I successfully cleaned some goo out of my fuel injectors yesterday. I’ve never done that before, but glad it worked. I bought the plastic tube things from Amazon. They allow you to plug the injector into one end, and push the other end onto a can of cleaner, then open the solenoid with 12v. The kit came with big alligator clips to hook to the battery, but no way to pulse the voltage. It’s supposedly not good to keep the power applied very long for fear of overheating the coils. So I wired up an old radio shack switch and tie-wrapped it to the tube thing. It cured a slight misfire that wasn’t showing any CEL codes.
It’s a litte tight getting the injectors out since they’re on the forward side of the engine. I tried to blow all the crap away from the injectors with compressed air before unplugging them. There was still quite a bit floating around after I got them out, so I taped a snorkel to my shop vac and tried to clean up a little more.
I had to pry the injectors down, and out of the fuel rail with a screwdriver. The o-rings fit pretty tightly. I popped on some generic “metric” size nitrile o-rings when I reinstalled, and smeared a little silicone grease to help them seat.
This topic was modified 5 years ago 3 times by cyclehead
I make Amateur Armrests - see the Commercial Forum. I also have SMT repair seals available.
Topic starter
Posted : August 25, 2019 7:57 am
4
This is pretty neat! Will probably be trying this soon. I suspect one of my yellows is leaking, since all my fuel trims are normal except I go to -20 when at warm idle...
Posted : August 25, 2019 9:02 pm
Is this what you got? https://www.amazon.com/beler-Universal-Injector-Cleaner-Cleaning/dp/B071RC9JMY
I dunno about generic O rings, the bottom seals on these injectors are pretty beefy. Probably best to get OEMs, last I checked aftermarket are barely cheaper and I have gotten cut ones before.
2000 Toyota MR2 Spyder, 2021 Lexus UX 250h F Sport
Posted : August 25, 2019 9:27 pm
If you have more pictures and details to add for noobs like me, we should sticky this.
Posted : August 26, 2019 12:03 pm
Is this what you got? https://www.amazon.com/beler-Universal-Injector-Cleaner-Cleaning/dp/B071RC9JMY
I dunno about generic O rings, the bottom seals on these injectors are pretty beefy. Probably best to get OEMs, last I checked aftermarket are barely cheaper and I have gotten cut ones before.
That’s the kit I bought. I’m sure the proper o-rings are cheap. I’m pretty much patching up this car to see if it will be a driver, or a scrapper. The upper seals are regular o-rings, the lower are some fat rubber things. To do it right, I’m sure you should replace both upper and lower while you’re in there. The hard part is keeping crap out of the holes while it’s open.
I ran cleaning solvent through the injectors “forward” about three times. Then “backwards” once or twice. I stuck an old o-ring over the tip to temporarily seal while I was backflushing. If there were some real particles in there it would probably make more sense to backflush them first to wash the stuff out through the big inlet hole. Then follow with washing them forward through the small injector squirted holes. I never noticed any poor spray pattern, or any improvement. But it sure ran better after flushing! The misfire went away about 10 seconds after starting the car.
This post was modified 5 years ago 2 times by cyclehead
I make Amateur Armrests - see the Commercial Forum. I also have SMT repair seals available.
Topic starter
Posted : August 26, 2019 12:50 pm
Cycle-cranium,
are the injectors from your V6 or 4 banger?
Posted : August 26, 2019 7:07 pm