install Ford Injectors in your jeep. - JeepForum.com

 
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post #1 of 12 Old 03-02-2012, 05:27 PM Thread Starter
wvracer821
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Wj install Ford Injectors in your jeep.

i picked up a set of bosch single hole injectors from ebay. motorcraft part number CM4956 they are from a 2000 ford mustang with the 3.8L V6
these are not the 4 hole injector that came in the dodge neon but they still have a mist pattern rather than the stream from the factory injector.
here is my write up on the install.

remove air cleaner


remove cable linkage bracket from intake and disconnect from throttle body.
also remove the breather line that goes to the valve cover



heres a picture of the rail after i removed it



Dirty hole.....ill fix this



take one ford 302 pushrod

equip dremel tool with cutting wheel.

cut slot in the end of the pushrod

insert small piece of sand paper folded in half

drill with pushrod in the chuck


this is used as a simple hone to clean up the holes while not creating groves in them.

the best way to do this is to put a blowgun in one of the injector holes that you are not working in and blow air through the intake while you run the drill and clean up the holes this will create positive pressure in the intake to blow out any particles that might make their way into the holes

here is the hole cleaned up


comparison


comparison


the only flaw that i can see in this is that you cant use the factory clips that go over the injector to hold it to the fuel rail.

new injector o rings all lubed up

jeep rail full of mustang injectors

reassembly went very smooth and after some fuel rail priming the beast fired right up seems to be running smooth but i will have to report back on this after i drive it a bit. hope this helps anybody that needs it.


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post #2 of 12 Old 03-02-2012, 05:49 PM
chrism1367
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Just curious why would you want to do this? More power? Fuel economy?
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post #3 of 12 Old 03-02-2012, 06:35 PM
MEinSoCal
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post #4 of 12 Old 03-03-2012, 09:32 AM Thread Starter
wvracer821
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120$ shipped.
they are supposed to be a better design ive read both cases where nothing different happens and they think it is a waste and also some people have reported better response and better mpg. mine seems to be running smoother at idle.

DD: 2014 RAM 3500 Megacab Larmie 6.7L Cummins
Junk: 2000 WJ, 4.0L
Build Thread: http://www.jeepforum.com/forum/f197/...build-1436556/
http://www.pirate4x4.com/tech/
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post #5 of 12 Old 03-03-2012, 10:13 AM
FrankU
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By all mean's document and report back.

04 WJ 4.0, OME Kolak 3" lift, Addco's F&R ,18" JK Sahara's
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post #6 of 12 Old 03-03-2012, 07:17 PM
77nomad
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FWIW I have a Holley Stealth Ram on a SBC it uses FoMoCo injectors and a Dodge IAC it was a hard pill to swallow.
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post #7 of 12 Old 03-04-2012, 06:49 PM Thread Starter
wvracer821
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the injectors seem to be fine. jeep has much better throttle response and seems to be running smoother and more consistent. but this could be a result of just having new injectors rather than ford injectors. will report back in a couple days with any benefits in mileage

DD: 2014 RAM 3500 Megacab Larmie 6.7L Cummins
Junk: 2000 WJ, 4.0L
Build Thread: http://www.jeepforum.com/forum/f197/...build-1436556/
http://www.pirate4x4.com/tech/
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post #8 of 12 Old 03-10-2012, 06:10 PM
FrankU
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What's the verdict ?

04 WJ 4.0, OME Kolak 3" lift, Addco's F&R ,18" JK Sahara's
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post #9 of 12 Old 03-10-2012, 07:18 PM
86cj74.2L
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I don't know when it happened but most manufactures went to closed valve injection cycle instead of a open intake valve injection cycle.

In closed injection cycle most all the gas is vaporized before the valve opens up. That may be why some noticed a change and some didn't. I think in closed valve cycle it only matters on how fine the spray pattern is during warm up.
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post #10 of 12 Old 03-18-2012, 10:06 AM Thread Starter
wvracer821
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after having the injectors in for a while i have some improvement in economy. i drive in the same patterns every week and fill up at the same station all the time. my driving consists of everything from gravel roads to winding country road, city driving, and highway. the over head display has shown 12.6 average mpg for about 4 months now since the last time it got reset. it now reads 12.9 average mpg. driving pattern has not changed although i did fix an exhaust leak.
this improvement could be due to the injectors being NEW rather than being a different design but who knows?. i am happy with them and i feel that if you are in need of a new set then this is a good alternative to OEM.

DD: 2014 RAM 3500 Megacab Larmie 6.7L Cummins
Junk: 2000 WJ, 4.0L
Build Thread: http://www.jeepforum.com/forum/f197/...build-1436556/
http://www.pirate4x4.com/tech/
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post #11 of 12 Old 08-21-2015, 11:19 PM
Konoc
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I have heard something about 4nozzle injectors from a Taurus helping to quiet valvetrain noise and smooth out the idle. with fuel economy boosts also.

Very thankful for your write-up and results! Thank you!

I will be looking into this further and giving it a shot!

r.
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post #12 of 12 Old 08-22-2015, 01:17 AM
alfaitalia
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Quote:
Originally Posted by wvracer821 View Post
after having the injectors in for a while i have some improvement in economy. i drive in the same patterns every week and fill up at the same station all the time. my driving consists of everything from gravel roads to winding country road, city driving, and highway. the over head display has shown 12.6 average mpg for about 4 months now since the last time it got reset. it now reads 12.9 average mpg. driving pattern has not changed although i did fix an exhaust leak.
this improvement could be due to the injectors being NEW rather than being a different design but who knows?. i am happy with them and i feel that if you are in need of a new set then this is a good alternative to OEM.
The evic will not be showing an accurate figure as it's set to work with factory injectors. It does not "know" the flow rate of your new injectors. It works out mpg based on injector duration. If your new injectors inject more fuel in the same duration than your old ones your evic will show better mpg even though it might be worse. Tank top to tank top calculations by hand are the only way to know.

My CRD had a turning box that changed injector pressure and duration. The evic showed 5-6 mpg better.....reality was about 1.5 worse!

Sent from the Dark Side (of the Pond) using only the Force.

If you can't fix it with a hammer, you've got yourself an electrical problem!
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