Filthy fuel injectors

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That’s pretty bad.

I’d look to replace personally .

 

I'm trying to remember how much the injector projects into the intake port. About the dirty amount? EGR would be mostly responsible for that?

I've been reading here it's best to use new O-rings (where they connect to the fuel rail), and REALLY take it easy when reassembling, lots of turning as you ease it all back together.

 

From what I've read: definitely get new O-rings.

$108 apiece for the injectors! At bottom of page:

Fuel System Components for 2014 Toyota Prius | McGeorge Toyota Parts

 

The attachment up the page documents how to test them, running them and checking the volume they pass through in a set time. You hook them up to 12 volt battery, and they stress: make/break connections away from the injector, at the battery.

Could be they're fine, and it's just crud on the outside from the EGR, but the inside passages are clean??

 

We've had good results several times sending injectors to a restoration service (in particular, Rich at cruzinperformance in Michigan, though there are other services that do the same thing). Rich will put them on a tester and generate a half page of test data showing how they perform before restoration, then make them all new-like again, and generate the half-page of 'after' test results, and send them all back to you with all new seals, filters, and O rings already lubed and ready to reinstall, and your page of before/after test results.

Last I checked, he would do that for about $20 per injector, 80-ish for the whole set. I thought it was a darned good deal. There could be a week or so of mailing and turnaround time, but if you're in a big engine project anyway, maybe that doesn't slow you down.

More recently, somebody posted links to online sellers with whole sets of 4 "refurbished" injectors for, like, 20 or 30 bucks. I suspect that's pretty stiff competition for somebody like Rich, who probably can't match that price with the service he provides.

On the other hand, I know more about the service he provides than I know about the provenance of the $20 "refurbished" sets on the web.

Hmmm....

 

They come back not-clogged.

 

If you follow the links in this post, you can see the three sets of before/after test results we got while the PriusChat informal injector restoring study was going on. You'll see that two of the sets (mine and C Clay's) were both nearly flawless on the 'before' test, so there wasn't much room for improvement. The middle set, astrolink's, were definitely causing running issues with his engine, and the 'before' test for those suckers showed exactly why. They came back just as good on the 'after' test as any of the others, and solved his problem.

I actually still have the third set from that "study" (the ones out of C Clay's car, back from Rich, restored) in a plastic bag here.

Edit: I misremembered: astrolink didn't reassemble his car with the restored injectors from Rich; he was sort of the start of the PriusChat "injector exchange" idea, to save on the turnaround time. He bought a new set to reassemble his car; I paid Rich's charge to restore his old ones, and Rich shipped them to me; then for the next person, I shipped the restored ones (no waiting for Rich), he again sent Rich his old ones and I ended up with them after restoration.

 

I don't think it would matter much, but still I would persevere: maybe try some mechanic's tweezers?



Also, try Oxi-Clean, strong/hot solution, let it soak for an hour with one end corked. it'll bubble/float the stuff out, as long as the passages are not totally clogged.