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Old 07-25-2007, 10:59 AM
98Ranger2.5 98Ranger2.5 is offline
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Anyone changed all injectors on a 2.5L?

Hi can anyone tell me what other parts i would need when replacing the fuel injectors on my 98 ranger 2.5L. I know 4 injectors, I guess the fuel pressure regulator since it is out. what gaskets? ECT...
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Old 07-25-2007, 12:05 PM
87 XLT 87 XLT is offline
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What makes you think the injectors are shot?

I have 235k miles on my 87 2.9 & have'nt touched the injectors.

Sold my 95 Taurus with 150K miles & never had an injector problem on it either.
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Old 07-25-2007, 12:12 PM
98Ranger2.5 98Ranger2.5 is offline
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I have intermittant missfireing when i plug in the scanner it says (detected #2 cyl misfire) the whole engine shakes i loose power then i continue driving and it clears up5 minutes later it happens all over again. i replaced the plugs,wires,both coil packs and reseated and checked all connectors under the hood.
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Old 07-25-2007, 04:39 PM
87 XLT 87 XLT is offline
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In that case, maybe it is a bad injector.

I dont have a shop manual for a 98, but the only thing mentioned in the shop manual for my 87 2.3 is replacing the injector O rings if needed.

Some highlights on the 87

Open fuel tank cap & release fuel pressure at the schrader valve.

Remove 2 fuel supply manifold retaining bolts

Carefully disengage manifold & injectors from engine and remove manifold & injectors

Grasp injector & pull up while gently rocking injector from side to side.

Inspect injector O rings (2 per injector) replace as needed.

Instalation of new injectors:

Lubricate injector O-rings with light grade oil

Install injector into fuel supply manifold. Use a light twisting, pushing motion to install them.

Dont know if that will help on your 2.5, but thats how it's done on an 87 2.3 liter.

Good luck with it.
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Old 07-25-2007, 06:12 PM
98Ranger2.5 98Ranger2.5 is offline
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Thanks for the info but my truck is way different i think i have to take off the air chamber (tunnel) because the fuel rail is under that.
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Old 07-25-2007, 07:25 PM
87 XLT 87 XLT is offline
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Well that does'nt surprise me.

BTW, heres the pinpoint tests that I show for P-0302.

Check for intake vacuum leak.

Check compression

Ignition circuit malfunction

bad spark plug

injector circuit malfunction

Faulty injector

Hope this helps
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Old 07-27-2007, 06:21 AM
98Ranger2.5 98Ranger2.5 is offline
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Thanks i found the problem this morning. on the way to work today the problem happened again so i pulled over and started to pull each plug wire off and when i pulled off #2 cyl there was no change but i had a great spark. i shut off the truck checked the plugs on that cylender and they look like new (Because they are) i started it again the engine was still shacking i reached under and started unpluging the fuel injectors one at a time every one made the engine stumble even worse except #2 cyl. i shut off the motor and i checked across the 2 electrical pins on the #2 injector with my multi meter and had Zero Ohms, wide open. when i check the others i have 4.7 ohms. so i have to say that is it.
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Old 07-27-2007, 11:50 AM
87 XLT 87 XLT is offline
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Nice job with the troubleshooting & it looks like you're right, the miserable thing is going open.

Glad you found the problem & good luck with the swap.
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Old 07-27-2007, 12:57 PM
98Ranger2.5 98Ranger2.5 is offline
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Ok i finnished it, the truck runs great again. yup i had to remove the air chamber or tunnel or plenmium what ever it is called once that was done i removed the injector plugs and 2 bolts that hold down the fuel rail and out they came. all in all the whole job took about 1 hour the hardest part was finding an auto parts store that had them. i went to Pepboys they do not stock them, AID auto they do not stock them, Auto barn seme thing. struss stores no good. NAPA not in stock. Finally i looked on line at AutoZone and they tell you if they stock them and did but only 1 so i had to drive to 4 AutoZones to buy all 4 but i got them and job done.

THANKS 87 XLT for all your help.
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Old 07-27-2007, 01:41 PM
87 XLT 87 XLT is offline
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And thank you for the interesting blow by blow on how the swap is done. Looks like the hardest part is finding the injectors.

Glad you're up & running good again.
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Old 07-27-2007, 01:41 PM
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Go Back   Ford Truck Enthusiasts Forums > Performance, Engines & Troubleshooting > Other Ford Engines > 4 Cylinder Engines

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