of 15 (permalink) Old 02-20-2011, 11:27 PM Thread Starter
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Re: Injector torque specs

Also I heard that Vaseline can be used for the injector o-rings and injector body? Should I clean out the Injector bore too?

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post #7 of 15 (permalink) Old 02-20-2011, 11:31 PM
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Re: Injector torque specs

I didn't bother cleaning out the injector bores, I was concerned about knocking pieces of crap loose in there that could interfere with a seal, so unless you have the cleaning brushes and do it really well I wouldn't do it. Most builders use clean engine oil or ATF to lube the new o-rings, I used clean motor oil.

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post #8 of 15 (permalink) Old 02-20-2011, 11:34 PM
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Re: Injector torque specs

wow... not cleaning injectors cups has to be one of the stupidest things I have ever heard....

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post #9 of 15 (permalink) Old 02-20-2011, 11:40 PM Thread Starter
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Re: Injector torque specs

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Originally Posted by CTC DEEZUL View Post
wow... not cleaning injectors cups has to be one of the stupidest things I have ever heard....
Do they make a special brush for that?

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post #10 of 15 (permalink) Old 02-20-2011, 11:52 PM
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Re: Injector torque specs

Not that I know of. I have smaller wire brushes that I put into a drill bit extention that goes into m 90 degree angle grinder. I put it odwn there, give it a few turns, spray some BG carbon cleana nd wipe it clean with rag and screwdriver. Than I either use my Blue-Point vacuum and suck the cyliner or blow it out with blowgun... Usually both. I then take snap-on camera down bores to make sure we all good... and pick up some STP Oil Treatment... Its thick as #### and it great for seals

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