784 upgrade question
Thread Starter
Member
Joined: Mar 2011
Posts: 180
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From: Delaware
Year: 2000
Model: Cherokee
Engine: 4.0L i6
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
CF Veteran
Joined: Mar 2010
Posts: 47,923
Likes: 38
From: Broward County Fl.
Year: 1989 xj sport 2dr
Model: Cherokee
Engine: 12 hole bosch Injectors
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
Senior Member
Joined: Dec 2008
Posts: 584
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From: Gloucester Virginia
Year: 2001
Model: Cherokee
Engine: 4.0 I6
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.
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.
Seasoned Member
Joined: May 2010
Posts: 271
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From: Ypsilanti, MI
Year: 2001
Model: Cherokee
Engine: 4.0
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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Senior Member
Joined: Mar 2011
Posts: 586
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From: Houston, TX
Year: 2000
Model: Cherokee
Engine: 4.0L
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
CF Veteran
Joined: Dec 2010
Posts: 1,700
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From: S.Jersey
Year: 1999
Model: Cherokee
Engine: 4.0
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.
Thread Starter
Member
Joined: Mar 2011
Posts: 180
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From: Delaware
Year: 2000
Model: Cherokee
Engine: 4.0L i6
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.
Senior Member
Joined: Mar 2011
Posts: 586
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From: Houston, TX
Year: 2000
Model: Cherokee
Engine: 4.0L
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
OEJ - No problem. You should have no later than Friday.


