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784 upgrade question

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Old May 12, 2011 | 04:49 PM
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shailey's Avatar
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Default 784 upgrade question

I just got some 784 injectors that I want to install soon. From reading the threads on here i have a general idea of how to do it. My only question is how would I go about depressurizing or bleeding the fuel line so fuel doesnt leak all over the place while im switching the injectors out
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Old May 12, 2011 | 05:15 PM
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on the fuel rail there will be a fitting with a cap on it for testing purpose put a small rag under it and push the tip in slowly
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Old May 12, 2011 | 09:57 PM
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Fuel will still leak out all over the place. Have several rags and a container to catch it. If you take the last injector in the rail out first and let it drain it will drain a good amount of it right there. I then took the front one out and the rest drained from there.
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Old May 16, 2011 | 12:56 PM
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anyone else have any ideas?/
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Old May 16, 2011 | 01:39 PM
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what's been said is the way to go. Use the test fitting to bleed some of the pressure. From there remove the injector on one end of the rail with something under the opening to catch the fuel then slowly remove the injector on the other end. Easiest way to do it and as long as your careful you won't spill anything.
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Old May 16, 2011 | 01:41 PM
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Originally Posted by no rdplz
what's been said is the way to go. Use the test fitting to bleed some of the pressure. From there remove the injector on one end of the rail with something under the opening to catch the fuel then slowly remove the injector on the other end. Easiest way to do it and as long as your careful you won't spill anything.

x2
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Old May 16, 2011 | 02:28 PM
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thanks...im waiting on a bored throttle body to be sent to me from xjfiles and im gonna install them both at the same time.
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Old May 16, 2011 | 03:16 PM
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just a thought ...you could start it up and then pull the fuel pump fuse and let the motor run out of gas and then releave the preasure
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Old May 17, 2011 | 06:02 PM
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lemme know how the injectors and throttle body help your performance/mpg. where did u get the injectors? ive been searching for forever and cant find any decently priced
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Old May 17, 2011 | 08:33 PM
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X2. when ever i do any intake work or anything that requires the the fuel rail to be removed, or fuel filter change, i just pull the fuel pump fuse and let it die out.

Originally Posted by mech1ohio
just a thought ...you could start it up and then pull the fuel pump fuse and let the motor run out of gas and then releave the preasure
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Old May 18, 2011 | 02:50 AM
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Originally Posted by just_jeepin
lemme know how the injectors and throttle body help your performance/mpg. where did u get the injectors? ive been searching for forever and cant find any decently priced
I got them from a guy on here 60 bucks for all 6 shipped. I'm not sure if that's a good price but I don't have any junk yards around me and I don't the tim to search. His name was hit stick or something I can find out for sure if ur interested
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Old May 18, 2011 | 07:19 AM
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Originally Posted by just_jeepin
lemme know how the injectors and throttle body help your performance/mpg. where did u get the injectors? ive been searching for forever and cant find any decently priced
I have a set of 784's if you want them. $60 shipped, ready to install. Cleaned, tested, new o-rings, new micron filters.
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Old May 18, 2011 | 08:54 AM
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i just ordered a set from Matt. btw thanks Matt,got your pm.
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Old May 18, 2011 | 11:05 AM
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Originally Posted by no rdplz
I have a set of 784's if you want them. $60 shipped, ready to install. Cleaned, tested, new o-rings, new micron filters.
someone pmed me already about a set for $60 shipped too but he said he put them on his '90 which makes me think their 703 and from my understanding only 784 will fit the 2000
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Old May 18, 2011 | 11:14 AM
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Originally Posted by just_jeepin
someone pmed me already about a set for $60 shipped too but he said he put them on his '90 which makes me think their 703 and from my understanding only 784 will fit the 2000
You are correct. The 703's will NOT work on a 2000. 703's use what's called an EV1 electrical connection, whereas the 784's use an EV6. The only way he could run 784's in his '90 would be by splicing the EV6 connections in as well.

OEJ - No problem. You should have no later than Friday.
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