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Old Feb 9, 2001 | 11:00 AM
  #1  
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Injectors

I'm considering having my fuel injector(s) professionally cleaned, seeing how the truck's a 1990. My question is, it's a 1990 F-150 300-6 4x4... how many injectors are there and where are they located. I've fooled around with almost everything except that part of the fuel system. I figure the less I play with it, the less chance something will break or go wrong.

Thanks
 
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Old Feb 10, 2001 | 02:06 AM
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Injectors

You have 6 injectors , one per cylinder . They are located in the lower intake manifold .
 
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Old Feb 10, 2001 | 09:23 PM
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That's what I suspected. They're yellow aren't they? How hard are they to get at?
 
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Old Feb 10, 2001 | 11:21 PM
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Yellow ? They should be gray . Youll have to remove the upper intake , fuel rail , electrical connections to the injectors & remove them from the lower intake . What exactly do you have planned ?
 
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Old Feb 11, 2001 | 04:43 PM
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I think i would find someone who has a motorvac, around my area they do it for about $70.00 Ive found a big difference in mine, since having the motorvac run on it .
Just my 2 cents.
Trouble
 
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Old Feb 12, 2001 | 11:38 AM
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Injectors

Gray?

The ones that came off my '91 were an off-white, almost a tan, 12#/hr. units!

What went back on are orange topped, 19#/hr. units off a 302/351 (along with an adjustable fuel pressure regulator and a pressure guage.)

Heckuva performance increase!

Eddie
 
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Old Feb 12, 2001 | 01:20 PM
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I planned to take them to a Diesel shop my work uses and have them cleaned. I just wasn't sure how involved it was. I figured it's better than these bottles you buy at the store. I'm still checking for that motorvac, but i haven't found a place yet.
 
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Old Feb 12, 2001 | 02:25 PM
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Eddie what did you have to do to install the 19#hr injectors on your truck? I am curious as I might install 19# injectors on my truck if they are not already on their. I believe the injectors on my truck are the same offwhite tan color. What parts do I need to do this conversion and was it easy to pull the injectors.

1994 F150 6er EFI.
 
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Old Feb 26, 2001 | 03:57 PM
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Old Mar 4, 2001 | 06:18 PM
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Injectors

Eddie, ditto to Paul's questions, and do you have any pictures of how you mounted the adjustable fuel pressure regulator? I'm definitely looking to do this, but considering this is my daily driver I can't afford any downtime due to trial and error.

TrailDawg
1993 F150 2WD
4.9L-Auto
Pro-Comp Stage-2 6" lift
Auburn Pro-Series Diff. w/4.56:1 gears
35x12.50x15 General Grabber MT's

 
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Old Mar 5, 2001 | 10:49 AM
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Traildawg I have a link here that discusses this project. It was given to me from StangerRanger.
http://pub41.ezboard.com/ffordsixcylinderperformanceforumfrm12.showMessage? topicID=20.topic

 
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