I just had a rebuilt set of injectors installed and now, after the truck has been sitting a while, right when I start it, it stumbles for 1-2 seconds and then fires up. A few times I've had to turn it over twice before it catches. Never had that probelm before.

What is happening here? I'm taking it back to the shop tomorrow, but I'd like to have some idea before I go.

Thanks.

 

If someone told me that without knowing that the injectors were cleaned, I would say a bad (clogged) injector. I had to change mine on my Camry years ago and that was the symptom. When it cranked, it would stumble and skip, but after that it would clear up and the engine would run fine. Sounds like one bad injector.

 

Another idea is an injector is not seated properly and leaking. Do you smell fuel?

 

No fuel smell.

That is how I found out I needed new ones. I had the vent open, smelled fuel, and the mech showed me where one was leaking out onto the intake. One bad, replaced all 6 so I wouldn't have to do it again in x amount of time.

 

I hate to jump to conclusions, but it sounds like one injector is bad. The only other thing I can think of is a loose wire when the injectors were reconnected. Might want to check those if you can reach them.