Replacement CFI Injectors

[289stang]

Does anyone know where I can buy replacement CFI injectors? I have one that's going out.

The injectors on my 85 GT are the E4ZE-CA 52# ones and everyplace I've looked sells the smaller 46# injectors. It seems like no one have the 52# injectors any longer. The 46#'ers may be the only option at this point.

Well, there is one other option, drive it until the injector goes out completely, scrap the CFI and convert to a much more reliable carb!!

[JACook]

Engineering number E4ZE-9F593-CA crosses to Motorcraft CM4304, Standard TJ102, Napa 217214 (reman),
Napa 218214 (new), Bosch 0 280 150 403. Rock Auto has the Standard TJ102 listed for $26.79.

Or send the ones you have out to be cleaned and flow tested?

[289stang]

Hey Jeff, thanks for the info!! Ended up not having to replace the injectors.

Had a little extra time today and took the CFI off (much easier than anticipated). I took the injectors out and one of the injector's O-rings had disintegrated. I purchased 2new O-rings ($2.22 for the pair) plus a new CFI to manifold gasket set ($16.34). I put it all back together and it runs, idles and drives better than it has since I purchased the car in November. The car is not running rich anymore, doesn't want to stall when it come to a stop nor do I have a raw gas smell after shut down. It even starts easier!!

I was prepared to rip the whole thing out and now I can wait until summer before attempting the CFI to carb conversion! Not bad for $18.56 and 2 hours (half the time was driving to the parts store and back- twice).

[KevinK]

You can buy refurbished injectors now that you know the numbers. They are not cheap but you only need 2.

[fgross2006]

Hey Jeff, thanks for the info!! Ended up not having to replace the injectors.

Had a little extra time today and took the CFI off (much easier than anticipated). I took the injectors out and one of the injector's O-rings had disintegrated. I purchased 2new O-rings ($2.22 for the pair) plus a new CFI to manifold gasket set ($16.34). I put it all back together and it runs, idles and drives better than it has since I purchased the car in November. The car is not running rich anymore, doesn't want to stall when it come to a stop nor do I have a raw gas smell after shut down. It even starts easier!!

I was prepared to rip the whole thing out and now I can wait until summer before attempting the CFI to carb conversion! Not bad for $18.56 and 2 hours (half the time was driving to the parts store and back- twice).

Im gonna be replacing my intake gasket so I thought its a good time to pull the injectors and have them cleaned. theres a local guy that uses ultra sound to clean them.

Does anybody have a part number for the gasket set Ill need to put the CFI back together and the O rings ill need for the injectors?

[KevinK]

I bought the CFI gasket set at Napa p/n 2-1702a. It resembles a carb rebuild kit. No injectors included.

[fgross2006]

Does anyone know specifically what injector part numbers I would need for 84 LX 5.0 CFI?

I may want to replace them

[fgross2006]

Does anyone know specifically what injector part numbers I would need for 84 LX 5.0 CFI?

I may want to replace them

does this look like the correct one?

http://www.ebay.com/itm/Fuel-Injecti...7e0e23&vxp=mtr

Attachment 86621

[KevinK]

does this look like the correct one?

http://www.ebay.com/itm/Fuel-Injecti...7e0e23&vxp=mtr

Attachment 86621

That looks exactly like the Napa kit. The rivets are for the automatic choke plastic housing.

[fgross2006]

That looks exactly like the Napa kit. The rivets are for the automatic choke plastic housing.

great, I just ordered one from ebay.

Now all I need is to determine the exact part number for the injectors in my CFI.

Anyone?

[KevinK]

great, I just ordered one from ebay.

Now all I need is to determine the exact part number for the injectors in my CFI.

Anyone?

Do you have the calibration code? If so I can look it up.

[fgross2006]

Do you have the calibration code? If so I can look it up.

where would I find the calibration code?

[KevinK]

The calibration code is usually a white sticker on the valve cover.
x-xxx-Rxx

4-22P-R13 Example for CA and AOD
This will give the parts list for the CFI unit and related parts. There are 743 calibration codes.

BTW, there is a part number on the fuel injector as well.

[KevinK]

Looks something like this:
http://www.ebay.com/itm/191151147954...%3AMEBIDX%3AIT

[xctasy]

There are only a few replacement injectors, and they have a calibrated cubic centimeter per minute flow rate. Blue injectors are rated 477-483 cc/min at 33 psi, but there are three general ratings. First 5.0 CFi's were only 120 hp, 213 lb-ft engines, theGreen injector 3.8's even less. Ford rate them at lb/hr or grams per second, and have a standard test pressure. There isn't that many different ones, Ford kept the CFi 2-bbl engine ratings between 115 to 180 hp for 3.8, 4.2 and 5.0, and stepped the injectors up just by color.

A ford CFI unit from a 3.8-4.2-5.0-5.8 have Green 37, Blue 46, or Grey 52 lb/hour, low impedence (2 to 2-1/4 ohm) Bosch injectors under a Ford part number. Grey injectors are very high flow, they have no return line on early versions. The V8 ones ran at really low pressure, and were much bigger, about 483 cc/min from memory, when tested at about 39 psi or so.

