Bought some new FelPro o-rings for my ongoing Alero project. The new rings
are obviously fatter than the originals, and I can't get the injectors down
in their holes with the fatter o-rings fitted. Double and triple checked
the auto sites and supposedly I have the correct set for my daughter's
machine. Was there a design change for this o-ring at some time or other?
Could this o-ring be the upper one for the fuel rail connection instead (I
have not disturbed the injector to rail o-rings and would rather not just to
keep from opening yet another can of worms)? If so what the heck are the
lower o-rings properly called?
I'd either get the correct ones from GM, or just re-use the old
ones. I re-use the old ones 90 percent of the time. Unless they
have a nick in them....they will be fine. Make sure you lube the
o-rings and the holes they go into.
Inspected and cleaned the original o-rings today. Put them back on the
injectors. Now the injectors very easily slide into their holes even
without lubrication. They are almost free floating. With the rail bolted
down the injectors move easily when I put my hand on the fuel rail and press
down. However, they were plenty tight when I took them out. A good deal of
force was required to get them to pop loose.
Those FelPro replacements just will not go down in the hole without mucho,
mucho force, and when they do finally go in most of them lose a chunk of the
o-ring material in the process.
What the heck am I up against here? What portion of the injector should be
visible when it's in the hole? Wonder if I could have sprung those two
cross braces on the fuel rail? This is getting demoralizing.
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