I replaced my injectors. My truck had mostly sat for 7 years before I bought it, and the injectors ran really rough. So I got re-manufactured injectors, took a deep breath, and started disassembling the intake in order to get to the fuel rail. I pulled the old injectors, put in new ones, and once I got everything back together, it ran much better.

Except there was this gas smell. Eventually I figured out that I'd pinched an O-ring on the #3 injector, and it was dripping gas, which accounted for the smell and the lousy gas mileage. I pulled everything back apart, replaced that O-ring, and put it back together. And now the #3 injector doesn't leak.

The #2 injector is leaking instead. This is starting to be annoying.

Some days I think the spare engine from the parts truck, with the carb, might just be simpler.

 

Eh. You just have to be careful installing those. I put a dab of oil on it and as you push it in slowly! Rotate it at a slight angle looking for bulging of the o ring. Once these injectors are in correctly and with the fuel rail bolted back down, you should be able to smoothly rotate the injectors back and forth in their positions.

 

Roger that. This time, that's the case. I just had it apart again and replaced the #2 O-ring this afternoon.

 

You didn't re-use the old O-rings did you? That's a big no-no. Yeah you have to insert the injector just right or they will leak.

 

Nope. New O-rings. I bought multiple sets of spares. Interestingly, the different sets are different sizes, which means one set is for the wrong injectors. But I'm using good ones that fit, and the reconditioned injectors came with fresh ones too, so I still have an allowance for screwing up.

Giving yourself an allowance for multiple screw-ups may be the most important take home lesson here.