Exhaust Manifold Help : Lost on how to remove Fuel injectors, wiring, and fuel rail. - JeepForum.com
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Unread 08-09-2005, 05:39 PM   #1
Mr. Notorious
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Exhaust Manifold Help : Lost on how to remove Fuel injectors, wiring, and fuel rail.

SO, I'm trying to remove the exhaust manifold and I cannot figure anything out because the Haynes book completly sucks. So, to remove the intake, I have to take out the injectors? OR just the wiring harness that goes to the injectors. And whats the deal, when I disconnect the quick disconnect for the supply and return lines to the fuel rail I need to by an o-ring and spacer kit from the dealership?? And is this the same for each injector???? I have no idea how to disconnect the wires going to the injector and I really don't want to get in there and start trying to things because I really don't want to screw up a fuel injector. Please help me out here... I had no idea how difficult this would be...

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Unread 08-09-2005, 06:33 PM   #2
sentinal02
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Quote:
Originally Posted by Mr. Notorious
SO, I'm trying to remove the exhaust manifold and I cannot figure anything out because the Haynes book completly sucks. So, to remove the intake, I have to take out the injectors? OR just the wiring harness that goes to the injectors. And whats the deal, when I disconnect the quick disconnect for the supply and return lines to the fuel rail I need to by an o-ring and spacer kit from the dealership?? And is this the same for each injector???? I have no idea how to disconnect the wires going to the injector and I really don't want to get in there and start trying to things because I really don't want to screw up a fuel injector. Please help me out here... I had no idea how difficult this would be...
did you look in chapter 4 under fuel injector rail assembly? if you're just looking in the engine chapter under the intake manifold then I can see why it seems a bit vague. pretty detailed in my book in chapter 4.
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Unread 08-09-2005, 08:28 PM   #3
RCHavok797
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When I changed my manifold all I did was disconnect the fuel lines and just moved the fuel rail out of the way. I didn't need to replace the o-rings.
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Unread 08-09-2005, 10:40 PM   #4
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Originally Posted by RCHavok797
When I changed my manifold all I did was disconnect the fuel lines and just moved the fuel rail out of the way. I didn't need to replace the o-rings.

Which lines? Just the supply and return lines? Did you have to touch any of the injector stuff? Like unplug it atleast? And just unbolt the whole rail from the intake and let it hang-out there? Sorry for the questions, but I don't want to fiddle with that expensive electrical stuff.
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1992 4.0HO 5spd -- BDS 3.5" lift -- 33x11.5 M/T's -- Gibson Cat-Back -- 8.8 with 4.10's -GONE

1967 FJ, linked, 350 chevy, 35's, arbs, blah blah...
2002 TJ

"If you're not moving ahead, you're falling behind"
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Unread 08-09-2005, 11:09 PM   #5
tobias94yj
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I am trying to remember what I did when I installed my borla hdr....

I think I left everything mechanically connected and just let it hang. Also the easiest way to remove that exhaust manifold is through the bottom. I did not start messing with any of the intake and fuel injection until I tried putting the borla hdr in because it is alot longer than the factory exhaust manifold and I thought it would be easier to drop it in from the top.....I was wrong I still mananged to manuever it in through the bottom

I thought I was going to have to move all that stuff also but I did not need to I know I ended up disconnecting some wires but that was easy, I know I did not disconnect any supply and return lines.
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Unread 08-10-2005, 06:58 AM   #6
RCHavok797
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I remember just disconnecting the supply and return lines, the two lines towards the front of the Jeep, and then just unbolting the fuel rail from the intake manifold and moving it out of the way.
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Unread 08-10-2005, 10:08 AM   #7
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Alright, I'll try it out in a bit. My arm's sore from all the shots they had to give me today at the Dr.'s. Thanks
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1992 4.0HO 5spd -- BDS 3.5" lift -- 33x11.5 M/T's -- Gibson Cat-Back -- 8.8 with 4.10's -GONE

1967 FJ, linked, 350 chevy, 35's, arbs, blah blah...
2002 TJ

"If you're not moving ahead, you're falling behind"
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Unread 08-10-2005, 10:56 AM   #8
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Alright, took out the 4 bolts that holds the rail on. So I'm trying to pull it off and the injectors just won't pop out. Anyone have a trick to get the injectors to pop out? I used Pb blaster and I'm trying and trying and she won't break loose. Which angle do they come out?
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1992 4.0HO 5spd -- BDS 3.5" lift -- 33x11.5 M/T's -- Gibson Cat-Back -- 8.8 with 4.10's -GONE

1967 FJ, linked, 350 chevy, 35's, arbs, blah blah...
2002 TJ

"If you're not moving ahead, you're falling behind"
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Unread 08-10-2005, 12:19 PM   #9
Mr. Notorious
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Well, I figured out a quicker way. All I did was remove the 9 intake bolts and flip the whole manifold up and onto the valve cover. Basically the throttle body was facing the oil cap. Pretty simple now that I'm not using the book. Sometimes that book just makes everything harder. Here's a couple reference shots.








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1992 4.0HO 5spd -- BDS 3.5" lift -- 33x11.5 M/T's -- Gibson Cat-Back -- 8.8 with 4.10's -GONE

1967 FJ, linked, 350 chevy, 35's, arbs, blah blah...
2002 TJ

"If you're not moving ahead, you're falling behind"
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Unread 08-10-2005, 07:00 PM   #10
tobias94yj
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Quote:
Originally Posted by Mr. Notorious
Well, I figured out a quicker way. All I did was remove the 9 intake bolts and flip the whole manifold up and onto the valve cover. Basically the throttle body was facing the oil cap. Pretty simple now that I'm not using the book. Sometimes that book just makes everything harder. Here's a couple reference shot.

Sorry if I did not explain it well but that is what I was trying to say, you don't have to disconnect any fuel lines or pull any injectors you just move the whole intake manifold. I could not get mine to flip up on top of the valve cover though and the exhaust manifold will just come right from the bottom.
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