Im replacing the fuel injector right now Help!! - Ranger-Forums - The Ultimate Ford Ranger Resource


4.0L OHV & SOHC V6 Tech General discussion of 4.0L OHV and SOHC V6 Ford Ranger engines.

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Old 11-09-2011
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Im replacing the fuel injector right now Help!!

AllData says that it takes only 1.4 hours. Its been three. Ok so far i have taken off the air intake.. Alldata says to take off the crank manifolds the removing the alternator and the a/c pump. what do i change next. do i need to take the rest of the air intake off? There must be a way to just take out the injector,
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Old 11-09-2011
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I am assuming you have a 94.

Once the upper is off you need an Etorx to remove the studs and pull the fuel rail. These 6 studs hold all the injectors. You only need to pull the alt and ac if the valve covers are coming off.
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Old 11-09-2011
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I used the inverted torx bolt and got them off after realizing the valve covers do not need to come off nor does the alt or ac pump. Thanks for your quick response. Bad news now it that cylinder number two injector is dumping fuel everywhere upon accessory ignition usage. I believe it to be a back ring seal on the top of the injector.
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Old 11-09-2011
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Those o rings get worn out dirty and leak all the time. Take tome to clean all your injectors and replace o rings to prevent future leaks
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Old 11-09-2011
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Quote:
Originally Posted by RangerDangerfx494 View Post
I used the inverted torx bolt and got them off after realizing the valve covers do not need to come off nor does the alt or ac pump. Thanks for your quick response. Bad news now it that cylinder number two injector is dumping fuel everywhere upon accessory ignition usage. I believe it to be a back ring seal on the top of the injector.
BTW i did not take off the valve cover.. ha ha just making sure.
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Old 11-09-2011
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clean the o rings with brake cleaner or similar.

On reinstall lube them with Vaseline, that way that don't bind or tear.
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Old 11-09-2011
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clean the o rings with brake cleaner or similar.

On reinstall lube them with Vaseline, that way that don't bind or tear.
I would buy new ones. Its been shown that reusing old o rings are more likely to leak or rip. plus u could buy all of them for like a buck lol.
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Old 11-09-2011
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I reused them on 2 OHV's with no leaks.

i just forgot to order them both times. I would still lube them with Vaseline.
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Old 11-10-2011
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Which injector shall i use

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Originally Posted by j99ranger4x4 View Post
I would buy new ones. Its been shown that reusing old o rings are more likely to leak or rip. plus u could buy all of them for like a buck lol.
When i was at the autoparts store (autozone) they had a bunch of fuel injectors for my truck but all at different fuel psi. Does it matter? In my thinking (Not too offten ha ha) having a high fuel pressure injector would do no good while still using the same fuel pump... is this true?
Also i bought one of the higher end ones for that dead cylinder for 70 then when the oring blew on the other one i went to napa and got one for 45 (standard injector for that year make and model) Surprise napa was actually cheaper.
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Old 11-10-2011
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The pressure rating may have to do with the spray pattern at different PSI.

Keep in mind these things are kinda universal.
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Old 11-10-2011
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For my next step i have to fix the temp and oil pressure gauge because as they sit now they are both reading off the chart; over heating and high pressure however the engine is operating normally. do you know where the sensors are for the temp i know there are two? Is there any tricks to the dashboard to change the gauge or do i have to buy a kit with all of the gauges? whats the best coarse of action
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