How do you guys CLEAN your DI fuel injectors in your engine?
how do you make sure that there are no build-ups/clogs?



Second question is....while the injectors/fuel rail are out of my engine...how do I go about cleaning them....and making sure they're in tip-top shape...and flowing at max capacity?

thanks!

 

FUEL INJECTOR CLEANER...? i dont think DI means u can't use that stuff...

 

I usually put some Seafoam in the tank before filling up to clean them out.

 

Seafoam is ok to be used in DI?
just want to make sure

 

so far so good, i haven't had any issues. but didn't notice any different

 

Yep, a can of Seafoam in the tank at fill-up.

If it's out of your car already, just run seafoam straight through the rail and injectors. You'll only need like 1/4 of the can if doing it that way. Cleans them right up.

I'd say a fuel treatment with seafoam once maybe twice a year should keep them pretty clean. As long as you're using a top-teir gasoline, they shouldn't be getting too much build-up over time.

 

thanks!

so the injectors/fuel rail that are already out..........I can just soak them with sea foam?

or basically run sea foam thru fuel rail....and it will just go thru each injectors?

or soaking is better?

 

What you're gonna want to do is put some seafoam in the rail (assuming the injectors are still attached) and then properly apply power to each injector to get it to fire and spray the seafoam through it.

Honestly, just adding seafoam to the gas tank at fill-up and driving around with it should be enough. I highly doubt your injectors are hindered by any deposits.

I wouldn't bother soaking them.

 

I would definitely try to avoid soaking the entire injector in anything. Soaking the tips to remove any deposites on the other hand probably wouldn't hurt anything, but like Gremlin said, it's probably not really needed.... unless they are seriously gummed up with carbon deposites.

 

thanks for the input guys. I appreciate it.

Other forums recommended use of Ethanol?

and GM cleenz?


Most guys recommend sea foam though.

 

You can soak the tips in any sort of solvent while you have them out, gasoline works very well actually. The very high pressure of the DI system isn't conducive to buildups forming anyway, the fact that there is just so much pressure going through there means that particles don't have time to stick to anything and will be swept away by the blast of fuel going over them constantly. 1500psi is dramatically more than 58 psi on port injection systems.

 

that's true! 1500-2000psi...is a lot of pressure for DI injectors!


But I wonder how these DI injectors fail though? not thru clogging?

 

Generally the plunger breaks or the solenoid dies electrically, when a DI injector goes bad.

 

are there any signs/symptoms of a dying injector?

Im just afraid that during WOT, if an injector suddenly dies....then you need a new piston/rod

 

Na. If you lose fuel all together, there is nothing to burn to cause detonation. If you had one injector that was spraying 50% then maybe, but the knock would be very obvious and the car would pull a ton of timing trying to protect itself.

Odds are it will just stop working, causing you to drop a cyl as far as power goes and it will misfire as it would only be running on 3, but no damage will result from no fuel at all. Same as if you had a coil go bad.