See the chart for CFI Fords here http://www.turboford.org/faq/injectors.shtml

See http://vb.foureyedpride.com/showthre...uel-Injector-s

The injectors on the Regular 155HP are 46lb, and the 185HP HO LTD Police Interceptor has injectors rated at 52lb.

Standard Motorcraft CFi

P/N E3VE-EAA-3E27
Rectangular Mounting base, 5.150"x3.5"
Throttle Bore 1.558 Measured at the bottom of the bore.
Stepped Venturi Approx 1.1"
Injector Bosch style E06E-A1A

HO LTD P.I. Motorcraft CFi unit.

P/N E4ZE-BAA-4B44
Rectangular Mounting base, 5.150"x3.5"
Throttle Bore 1.558 Measured at the bottom of the bore.
Stepped larger above throttle bore to Approx 1.75"
Injector Bosch style E4ZE-CA



http://www.msextra.com/forums/viewto...p?f=71&t=13026

They are still around, but not all of them. Ford changed the pressure limits, but the injectors are common enough. I have that Bosch info for CFI's, studied them in depth. The HSC/HSO 2.3 and 2.5 didn't use the same injectors, there is no cross over. Ford US V6 and V8 CFi used the Bosch injector, not the VQ30ENissan/ Chrysler/GM items the liitle TBi Tempo/Taurus 'four' has.

Best option is always to reclean, and a volume check; most problems are simple in balances between left and right injectors, which then causes funny out-of range idle and off idle problems. The Ford CFI self compensates pretty good, but the system is dependent on a good standadrd of wide open throotle fuel flow, and a stock squit pattern, with proper fuel supply stops during pulsewidth modulation.

Fords suppliers really did a good number on sourcing Bosch style injectors with exceptional quality, but its nothing for one to flow +/-10% of the other, with more than that difference common in practice.

[fgross2006]

There are only a few replacement injectors, and they have a calibrated cubic centimeter per minute flow rate. Blue injectors are rated 477-483 cc/min at 33 psi, but there are three general ratings. First 5.0 CFi's were only 120 hp, 213 lb-ft engines, theGreen injector 3.8's even less. Ford rate them at lb/hr or grams per second, and have a standard test pressure. There isn't that many different ones, Ford kept the CFi 2-bbl engine ratings between 115 to 180 hp for 3.8, 4.2 and 5.0, and stepped the injectors up just by color.

A ford CFI unit from a 3.8-4.2-5.0-5.8 have Green 37, Blue 46, or Grey 52 lb/hour, low impedence (2 to 2-1/4 ohm) Bosch injectors under a Ford part number. Grey injectors are very high flow, they have no return line on early versions. The V8 ones ran at really low pressure, and were much bigger, about 483 cc/min from memory, when tested at about 39 psi or so.

See the chart for CFI Fords here http://www.turboford.org/faq/injectors.shtml

See http://vb.foureyedpride.com/showthre...uel-Injector-s

The injectors on the Regular 155HP are 46lb, and the 185HP HO LTD Police Interceptor has injectors rated at 52lb.

Standard Motorcraft CFi

P/N E3VE-EAA-3E27
Rectangular Mounting base, 5.150"x3.5"
Throttle Bore 1.558 Measured at the bottom of the bore.
Stepped Venturi Approx 1.1"
Injector Bosch style E06E-A1A

HO LTD P.I. Motorcraft CFi unit.

P/N E4ZE-BAA-4B44
Rectangular Mounting base, 5.150"x3.5"
Throttle Bore 1.558 Measured at the bottom of the bore.
Stepped larger above throttle bore to Approx 1.75"
Injector Bosch style E4ZE-CA



http://www.msextra.com/forums/viewto...p?f=71&t=13026

They are still around, but not all of them. Ford changed the pressure limits, but the injectors are common enough. I have that Bosch info for CFI's, studied them in depth. The HSC/HSO 2.3 and 2.5 didn't use the same injectors, there is no cross over. Ford US V6 and V8 CFi used the Bosch injector, not the VQ30ENissan/ Chrysler/GM items the liitle TBi Tempo/Taurus 'four' has.

Best option is always to reclean, and a volume check; most problems are simple in balances between left and right injectors, which then causes funny out-of range idle and off idle problems. The Ford CFI self compensates pretty good, but the system is dependent on a good standadrd of wide open throotle fuel flow, and a stock squit pattern, with proper fuel supply stops during pulsewidth modulation.

Fords suppliers really did a good number on sourcing Bosch style injectors with exceptional quality, but its nothing for one to flow +/-10% of the other, with more than that difference common in practice.

The chart on the link you provided from TurboFord.com says for an 84-85 HO CFI the injectors are Bosch Gray E4ZE-9F593-CA. I have an 84 LX 5.0 which is an HO CFI set up.

Can I be certain this is correct for my car?

I am going to have mine flow tested and cleaned but the turn around here's is 2-3 days. I was hoping to locate a brand new set in case things don't go as planned.

[fgross2006]

I got my gasket kit in the mail today. Made by Standard, I think the easiest way is to pull the injectors and take them to be cleaned. The car will be down at least 2 days but its the only sure way to keep it 100% original and avoid a headache from a part that almost matches but not quite.