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Irritated!!!!!!!!!!!!!!!

R

Rodimus_Prime

Well-Known Member
OMFG! Changing injectors in this car is a freaking nightmare. After getting the 10,000 bolts off and on, I have the new injectors in and the one in the back keeps leaking!!!!!!!!!!!! I have moved it all around 3-4 times and it just keeps leaking!

WTF is going on with this?
 
You nicked the o ring on it. You need to put the injectors in the intake FIRST then install the fuel rail. Make sure you load the o rings with Vaseline as well. Also make sure you are using NEW o rings. But sounds like you tore or nicked the o ring somewhere.
 
Rodimus_Prime said:
Changing injectors in this car is a freaking nightmare. After getting the 10,000 bolts off and on, I have the new injectors in and the one in the back keeps leaking!!!!!!!!!!!!
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If you think this is bad try changing injectors on a TPI car, personally I've found the 3.8 Turbo to be one of the most mechanic friendly and easiest engines to work on - injectors should be a snap to do. And they should be loaded onto the rail first (there are retaining clips to hold them in place) then installed into the intake with a good spray lubricant on new o-rings.
 
I talked to many engine rebuilders and guys who work on these cars all the time and they said 90% of the time if you load the injectors in the rail first and then try to wiggle them into the intake your chance of ripping an o ring is much greater. Everyone tells me to load the injectors in the intake first. I did the fuel rail first and sure as hell tore a o ring and had a leak!
 
All I can say is as a mechanic by trade I always load the injectors into the rail, on any car, scince that is the proper procedure and then install into the intake and have never had a problem. I've probrobly done this over 1000 times without issue, in fact 6 sets of injectors so far this week due to water in fuel at one of the precincts, and have never ripped an o-ring. I see it's not the only way but I was trying to explain the correct way to install injectors, but then what do I know :shrug:
 
And I too always loaded them in the rail first. The funny part is I've had mechanic's tell me the proper way to install injectors is install them in the intake first as well? But I've talked to everyone from Jack Cotton on down and they ALL told me never load the injectors in the rail first. They go in the intake first. Other then nicking an o ring they told me you can bend the fuel rail among other things as well. Personally I've done injectors on turbo Buick's 4 different times and when I loaded the rail first, I had a problem with turbo Buick's. I've also been working on cars for about 25 years so I dunno. Just posting what the pro's told me. :)
 
well the problem is that when i load them into the intake the rail is coming down at the wrong angle and jamming up the oring

I also managed to electricute myself yesterday as well, didnt blow any fuses that im aware of and im still alive
 
I've always liked rail first on my GNs but I'm no pro. Vaseline was always key though, did you lube the o-rings? After a few times you'll be doing injectors on that motor in 45 minutes max.
 
TTA850 said:
All I can say is as a mechanic by trade I always load the injectors into the rail, on any car, scince that is the proper procedure and then install into the intake and have never had a problem. I've probrobly done this over 1000 times without issue, in fact 6 sets of injectors so far this week due to water in fuel at one of the precincts, and have never ripped an o-ring. I see it's not the only way but I was trying to explain the correct way to install injectors, but then what do I know :shrug:
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+1 :thumbup:
 
Omfg I am so pissed so I fix the o ring that's leaking and then it shoots fuel out like a damn spring from the side that wasn't leaking before

What the hell
 
did you lube and use new o-rings all around? Got crap in your fuel rail/manifold that is preventing a good seal? Did you take all the lines off the fuel rail so it was completely disconnected or did you try and squeeze them in by just barely lifting the rail up? Something is off, shouldn't be that much trouble.
 
Also another common problem people bent the fuel rail putting it on or taking it off! Check that as well! Other then that I think Rob covered the rest!
 
Make sure that where the injectors sit in both intake and fuel rail is clean and no foreign stuff is in there.

I always loaded the fuel rail first then installed and never had a problem, key is to take your time and not force or push stuff in place until you are sure it's all lined up and they will go in there without jamming etc. And lubricate everything properly as already mentioned.
 
i dunno if its bent or not this time im taking the entire thing off replacing every single oring and lubing, if that doesnt work, im out of ideas
 
well crisis averted, I tried to cut some corners and it ended up backfiring on me, replaced all the rings lubed them all up with vasoline, first time no leaks

Turbo Tweak chip is in, floored it for the first time, must say it didnt throw me back like expected but still pretty cool 0.5 touch of knock for a brief moment once i get the boost guage and wideband in and possibly alky i should be able to dial it in further, dyno day coming soon!
 
Rodimus_Prime said:
well crisis averted, I tried to cut some corners and it ended up backfiring on me, replaced all the rings lubed them all up with vasoline, first time no leaks

Turbo Tweak chip is in, floored it for the first time, must say it didnt throw me back like expected but still pretty cool 0.5 touch of knock for a brief moment once i get the boost guage and wideband in and possibly alky i should be able to dial it in further, dyno day coming soon!
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Why would you cut corners on a fuel system that can leak in the engine bay???!!! :explosion::explosion::explosion::explosion::explosion:
 
A TTA needs extra special love and care when working on them! They are special! You have to be in a good mood, clear your mind, clear your wallet, have plenty of time to work on it, and never cut corners! :) Heck I give my self 3 hours just to change the oil in mine!
 
Well I'm used to driving around a 2900lb car that has 22psi, so my sensation of fast is different than some folks, not a big deal though, I didn't get it to race with

unsure about fuel pressure ill have a gauge on it soon though
 
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