Hello everyone, new to the forums. I brought a 93 s10 back from the dead a couple years ago when I bought it from a friend and dropped a rebuilt motor into it. A few months after I bought it, it had an issue with one of the fuel injectors that would intermittently stop spraying. It would buck, and kick, and stutter, finally getting back to normal. I took off the TBI, took it apart cleaned it, replaced all the gaskets, and rebuilt it. I replaced all the premolded vacuum lines with hose, new pcv valve, and new connectors for the IAC valve and MAP sensor because the old connectors were corroded. I put new injectors in, but it would stall shortly after starting, so I put the old injectors back in.

Now to today. It had been running okay for a few weeks, it would have a rough, low idle but I could drive it. Then a few days ago it was just cranking until I gave it gas, then it would start but immediately stall. I changed the MAP sensor and IAC valve and it ran great for two days (after a few minutes of high idle right after changing those parts). Now it is doing the hard start and stalling again.

I looked at the injectors as it was doing this, and they are definitely dripping. And they continue to drip for a couple seconds after it stalls. Is this an issue with the injectors? Or could it be something else, maybe with the throttle body? What could be causing the extended cranking?

I made a video to better illustrate the issue:
Thanks in advance for any help!

tl;dr
93 vortec v6 extended cranking (hard start) and stalls immediately after turning over. Fuel injectors are dripping. Replaced MAP sensor, IAC valve, connectors, pcv valve, vacuum hoses, and cleaned/rebuilt the TBI. Where do I look from here? New injectors?

 

It is your fuel pressure regulator. Would not hurt to xhange your tps sensor also.

 

What is your fuel pressure? should be about 16 PSI. If you can find an OBD I scan-tool, I'd run that and see if anything shows up. After that, I'd reset the entire system.

Off topic but your Schrader valve cap is missing on your A/C receiver-dyer Keeps the dust out, and very cheap too.

 

Ummm, 8 year old thread!!