injectors=PITA

[Florida240sx]

After 7 cuts and 45 minues of cursing I finially got my injectors out.Now trying to reinstall some tomei 555cc.Can't do it.....Reason why my old motor spun a rod bearing.Tore an injector oring. Had the injector and put the cap on and gently tightened down each screw. One oring was crushed and the other got tore.I tried the method of wd-40 and twisting back and forth, but to no avail. Someone please slap me in the face and tell me what to do.

[deviousKA]

You should not use WD40 or any other penetrant on orings, depending on their material they can swell (not good).

Use some oring lube (I use parker) or some motor oil.

[Jookmasta]

so the 550cc injector is stuck in the rail? or are u trying to get it into the rail?

[S14tat]

what anthony told me to do was to just torque doen each screw with only 2lb ft. so the cap is no where near bottomed out, and the injector should stay sealed like that. in fact anthony doesn't even need to use any type of lube on the o rings with that method.

when you put it in though just start to car to make sure theres no fuel coming out the rail, and double check for a the first few days to see if it comes loose.

[Florida240sx]

injectors are out of the rail. I keep getting different ways of how to install.So someone tell me how to do it correctly. injectors out of rail: how to properly install. Last time i tightened down the caps on them abotu 2-4 turns between each screw until it was flush.Result was #1 &#3 crushed #2 &#4 were fine.

[chmercer]

dont put the injectors in by tightening the caps, this almost always results in ripped o rings. do it like this -

put the o rings on the injectorsput a little bit of vasolene on the edges of the o ringssupport the fuel rail with some wood blocks so you can push down on the injectors without the rail moving aroundpush the injectors straight down into the fuel rail, you can spin them if you need tothey will pop in, and sit flush with the rail surface, maybe slightly sunken inif the injectors are sticking out of the fuel rail more than about 1mm, you need to keep pushing. you will feel it pop into place.when you screw the caps back on, they should be completly flush with the fuel rail, if there is a gap between the cap and the rail, then the injector isnt all the way in.

[Jookmasta]

vaseline on the o rings....................then push em in by hand with all ur unholy strength............then tighten down the metal things evenly and u should b golden.....

[Florida240sx]

Someone on here told me not to use vaseline because it's petroleum....

[SHIFTrl240]

i used vaseline

.... for my injectors of course

[Florida240sx]

i used vaseline

.... for my injectors of course

But that's not the reason of why you bought it.....

[Jookmasta]

i used vaseline also...................vaseline, not valvoline. lol. but for real, i used vaseline on the o rings and havent had any issues for the 15,000 miles or so ive gone now.....

[chmercer]

Someone on here told me not to use vaseline because it's petroleum....

the reason you use vasolene is BECAUSE its petrolium. gas is petrolium too, so its all good.

[fabio420]

I had the same issue. I used silicon spray and poshed the injectors in with ease. then put the caps on. When I tightened with the cap, I ripped the bottom orings both times.

[nissanfanatic]

I use engine oil. I fill the oil container cap up and allow all the rings to soak in there and pick them out one by one as I need them.

Put the two o rings on one injector, put it in the rail, push down slightly, put the cap on, and tighten it down. Just use two fingers(oil-less) on the stem of the screwdriver. Tighen them down until they are finger tight. That has worked for me. I haven't replaced an O ring in a long time since using that method.

And buy new O rings..... Buy them every time you have the injectors out. Have a pack on backup...

On a side note, I'd think with Vaseline, it would slide in...

[Florida240sx]

While we are on topic.What is the easiest way to get them out??I've destroyed 2 sets of stockers. Only 1 of 8 survived undamaged.

[Jookmasta]

yes this is true, unlike in real life it is so much easier to get em in than to take em out. so far curse words and oven mittens or work gloves seem to be the most successful things. i tried vice grips and had good luck with that too but as u can guess, the injectors (at least the plastic circle at the top of em) didnt appreciate it.

