2002 Tahoe 5.3l flexfuel pintel caps on fuel injectors

[AKSully]

Had a rough idle bogging issue a few days ago. Bought used with 110,000 and currently have 174,000. Hadn't done plugs on it since we owned it so figured it would be a good time for plugs wires and coil packs. Replaced those and still was idling rough. Had it plugged into an autozone scanner and said there were misfires on cylinder 6. Order fuel injectors and while attempting to reinsert the fuel rail and injectors into the vehicle I notice one of plastic caps (pintel cap) on the bottom of the injector is gone (most likely into the hole). The cylinder where the injector is spraying seems to be fully open. I tried using a plastic utensil in the injector hole to feel around.
1. Would this tiny plastic piece do anything but be vaporized upon fire up?
2. Would there be a scenario where I could pull the spark plug and fish out said cap?
3. What would he the issue running that injector without it's cap

 

[PNWYukon]

Forum post

Quote:"I just rotated the cylinder to TDC and pulled the spark plug and got a fat straw and stuck it in my shop vac and taped up around it so all the suction was going through the straw and stuck it in the cylinder and moved it around a bunch and hoped it got it."

 

[OR VietVet]

Welcome to the forum from Oregon. You are going to have to follow what @PNWTahoe said or cross your fingers and hope you can dig out of there your way or hope it causes no problems. You said you ordered "injectors" meaning you replaced all of them? Noticed the cap gone on a new injector? Noticed the cap was gone on the old injector from cylinder #6? Please be more detailed on this.


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