Removing fuel rail..
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Elder User
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From: In my house..
Removing fuel rail..
I suspect the 351 Windsor in my 92 E150 has a clogged injector because the readings on a vacuum gauge are rock steady and all the spark plugs are firing but its got a dead miss.
It's had it since i bought it but I didn't notice it until after i modified the very restrictive exhaust system.
Need to pull the fuel rail to get at the injectors so,,, can i remove the fuel rail and change an injector without removing the upper half of the intake manifold ?
I'm sure that if i removed the upper half it would make the job one thousand times easier but don't know if it's a required step.
It's had it since i bought it but I didn't notice it until after i modified the very restrictive exhaust system.
Need to pull the fuel rail to get at the injectors so,,, can i remove the fuel rail and change an injector without removing the upper half of the intake manifold ?
I'm sure that if i removed the upper half it would make the job one thousand times easier but don't know if it's a required step.
Elder User
Joined: Mar 2014
Posts: 906
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I suspect the 351 Windsor in my 92 E150 has a clogged injector because the readings on a vacuum gauge are rock steady and all the spark plugs are firing but its got a dead miss.
It's had it since i bought it but I didn't notice it until after i modified the very restrictive exhaust system.
Need to pull the fuel rail to get at the injectors so,,, can i remove the fuel rail and change an injector without removing the upper half of the intake manifold ?
I'm sure that if i removed the upper half it would make the job one thousand times easier but don't know if it's a required step.
It's had it since i bought it but I didn't notice it until after i modified the very restrictive exhaust system.
Need to pull the fuel rail to get at the injectors so,,, can i remove the fuel rail and change an injector without removing the upper half of the intake manifold ?
I'm sure that if i removed the upper half it would make the job one thousand times easier but don't know if it's a required step.
The hard part is the bolts under the upper, they are a bear to reach and remove. The upper removal IS also a pain but probably easier in the long run plus while you are in there, might as well pull all the injectors, clean the screens and test them.
Here's the bolts on my 302, your 351 will be similar.
jim
302 lower
Fleet Owner
Joined: Aug 2010
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From: Reynoldsburg, Ohio
And I thought my 5.4's #8 COP and plug were hard to access!? 
I'm all with Jim's advice to renew everything you can while the fuel rail is out---its only money and would save a lot of extra labor down the road.
I'm all with Jim's advice to renew everything you can while the fuel rail is out---its only money and would save a lot of extra labor down the road.
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Elder User
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From: In my house..
$440 for a set of rebuilt injectors is kinda pricey, I think i will be okay with replacing the one bad injector, if the others were going to fail they would of done it by now with 125,000 miles on the bean counter, if another injector fails down the road i will clean the van with gasoline and dry it with a match..
Laughing Gas
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What jimandnena wrote is spot on, it's better to remove the TB and the upper intake manifold to access the fuel rail/injectors.
Take a ride thru ebay, there are several "dealer's" on there that sell the complete set of injectors (8) that are cleaned/tested and flow rated for about $99. make sure your looking at the 'orange' injectors for that year/engine.
Like This.
Yea, I know, you can sit there and clean them, and then.......how do you flow test them in your kitchen??? I've bought several sets like that, and just swapped them out and done. The O-rings cost $10 alone.
Take a ride thru ebay, there are several "dealer's" on there that sell the complete set of injectors (8) that are cleaned/tested and flow rated for about $99. make sure your looking at the 'orange' injectors for that year/engine.
Like This.
Yea, I know, you can sit there and clean them, and then.......how do you flow test them in your kitchen??? I've bought several sets like that, and just swapped them out and done. The O-rings cost $10 alone.
Elder User
Joined: Mar 2014
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$440 for a set of rebuilt injectors is kinda pricey, I think i will be okay with replacing the one bad injector, if the others were going to fail they would of done it by now with 125,000 miles on the bean counter, if another injector fails down the road i will clean the van with gasoline and dry it with a match..
One of my sons has a backyard full of Mustangs and other Ford rolling stock. I can always wander over there and find bits. I got a fairly recent set of injectors, rigged a nine volt battery and a piece of fuel line hose and flushed each injector with carb cleaner and 25 PSI from my compressor. The spray pattern was good enough, in my year EFI, it is batch fire anyway really NOT critcal. Later years were SEFI, each injector firing sequentially with the spark, so injector performance was more critical.
PS, if you go the gas bath route, remember to strip the VIN number. haha
Best of luck, jim
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JW, I did a 4.6 mod motor in an Expedition, if you pull the connector above the COP/plug, it makes if much easier. Of course, I learned this 3 extentions and 2 wigglies too late!
jim
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Fleet Owner
Joined: Aug 2010
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From: Reynoldsburg, Ohio
$440 for a set of rebuilt injectors is kinda pricey, I think i will be okay with replacing the one bad injector, if the others were going to fail they would of done it by now with 125,000 miles on the bean counter, if another injector fails down the road i will clean the van with gasoline and dry it with a match..
I did a write-up on that #8 plug, thinking it might help someone brand new to working on the V8's in E-Series vans. Its almost comical how much easier this is after having done it once---too easy to forget the anxiety we had that first time.
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Elder User
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From: In my house..
I found the rebuilt injectors on ebay for $100 but have they are 24 lb/hr injectors and i thought the stock injectors flowed 21 lb/hr or is that for the 302 ?
What is the injector flow rate for the '92 351W ?
Never mind, found a nice chart listing all the colors and flow rates..
http://www.centralstreetscene.org/fo...p/t-27280.html
Once i am able to see the injectors i will know which ones to order..
What is the injector flow rate for the '92 351W ?
Never mind, found a nice chart listing all the colors and flow rates..
http://www.centralstreetscene.org/fo...p/t-27280.html
Once i am able to see the injectors i will know which ones to order..
Elder User
Joined: Mar 2014
Posts: 906
Likes: 1
I found the rebuilt injectors on ebay for $100 but have they are 24 lb/hr injectors and i thought the stock injectors flowed 21 lb/hr or is that for the 302 ?
What is the injector flow rate for the '92 351W ?
Never mind, found a nice chart listing all the colors and flow rates..
Ford Fuel Injectors by Color [Archive] - CentralStreetScene.Org
Once i am able to see the injectors i will know which ones to order..
What is the injector flow rate for the '92 351W ?
Never mind, found a nice chart listing all the colors and flow rates..
Ford Fuel Injectors by Color [Archive] - CentralStreetScene.Org
Once i am able to see the injectors i will know which ones to order..
My 302 used 19s shown in the photo. The old ones had a single pintle nozzle, the newer ones I salvaged from a 90's motor had 4 holes in the nozzle but they worked fine. Batch fire EFI systems are not as precise (and neither is their gas mileage). The O2 sensor is going to do fuel trim anyway in closed loop so disconnect the battery long enough to allow the ECU to relearn the new injector setup.
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Small Block V8 (221, 260, 289, 5.0/302, 5.8/351W)
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