[Florida240sx]

What do the oil chnage places have?They service injectors for like $45. Granted it's probably a crap job, but they do remove them and put them back in. What is their technique? Special tool? Know there has go to be something.......

[fabio420]

pretty easy to take them out actually. Just need a good size flathead screwdriver. to take the injectors out, stick a flathead under them where the angle of 45 degrees meets the rail. Turn the screw driver, and the injectors will pop out. Do it carefully not to crack them. remeber to relieve the fuel pressure.

[C-Kwik]

I concur with the vasoline. While these o-rings are designed to swell with pretroleum(gas), vasoline will take a bit to be absorbed. The swelling helps seal it. Just put enough to lubricate the outer surface of the o-ring so you can slide the injectors in. Seat them by hand before istalling the cap. The vasoline will dissolve in the gas when you run the engine.

[chmercer]

to remove injectors, what i do is lightly hammer a jewelers flathead screwdriver in between the edge of the injector and the fuel rail, and pop them out. goes very fast

[brunswick240]

Vasoline all over the orings and a wooden handle on a hammer or something works real nice to get the injs in. To get em out someone told me to loosen the caps 3/4s the way out, crank the engine and the injs will just pop right out. Dunno bout that one though, havent tried it, i just used wire strippers that had prog sorta things on the end and put those in the little holes and pulled and twisted them out... kinda ruined em though...

[KATwo40]

I always use wheel bearing grease on the O-rings. Works great.

[blckkat]

okay well now that I have read this and relized I installed my injectors completely wrong (used the caps to press them in, no lubricant, just some gasoline) how will I know if an o-ring is bad or torn? I haven't drivin the car yet just started it up a for a few minutes. didn't see any gas coming out of the rail, am I okay or are there other signs?

[S14tat]

you should be fine. if you ripped your o-ring it would run rich and you should see black smoke come out your tail pipe when you rev at nuetral.

but what size are they and are they tuned? if everything is tuned accordingly then just go by that way of checking. if its a bad leak it wouldn't even idle right. then you gotta unplug each injector to see if the car stays the same or get worse. hte one that says the same is the one that needs to be changed.

[Florida240sx]

I had gas pourign out of my exhaust, and had below 8 a/f ratio. Thought ti was beause injectors were more thna twice stock (555) so went for a 5mile cruise and killed my bearings. Live and learn......

[S13 240SX]

noob questoins on injectors cuz i'm having problems tooo... just got new 0-rings though... okay but what is the point of lubing them up with gas or oil or whatever, what does that do? make them slide back into the fuel rail easier????

[S13 240SX]

okay well i lube up my 0 rongs anyways with oil... checked for leaks... and i'm still leaking out fuel like maad crazy... it comes from injector 2.. its always injector 2!... i took it out and the new 0-ring was crushed. why would that be?

[Florida240sx]

If it's crushed then you aren't applying equal pressure.Your pushign more towards one side of the injector than directly in.I grabbed my exhaust mani with my left hand. Leaning over the engine from intake side.And would push down with the palm of my hand.Had a paper towel folded up under my hand also. They went in pretty easy.Still haven't checked them though.

[S13 240SX]

not sure if that makes sense to me, sorry... i'm just really tooo mad and confussed about this gay crap... i must of went and wasted soo much money on fuel injecter seals..

my one buddy said that the second injector that always leaks on me is probably just screwed up, but I don't know how that can be because I don't see anything wrong with it.

[ceniack]

put some o-ring lube (we use a silicone baised lubricant called parker super-o-lube here at deatschwerks) or you can use clean motor oil. press the injectors into the rail with your hands untill you hear/feel them kinda pop in place.

spin the injectors around in the fuel rail a couple times to get a proper seat. put the metal caps back on and check for leaks.

you might check the rail to see if there is an old o-ring stuck in there, or some kind of jagged metal piece keeping it from seating properly.

also, click link in my banner we sell o-rings for about half of what you get them for at the dealer in case you keep having problems.