Fuel Injector Upgrade/Update?

[78Tbird1]

I ordered the rebuilt set from eBay, can confirm that the F0SE-A1A injectors are indeed 4-hole design. I've got the upper intake, fuel rail, and injectors out now, and I'm wondering, should I replace the other items under the upper intake now as well? Stuff like the fuel pressure regulator, coolant temperature sensor, and air intake temperature sensor? As far as I know they all are currently functioning, but they're also original, or at least appear to be.

Oh, and can confirm, had at least one bad injector, Blogs was still dripping fuel out after being shut off for 3+ hours. I also had absolutely no fuel pressure remaining in the system at that time either, barely lost any gas from the rails. Injectors 6 and 7 also look suspect., and all of them are showing their age.

[friskyfrankie]

If you can get OEM parts and can afford the expense, by all means, replace them all while you are in there.

[78Tbird1]

Definitely can't afford OEM, just the reputable aftermarket suppliers, but I take it that may not be suitable by the suggestion of OEM parts instead of quality replacements. I'd have to wait much longer to get them anyway, so may as well just keep what I've got. It's not like it is too hard to get the upper intake off again anyway.

[Brown_Muscle]

While you’re under there replace all the vacuum lines, cheap insurance

[friskyfrankie]

While you’re under there replace all the vacuum lines, cheap insurance

+1. Kinda figured that was a given but YES!

[78Tbird1]

Already replaced last year, had a cracked MAP line that was playing havoc with my driveability.

[gadget73]

the sensors aren't that unreliable, and if you aren't having problems I wouldn't be inclined to replace any of it. No need to introduce a bunch of variables.

besides, the air and water temp sensors can be changed with the upper in place if you have to. The FPR is generally fine or not, easy enough to check with a pressure gauge. The other fail symptom is gas in the vac line. if the pressure is right and its not leaking to the vac line, leave it.

[jaywish]

Agreed. I would not change out any of those other parts unless you had problems with them.

Really good that you swapped all the injectors. Now you have working units with new rubber. Still bear in mind the ones you put in are used so don't discount them as a source for any rich fuel condition or cylinder miss in the future. Hopefully the far distant future.