How difficult is it to test and or replace the fuel injectors in a 95 LS? #4 spark plug gets spark, but when the wire is pulled off the plug, there is no difference in idle RPM, #4 chamber is dead. I suspect the injector is bad because of the above tests. Ihave the haynes/chiltons i don't remember, and it looks pretty straight forward, but i wanted some comment from you guys.

 

It's not too hard. You just have to unbolt the fuel rail and take a few other screws off. The hardest part is probably draining the fuel!

I estimate maybe 2-4 hours (very conservatively).

 

easy as ****.