Fuel Injectors replacement issue???

idk, but there are a lot of counterfeit plugs being reported, i wonder if they've hit injectors too

 

Did you verify the part numbers on the injectors?

When installing the injectors, you want the room to be able to be twisting them lightly back and forth on axis while seating them into the head and the fuel rail. Without that, just tightening down the fuel rail bolts and hoping the O rings will slip in can leave you with misshapen injectors and a ruined day (as another PriusChat member experienced several years ago).

Your photo looks as if the connectors are so close against the rail as to leave you none of that wiggle room. I would be very cautious about that.

That other member with the deformed injectors and damaged O rings also ended up with a gasoline spray-fest in the engine compartment when the fuel pump power was turned on. I would be very cautious about that also. (When I had injectors out in my own car, I put them back in and simply jumped the fuel pump for an initial leak test, before even thinking about trying to start the car.)

 

That could be a good sign, or not. From a distance, it's hard to judge the different meanings of "on there good".

Beats me. Have you confirmed the part numbers on the injectors?

 

IIRC “spindle oil” or gasoline are recommended, in Repair Manual. Spindle oil is pretty esoteric stuff, and sells by the barrel? So gasoline? Think I’d be partial to dialectic grease too though.

 

Sorry, just being librarian.

Have you checked online Toyota parts retailers? McGeorge Toyota Parts is one.

 

Toyota’s parts catalog says the service part number for a fuel injector assembly, with the injector, O ring, and vibration insulator, is 23209-39196, but it doesn’t give a part number for the injector itself.

The catalog is meant only to identify parts to be ordered from a Toyota dealer, however, not to tell you whether a part in hand is the correct one. Indeed, Toyota parts are often marked only with production part numbers, such as the ones you mentioned, that aren’t listed in the catalog at all.

That said, if the part numbers of the new and old parts differ only in the last digit, this suggests only a minor design change rather than a new design for a completely different engine.

If the parts were sold under the DENSO brand, they may be used or counterfeit. As far as I can tell, DENSO sells fuel injectors for gasoline engines only to Toyota and other automakers, not directly to the aftermarket; at least, they aren’t listed on DENSO’s own Find My Part website or on the DENSOProducts.com website of Monarch Products, Inc., their full-line U.S. distributor.

 

I don’t think it’s normal. In the installation procedure from the Repair Manual (more info, or see pages 13–15 in the excerpt from an older edition that @Mendel Leisk kindly shared in post #8), notice that the fuel delivery pipe sub-assembly is installed in step 3, but the engine wire harness, including the four electrical connectors for the fuel injectors, isn’t reconnected until step 5.