Silver2000WS-6

iTrader: (1)

First off thanks for any replies and yes I did search.

Ok so I swaped out my intake manifold yesterday and ran into what I think may have been a problem when I went to install the injectors and rail. I left the injectors connected to the rails so I simply tried to press them back into my new intake. When I removed them off my old intake they were in tight, like really hard to get loose, but when I reinstalled them they did not seem as tight. They did however feel somewhat tight and the rail brakets lined up and bolted very nicely. So that leads me to my question: How do I know if they are in good? Do they snap in? Oh yeah I tried lubing them.
Thanks, Chase

trans2000am

iTrader: (49)

did you lobe the orings?they will be tight removing them the vary first time (mine were)id install one injector at a time and just use a little force to push them into the intake. just make sure that when you put the rails back on that the orings arent pinch'd or fuel will come out(i found out the hard way).

Old Geezer

iTrader: (3)

O'rings will "take a set", once they have been in use for some time.
Some are more affected than others, as the quality may be higher/lower.
I always change them prior to flow testing, as some/most injs are used, and the o'rings leak when I pressurize the bench.
Cheap insurance = new rings when changing injs out.
Fuel leaks while driving can be fatal.
Vac leaks can be fatal, and time consuming to find.
2 fires @ the Buick nats this yr... Both incidences = inj o'ring failures.

TransAm Mania

iTrader: (7)

Do the injectors have O Rings on the manifold side only or does the fuel rail side also have one?

Yahelou

iTrader: (23)

dont wanna hijack the thread, but how do u lobe the injectors??

MUSTANGBRKR02

iTrader: (91)

i'm pretty sure he meant lube not lobe. If they aren't seated it should be noticeable. Then pressurize the system, turn key to ON. check for leaks.

Old Geezer

iTrader: (3)

both ends. Some injs have the same size on each end, some do not.
Yrs ago, I used the lite brown rings, and had complaints of leaks. I switched to the Delphi OEM quality rings, [black] no more leaks.

Silver2000WS-6

iTrader: (1)

Thanks for the replies. Do they suppose to snap in or just go in?

Old Geezer

iTrader: (3)

o'rings properly lubed, they should fit snugly. I use dielectric grease, as I have it handy when cleaning/lubing electrical plugs on all connections.

MUSTANGBRKR02

iTrader: (91)

they just slide in.