After replaceing the P2 injectors i have been having the problem of getting the fuel rail to seat on the top of hte injectors again. Everything will go together as it should. I pressureize the system and all lookes good no leaks anywhere. Once its all back together, after a couple of days of driving, i smell fuel and there is a fuel leak from the rubber gasket/groumet where the injector meets the rail.

The first time this happened recently was about a week ago. I replaced all the rubber o rings and seals where all four injectors meet the rail since one was leaking from a cracked rubber seal. After putting it back together, all went well for a couple days till now. when i get a leak from the same locatioon on the front secondary injector.

When putting the fuel rail in, it seems that when you tighten the two bolts holding it down, that it does not put nearly enough pressuere on the injectors holding them in. Is there something i am missing here, is there a trick that someone knows to get them to seal up, or is it jsut that touchy to get them to seal up correctly against the rail? Thanks in advance guys.

 

Can't help you out sorry
But I'm interested as I've just replaced my P2 injectors with uncapped yellows.

I used some Vaseline on the injector orings to help seat the injector.

Haven't had a chance to start the car yet

 

i used new orings, vasoline on all of them, and took the rail and pushed down on it a few time to feel all the injectors seat before i bolted it down. I have had it off 3 time and 2 different sets of injectors in with no problems *knocks on wood*. Unless its something in the fuel rail itself out of wack being its in the same spot. I do have a extra here if you need it cheap.

 

I will take it aprat tonight and vasaline them. I do not think that the rail is the issue but i will look it over and make sure its all good. I will keep that other rail in mind though if i notice anything strange about my rail.

Did you guys vasaline just the little o ring at the top or the o ring and "Groumet" that also seats into the rail?

 

i used it on everything the little o ring and gromment on top and the rubber seat on the housing. you dont have to get crazy just a thin coat.

 

Yeah i have heard of using vasoline on them. I will give it a go this time. Just seems like there is not enough pressure on the rail holding it down on the injectors. We will see i suppose. Hopefully this is hte last time i need to do this lol

 

Check for a lost O-ring in the fuel rail.
Each injector has a top and bottom O-ring.

 

Both top and bottom o rings were replaced. However i guess i caould see how one could have come off inside the real and me not nitice, then the injectors get re installed with the new rings... i will have to look and see what i can find. Thanks for hte help guys. I will let you know what i find when i tear into it after work.

 

Check all your O-rings for flat spots(from being rolled) and for cracks/tears. They can be hard to spot unless you look closely and if you have a bad one takign it apart and putting it back together wont help

 

Went and re worked the injecctors tonight, the one that had the leak had a slice hanging off the o-ring. Not sure when that happend. Obviously on the install cuz it was a new o-ring. I replaced the o ring and reinstalled them all. Used vasoline. Went and drove the car for close to an hour after the install. I dont smell fuel from the injectors, but i noticed on the injector that was leaking, it is wet around where the groumet meets the rail. I am thinking its jsut the vasoline melting and running. I finagled my fingers down to it where i could touch the groumet, smelled my finger tip and it did not smell like gas. I will keep an eye on it and see what comes of it. Really hope its not gas.

 

yeah the vasoline will do that with the heat. mine still have a shine to them after a week and a tank of gas. You should be pretty good at pulling the UIM by now. i swapped the injectors complete in a hour and a half.

 

That makes me feel better for now at least. Its not as if the "shiny" part of the injector is gettign bigger, but its wet aroudn the groumet then run down the back of the injector to wher the plug is then stops at the plug. the rest of the injecter is still dusty and dry.

 

that maybe depending on how much you used. Its not a problem if you used more than need because it dissolves in the fuel. I never really watched it as it heated i just took a look when i filled the sohn res the other days

 

Funny you should mention time lol. i timed myself, it took me and hour and a half also. I was curious cuz i had gotten pretty quick at taking all the intake off and gettign to the injectors. I will have to time me down to the minute if there is a next time... hope not ..

 

lol mines a bit harder because i dont pull the 6 point gtspec brace. It sucks being good at something because stuff is messed up.