Totally confused!!

[OR VietVet]

I believe there is a repair/replacement kit for the 96 and newer vortec injector engines-AC Delco 217-3029

 

[th3 shifty]

It’s best to convert to MPFI, it’s about $300 but well worth it

 

[OR VietVet]

https://www.partsgeek.com/ss/?i=1&ssq=217-3029

 

[Obie One]

Ok got a 99 tahoe,put a new sending unit in and about 3 weeks later starts running rough check engine light is,read coats check everything in coats running lean random misfire, ok I cange all the things that needed to be changed run Good for a day or two then same thing again, kept not thinking it was the new sending unit never thought about it until I got tired of chasing a ghost, and it was the new sending unit, so I replaced it and then it is running to rich !! Replaced o2 sensors fixed exhaust leaks and now have a hollow sounding knock! Put new cap and roter new plugs and wires and now it won't pull itself??? I give up!

Ok sorry after reading this I couldn't make changes so yes very confusing!! Ok sending unit or fuel pump in the gastank . Nevermind that.
Put my 99 tahoe on a diagnostic machine and everything seems to be right where it should be , fuel trim, tested sensors, timing, everything was within a proper range according to the mechanics opinion, but still running rich,very rich and a random misfire not a real high number of misfires but still misfiring. Still running rough, flashing check engine light, and po300 code it's a new distributor ,new cap and roter new ac Delco platinum plugs and wires. Checked the intake,the EGR . No vacuum leaks found? Hopefully you.can understand this a little better!?
I'm clearly not a mechanic, sorry and thanks !

 

[exp500]

As mentioned above, upgraded injectors usually needed after about 15ok miles. Use only Delco.dist caps or a missfire happens quick.

 

[wjburken]

it's a new distributor ,new cap and roter

If you replaced the entire distributor, I am assuming you checked and properly set your cam retard.