Changing injectors - 2 questions ...

[ghlkal]

I'm changing out all the injectors in my '90. I ordered new ones from Jon at FIC. The new injectors came in two boxes of 8 marked primary and secondary. However, the injectors are all the same. Jon inidcated that this isn't a problem. I'd feel better if I can get some confirmation from you guys.

In the first image you can see the old and new. The old primaries are "tapered" while the old secondaries are "stepped." Both the new primary and secondary are stepped. The new injectors have the same numbers -- just the primary doesn't have the lower o-ring.


BTW, are the old injectors stock? Part numbers on the old injectors are "1240 5235357" (primary) and "2050 5235366" (secondary) [those don't seem like GM part numbers]

1) OK to use the new injectors - will everything fit OK?



In the second image you can see the orange silicon electrical connector gaskets for the fuel injectors. I had one missing on the PS and, of course, I lost one down in the valley on the DS. I can't find these anywhere.


The folks at FIC said to make a gasket from blue RTV by greasing the connector and flowing some in. After it dries, pull it out - clean - and use it. My Chevy dealer guy said to load it up with dielectric grease.

2) Which route would go - RTV or grease?

Thanks,

Gary