EEVEE

So i just got some bosch ev6 24lb ((dunno what that means lol) 12 hole injectors because i think at 220k miles its time to upgrade the injectors and hope to fix the mpg issue that still plagues my jeep. is there anything i really need to heed before doing this job? i know you gotta pull a relay for the fuel pump and release the pressure in the fuel rail and reset the ecu but is there anything i need to take caution with? also while i have the injectors out and exhaust and intake manifold out to replace the gasket between what else should i focus on that could be replaced while i have all that out? my heat shield looks to still be in tact and also for the gasket should i use this copper paste stuff to ensure proper sealing? aaaannnnddddd also my jeeps a 99 lol https://www.ebay.com/itm/283202362490 these are the injectors i got and also a side note before its said i did replace the o2 sensors so theyre brand new as well. maybe a recommended brand for the intake/exhaust manifold?

Cummins93

I installed some 12hole inj on a 2000 a month ago. I didnt pull any relay, relieve rail pressure (until I pulled the first inj.) Or reset the ecu. Pull em swap them start it.

gat

Why do you have to remove the intake and exhaust manifold to access the fuel rail? I have a 1992, but I've seen more modern years at junk yards and don't remember seeing a vastly different engine configuration.
I just release the pressure at the fuel rail into a cloth, then undo the ingress and egress lines. Your would just be ingress. Let that leak into a rag since it would be under pressure.
Change the o-ring above and below the connectors for each plug. Now is a good time to do a complete "tune up". Replace the air filter, fuel filter (if pertains), spark plugs, distributor cap and rotor, and spark plugs wires.

EEVEE

I want to replace the gasket due to suspicion that it has an intake leak and might as well since im gonna go play around in that area. plus i think its a somewhat maintenance item at this point since a while ago all the frickin bolts holding the intake/exhaust on were loose as a **** and tightening to spec seemed to relieve alot of the rev hang i had but since i couldnt reach the bottom ones due to being lazy i left it like that. so since im in there im gonna replace it andddddd maybe trace a few vacuum lines and see if i got a vacuum leak too since i lose vacuum 20 mins after shutting the engine off and if i recall correctly it should maintain a vacuum for longer than that. ALSO!!!!! when i hooked a vacuum gauge to it the gauge itself read low (keep in mind this is from the 50s) and said its in retard timing sections i think...... ill see if i can pull numbers later. but tune up was done a month ago new cap, rotor, sparky bois and the such. and since then it hasnt backfired through the intake anymore lol.

EEVEE

gonna be one of these shipping methods..... shipped, nothing nothing nothing ITS HERE!!!!

lawsoncl

Just be forewarned that a lot of people have had problems with these fake chinese knock-offs. Just looking at the picture in the listing, they don't match each other for color and casting marks, much less match the genuine Bosch ones.

EEVEE

i hope this isnt the case and maybe blindly buying them turns out to be genuine lol

Cummins93

Mine are Ebay from a different seller but same price range. They appear to be working fine, fuel trims are fine.