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How to Install Fuel Injectors


 
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Phixion
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Joined: 06 Nov 2006

PostPosted: Mon Nov 06, 2006 2:05 pm    Post subject: How to Install Fuel Injectors Reply with quote

I am hoping to conquer the task of installing 2 rebuilt fuel injectors on my 1998 TJ this weekend. Only I am finding out that there is not much literature on the how to side of things. If anyone is willing to give a step by step lesson on the subject, I would greatly appreciate it.
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Phixion
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Joined: 06 Nov 2006

PostPosted: Mon Nov 06, 2006 2:09 pm    Post subject: Reply with quote

I forgot to add that it is a 6 cyl 4.0
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Tardis
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Joined: 07 Aug 2004
Location: Ohio

PostPosted: Mon Nov 06, 2006 10:32 pm    Post subject: Reply with quote

It's easy...
1. Disconnect battery.
2. Mark the fuel lines, front line is fuel return, rear line is fuel supply.
3. Mark and remove the pressure regulator line, and injector wires 1-6.
4. Carefully bleed the pressure off the fuel rail with the Schrader valve.
5. Remove fuel lines. You'll need a line quick disconnect tool set for this.
6. Disconnect the throttle, cruise, and detent cable(auto trans) from the throttle plate.
7. Unbolt the throttle linkage bracket and move it aside if necessary.
8. Spray with penetrating oil and remove the nuts/bolts that hold the fuel rail to the intake. There are 4 studs w/nuts, and bolts, you'll see them.
9. Carefully pry the fuel rail up, and remove it.
10. Check the o-rings on the injectors you're going to reuse, replace if dry rotted or cracked. Nothing worse than leaky injectors.
11. Lube o-rings with a light coat of motor oil, trans fluid etc.
12. Re-assemble, turn key to the 'on' position a few times to prime the fuel rail.
13. You're done. Start it up, get a six-pack and celebrate.

You can buy the quick disconnect tools at your local parts store for cheap. Below are some examples...
Quick disconnect tools:
http://www.jcwhitney.com/autoparts/Product/s-10101/Pr-p_Product.CATENTRY_ID:2004238/showCustom-0/p-2004238/N-111+10202+200+600007857/c-10102/TID-0820

http://www.etoolcart.com/index.asp?PageAction=VIEWPROD&ProdID=2588
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98' TJ, 99' XJ
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Phixion
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Joined: 06 Nov 2006

PostPosted: Sat Nov 11, 2006 10:05 am    Post subject: Reply with quote

Thank you very much for your response i'll let you know how it goes
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