Injectors..... need advice/build thread??? - Ford Powerstroke Diesel Forum
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post #1 of 75 Old 06-02-2013, 07:52 PM Thread Starter
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Injectors..... need advice/build thread???

I am in the process of doing the standard maintenance items on my 99. First, I should state that I have way more time than money, so it'll be awhile before I get completed. That said, I am doing this because my transmission case cracked which led me to pull the trans. This then led to the idea of replacing the up pipes of course, and has steadily snowballed from there..... So, I've decided on a laundry list of things to replace including the glow plugs, uvch, and valve cover gaskets. This finally brings me to my reason for the post..... Sorry I have around 168,000 miles on the motor with no issues as far as how it runs. That being said, should I consider replacing the injectors? By the way, I am pulling the motor out to fix the rear main seal and replace the oil pan. Any advice would be great, and I'll try to update with pics as I go.

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post #2 of 75 Old 06-02-2013, 09:02 PM
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They shouldn't need replacing
Are you looking to go bigger like stage 1 or 2 or something?
I sure as heck wouldn't replace them just for the fun of it unless you're just lookin to go faster.

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post #3 of 75 Old 06-02-2013, 09:07 PM Thread Starter
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Originally Posted by Joel View Post
They shouldn't need replacing
Are you looking to go bigger like stage 1 or 2 or something?
I sure as heck wouldn't replace them just for the fun of it unless you're just lookin to go faster.


No, not looking to go bigger. I wasn't sure if the next size injector would be be better to go with.

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post #4 of 75 Old 06-02-2013, 09:40 PM
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Is your oil pan that bad? Chances are your rear main seal is not bad. Its rare they leak.

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post #5 of 75 Old 06-03-2013, 01:10 AM
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I agree with hucorey above, I doubt your rear main seal is leaking. I would look for an oil leak on top of the motor, hpop related or ebpv etc. Any oil leak on top of the motor will drain out the back of the valley thru a hole and look just like a rear main seal leak. I also agree that your injectors should be fine, I just replaced my stock ones at 458,000, although I should have replaced them around 350k-400k as I really started looseing power around 400k.

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post #6 of 75 Old 06-03-2013, 02:25 AM Thread Starter
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Quote:
Originally Posted by hucorey View Post
Is your oil pan that bad? Chances are your rear main seal is not bad. Its rare they leak.

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I agree with hucorey above, I doubt your rear main seal is leaking. I would look for an oil leak on top of the motor, hpop related or ebpv etc. Any oil leak on top of the motor will drain out the back of the valley thru a hole and look just like a rear main seal leak. I also agree that your injectors should be fine, I just replaced my stock ones at 458,000, although I should have replaced them around 350k-400k as I really started looseing power around 400k.


There isn't any oil in the valley and there's none going down the back of the engine. If I get a chance this evening, I'll get a pic of the back of the motor and the oil pan. It's not a huge leak, but I figured I'd fix it now while it's easy to get to...

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post #7 of 75 Old 06-03-2013, 04:16 AM
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Mine also leaks at the back and its my oil pan at the very rear corner where the starter bolts up at. Its not a normal spot like a turbo pedestal O-ring, but not rare either.

Remove your flywheel inspection cover, start it up, then get under your truck to watch.

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post #8 of 75 Old 06-03-2013, 04:20 AM Thread Starter
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Well, the only problem is that the motor mounts are the only thing holding my engine in place right now...

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post #9 of 75 Old 06-03-2013, 11:43 AM
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Oh yeah. Lol. :p

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post #10 of 75 Old 06-03-2013, 11:59 AM
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Not a bad idea to replace the injector o rings while you are in there working on the glow plugs and harnesses. Cheap insurance.

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