Nissan dealer (my) recommends fuel injection service every 20K. Does anyone know exactly what this involves, and whether it is possible to DIY?

 

making you pay for something you don't need. as long as you put in 91 octane and is clean don't worry about it

just throw in a bottle of injector cleaner aver few fill ups

 

sorry for thread jacking this but why can i not make a new thread. whenever i click "new thread" it goes to some BullSh*t page about me not being allowed to or the admin blocking me. Any help and sorry again buddy.

 

you are too inexperienced on the forum.

anyways i have 60k on my 05 maxima. should i buy a fuel injector fluid? anyone have experience with it?

 

Thats funny...

He has your post count doubled.


Anyways, it could'nt hurt.

 

I have seen the service where they are running a cleaning solvent through the injectors without the car running. Is that the Fuel Injection Service Nissan is talking about doing? I mean does it really do anything or is it all smoke & mirrors? I found these two articles that made me ponder this. Since my 6th Generation Maxima was previously owned by my dad he took it to the dealer for everything. While I am not about to do that I would like to keep on the service schedule that he was on. I found these two links that may help, one was "For" Injector Service Cleaning, the other was sort of "Against". You decide, but a simple Google Search on Fuel Injection Service should help you make up your mind. The one article had a good point about the bottle method. You are basically breaking down the build-up so that it is small enough to fit through the filters. Now you have it going in to the engine per say, will it burn it all up on ignition?

http://www.asashop.org/autoinc/june98/techtotech.htm

http://ezinearticles.com/?Car-Repair...-It?&id=300855

 

Great articles, uavscrappy--especially the first one. My plan: periodically check miles per gallon and stay alert to performance declines and engine knock. Think about changing fuel filter. Here in Chicago, I have used off-brand 87 octane for years with no problems. Have examined injectors from 92 Oldsmobile with at least 100K and never cleaned--they were dirty on the outside, but the nozzles looked fine. I think most gas has enough additives to avoid injection problems...

 

you can just diy on this one. Just buy "Tune up in a Bottle" from LUCAS. Put in gas tank about half full says do it with full tank but notice much better results with half. I also recommend buying seafoam cleaner for your intake and pullin the intake off at the throttle body and using it as instructed. Cleans the built up crap out really good. Trust me when I say they probably won't do anything but take your money and put a bottle of fuel injector cleaner in your gas tank for 20 dollars. Cost for TIAB and Seafoam total 10 dollars.

 

It's just gonna remove carbon deposits from the intake manifold and through the heads. You can do it yourself w/ intake cleaner (caned) from autozone but you'll need a tool that will suck the fluid from the can, and then attach it to the brake booster vacuum line. It'll almost always set off a trouble code, but you can just clear it from the DTC list and the car will be fine. However, if you're running premium fuel you more than likely don't need your intake serviced.

Oh, tune-up in a bottle is a waste of money. Premium feul will clean the intake just as well.

If you don't have access to the tool I mention for draining the can into your booster vac line, you can use a piece of vac hose and put a misting tip(that will fit in your booster line), and drop the other end into the cleaner. If you do it this way make sure to keep the engine at about 2grand otherwise it'll flood the engine. DO NOT try if you're not mechanically inclined, it will do damage to the car.