Pulled and cleaned fuel injectors, now I have a heavy fuel leak - please advise

What exactly do you expect anyone to tell you ???

Either: You didn't put it back together right OR something like a gasket or seal was
damaged in the process.

I don't know how that fits together but it often is possible to tighten things
TOO tight and actually cause a leak.

 

Yep, post 2.
OP, tell us what you found.

 

That's been a problem for others before. Inserting O-ringed things into things isn't exactly complicated but there's a touch to it that's essential. Toyota puts pictures in the repair manual but could stand to emphasize the importance even more.





As in that manual excerpt, what they specify for lubing the O-rings first is gasoline or maybe "spindle oil" (bit more obscure and hard to find).

If the O-ringed end of the injector doesn't get fully seated in the fuel rail and then you crank down the fuel rail bolts, it can end up kind of squashing the injector. Even if it doesn't look bad, it could possibly bind internally or just not work right. More headaches.

 

When you fit the injectors into the head and then put the rail on top of them and what have you You will know it feels correct when you can rotate the injector between the rail and the cylinder head where they're seated you should be able to rotate them around very smoothly it will feel like you're turning a damp knob on an old or older radio kind of smooth rubbery feeling If you get those o-rings cockeyed wampy jawed or anything like that this is exactly what you will have is leaks so now you need to undo the feel rail lift the mess up off of there and try it again It is remotely possible you damage and folded an o-ring doing this so look at them all carefully I use my magnifying glasses when I need to to make sure I haven't crimped or damaged any of the o-rings once you do this twice you'll immediately know what happened pretty much.

 

The injector o-rings top and bottom or $22 a pop maybe this is in a foreign country or something I don't think locally but anything is possible another injector $20 away or something about 50 bucks a pop possibly a tad less no not from Toyota.

 

Well, it probably ruined tonight, but I bet you'll figure it out next time you look at... In the meantime, maybe there's some parts you could replace with brand new? In times like these I start throwing money at whatever I can afford that's brand new repair job.

Maybe there's others parts you could replace with brand new? In times like these I'm willing to start throwing money at whatever I can afford that's brand new so everything gets a fresh start and whatever caused the problem, even if I never find out, ends up in the garbage can.

 

Through Amayama I'm seeing $1.98 (CDN) apiece, plus $14.37 for shipping. When you bump the quantity to 4, the shipping remains $14.37:

https://www.amayama.com/en/catalogs/toyota/prius/3-hatchback-right-xw30-2009-2830/engine-fuel-system-and-tools-1/fuel-injection-system-49

https://www.amayama.com/en/part/toyota/9030107037

If it's similar price for you, that'd work out to $4.18 USD apiece, shipping included. The math:



Maybe get 8, likely still the same shipping cost.

 

If the fuel rail was tightened down hard enough with an injector cockeyed, it might be possible the rail's a bit misshapen now.

 

Is it necessary to service the injectors if car working fine? I mean i have never pulled them out from any of my cars and they are driven a lot

 

I'd leave them be unless I had some concern with how the engine was running and wanted to know if they were the cause.

If I did have that concern and wanted to know, I'd have them tested and restored.

These were clearly not at fault in the car they came from:



And these clearly were:



Note that in the bad set, three were kind of mildly bad before restoration, but #2 was much worse. That kind of imbalance can make for very rough running.

 

Am I misreading this, or does it sound like you're putting them in the head first, and trying to attach the rail next?

If so, I think you'd make your life easier by following the repair-manual illustrations in #4, and twirling the injectors with their O rings into the fuel rail first, as those are the tougher connections to get right. Fitting the injectors down into the head next isn't as hard.

It's the connections to the fuel rail that have to withstand fuel-line pressure all the time without leaking.

Where they sit in the head, those connections just have to seal against the intake vacuum, which is less of a challenge.