Old Posting on Injectors

[Robert Gallant]

Here is a copy of the injector summary by Dan.  I saved the file on 1/93, so its
not quite up to date.

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Since John asked, here is my current list of stock fuel injectors from Ford.
I only work with Ford stuff because I used to work there, and I can't keep up
with these details for every manufacturer (I wish I could).  Explanation and
further information follows the table.


Flow      PSI  Resist  Mfg.  Part     Color  Application

1.76 (14)  ??    2.25 Bosch  E3EE-BA  Blue   1983 1.6L
1.76 (14)  ??    2.35 ND     E4EE-AA  Blue   1984 1.6L
1.76 (14)  30   16.20 ND     E59E-AB  Gray   1985-6 2.3L Truck, 5.0L SEFI
1.76 (14)  33   14.50 Bosch  E67C-AB  Gray   1986 2.9L, 3.0L
1.76 (14)  33   14.50 Bosch  E67E-BB  Gray   1986 5.0L SEFI
2.45 (19)  40    2.25 Bosch  E6EE-AB  White  1985-6 1.9L
2.45 (19)  32   16.20 ND     E6TE-AB  Gold   1986 5.0L HO SEFI
2.45 (19)  33   16.20 DKK    E5TE-AB  Gold   1985-6 5.0L Truck
2.45 (19)  33   14.50 Bosch  E5TE-BB  Gold   1986 5.0L Truck
3.00 (23)  ??    2.40 Bosch  E4EX-AA  Black  1984-5 1.6L Turbo
3.86 (30)  35-45 2.40 Bosch  E3ZE-BA  Green  1983 2.3L Turbo
3.86 (30)  35-45 2.35 DKK    E4ZE-AA  Green  1984 2.3L Turbo
4.41 (35)  35-45 2.35 DKK    E5ZE-AB  Gold   1985-6 2.3L Turbo
4.54 (37)  40    2.25 Bosch  E3VE-A1A Green  1984-6 3.8L CFI
4.54 (37)  40    2.0  ND     E3VE-A2A Green  1984-6 3.8L CFI
5.81 (46)  33    2.40 Bosch  EOSE-A1A Blue   1980-3 5.0L CFI
5.81 (46)  33    2.00 ND     EOSE-A2A Blue   1983-4 5.0L CFI
5.81 (46)  33    2.25 Bosch  EOSE-A1A Blue   1984 5.0L CFI
6.60 (52)  32    2.25 Bosch  E4ZE-CA  Gray   1984-5 5.0L HO CFI
7.00 (56)  16    1.40 Bosch  E43E-AC  Blue   1985-6 2.3L HSC
8.00 (64)  16    1.40 Bosch  E53E-AB  Green  1985-6 2.3L HO HSC, 2.5L HSC

The flow rate is gm/sec and lb/hr in parenthesis.  The resistance is obvious.
The manufacturer is next, I think ND is Nippondeso (sp?), I can't place DKK.
The part number is constructed as follows.  All injectors carry a basic part
number 9F593, which is prefixed with a production release, and followed by
a revision/application code.  For example E3EE-BA from the table will be
E3EE-9F593-BA to your local dealer.  The tops of the injectors are color
coded, as a quick check to the technician to make sure an engine contains the
"same" injectors.  I included some sample applications which may help the
dealer if you are buying new, or yourself if scrounging in a junk yard.
I don't know at what pressure the flow rate was measured.  The value in the
table is listed as the operating pressure for the engine.  The turbo engines
use a regulator that increases pressure as the boost increases, hence the
multiple values in the table (I assmume the flow is at the lower pressure).
I don't know what was used for the density of the fuel.  I typically use
0.79 (rounded up to 0.8 for "quickie" calculations), and I have seen John
use 0.775 for "racing" fuel.  From this you could probably come close to
a ml/min value.

The last two big injectors on the list are classified as "low pressure"
in the manual.  Since these are on engines I have never seen, nor have a
manual for, I don't know what they look like.  These engines are used in
the Tempo, and I am guessing that they may use a single central injector.

I am expecting a 1993 electronics manual for my new Explorer I recently
purchased (I really need more garage now :-), which will contain a new
table.  When it arrives (week or so), I will update and re-post this table.

I have seen aftermarket 24, 30, and 40 lb/hr replacement injectors for the
5.0L HO SEFI that range in price from about $200 to $300 for a set of eight.
I assume that these would be 14-16 ohm since they are replacements for the
19 lb/hr stock injectors.  I have never bought new injectors from a dealer,
so I called to get a price.  I randomly picked E6TE-9f593-AB from the table
and called.  List price is $41.37, my cost $33.00 (plus tax).  Ouch...I
have paid between nothing and $10 at the local junkyard, but until I get the
PE injector tester built, I can't depend on these.

As long as we are on the electronic subject, I will mention that Ford has
used the same sensors on all models of engines, with a few exceptions.  The
knock sensors are different frequency depending upon the application.  If
anyone is interested, I can post that table as well.  I suspect (actually
hope) that the Mass Air Flow sensors are different across applications,
although I have not investigated this yet (mine works fine, so there is
no reason to go shopping).  The major problem is that the local junkyard
is becoming smarter about these electronic parts, and the price is increasing
to reflect this :-(.

I was going to complain that the hard part about using these injectors is
the low impedance.  I should mention that Ford uses saturated drivers,
not peak/hold (on the many applications I have tested).  The switching
transistors, heat sinks, and clamping diodes are physically very large,
especially on the low impedance injectors.  I have wasted the switching
transistors on the EEC-IV from a late model 5.0L HO trying to use the
low impedance injectors.  No big deal for me, I just replaced the parts,
but anyone trying this at home without the parts and ability to replace them
should be careful when changing injectors. Since John mentioned using
peak/hold, I will probably try it once I get the injectors characterized
using the PE tester.

A recent Ford-type magazine (I don't remember right
now) recommended not running over 85% duty cycle because it would damage
the injector.  I did not think so, but I will keep a few spares in my
pocket just in case.

Enjoy the info...Ask if you want more...

I promised an injector update when I got my new shop manuals.  Well, I got
them, and here is the info:

Flow   Part      Color          Application
14     F1ZE-B4C  Gray           1.9 - 3.8L
19     FOTE-D1A  Yellow/Orange  4.6L SOHC
24     F2LE-B2A  Lt. Blue       4.6L DOHC
25.3   F3DE-A2B  Blue/Green     3.0L Flex Fuel
30     F1SE-E1A  Red            3.8L SC

Flow is lb./hr. for gasoline (I don't know how the flex fuel was measured).
All have impedance of 11-18 Ohms.  The basic part number is 9F593, so a
complete part number would be F1ZE-9F593-B4C.

These are the newest injectors.  The 5.0L/5.8L/7.0L/7.5L V-8 use "older"
part number 19 and 24 lb./hr. injectors.

Now here is the interesting part.  These injectors are described as 
"Deposit Resistant, Top Feed Stage III".  The further description and
cut away diagrams show an injector with multiple plungers and the following
words (from memory):  Fuel metering controlled by adjustable top plunger,
lower pintle and orifice designed to control injection timing, spray pattern,
and minimze deposits.

I just love words like "adjustable".  Wouldn't it be cool if these were
all the same injector, adjusted differently.  I think I need to purchase
a few and take them apart, just to see how adjustable they really are.  Or
is this the way injectors are designed and I just was not aware of this
information?


	-- Dan
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Later


Rob
gallant at oasys.dt.navy.mil