any DIY injector cleaners out there that are truly worth it? i can only imagine that for a DIY process, this would mean a "pour in your tank before fill-up" type?

I see many shops that try and sell a injector cleaning process for over 100 dollars, they connect it to the fuel rail, it's a highly concentrated cleaner. Has anyone had this service done?
I used Chevron Techron a few times, did not notice anything different.....

Had this done at STS 2 years ago, they also are supposed to clean the intake. I also use Prestone (?) and some other cleaners every 4-5,000 miles.

Chevron Techron, Gumout Regane, BG44K, LubeControl FP60.

Check the fluids and lubricant section for more info.

I had it done about 50,000 miles ago I didn't see any real differance. it stank!!!! to high heaven though and smoked alot while they were doing it

There's a place you can send the injectors to to have them professionally cleaned and have them checked for performance but I lost the link I think it was around $80 for all 6. I wasn't willing to let my car sit around and wait for them to be shipped back and forth.

The cleaners you find in the store I have found to be worthless. They don't seem to make a difference at all whether its chevron techron or stp w/ jet fuel (I was thinking car would go as fast as an airplane they screwed me over ). However I found these types of pour in fuel injector cleaners help out big time on my old 626.


EDIT: I think this was the place everyone was talking about http://www.bgfindashop.com/locator/

The jet fuel from STP gives your engines more thrust when in 10,000 feet altitude. Try it!

i work at the airport...wonder if they are willing to lemme borrow some jet fuel

just as long as you give it back.



I use seafoam...didnt feel any difference when i put it in my gas tank...

Get a fuel injection service. They run a machine off the fuel rail run the car for about 45 and it has cleaning addictive which clean the combustion cambers and the fuel injectors. Best thing ive done.

My friend has an SVT Contour and said that he and many others just took off a vacuum line from the upper intake manifold and poured the fuel injector cleaner in there. It had mass amounts of smoke from the carbon, but he said it made a big difference. Can we do that with a Maxima?

WOW, thanks for all the replies! about 5 years ago i had knocking problems which i could get rid of by the process you describe, SMX95. But the mechanic said it rids the engine of the carbon build-up. does this seem like the same operation to you?

Yeah, you can do that with the seafoam and the brake booster line.

Your talking to one. I am an automotive tech. It will not clean valve stems. It will only clean:fuel rail, injectors and combustion cambers. Now to clean the air portion of the engine (that was all the fuel part of the engine) You can buy seafoam but what I use at work is GM top-end cleaner. Its better than seafoam. Look on your intake manifold, there is a thick hose that comes out and connects to the brake booster line. Take that line off and with the engine running slowly pour the top-end cleaner in there. The engine might shut off, stalling will occur clouds of white smoke will appear and a very bad carbon burn smell will come out of the tail pipe. It will take a few trip around the block to clear out the smoke. Shut off the car so that the cleaner does its stuff. turn it back on and rev it up a few times. I don't see any damages by doing this.

Thanks for all the help guys. It looks like I have a new weekend project.

i'm a little confused, 'cause you're giving me advice on a carbon clean out job. not what my problem is. my car running like JUNK. has to be a fuel delivery issue(my guess is on injectors). so i ask you again..........is the process you originally wrote about good for cleaning my injectors? YES or NO?

U need to do a search for SEAFOAM....some people here swear by it

this might help http://forums.maxima.org/showthread....hlight=seafoam

OK, brought my 95 max to a BG shop to have the injector machine hooked up. they couldn't do it 'cause it didn't have the fuel port they said it needed in order to run the machine. so they just poured BG44K in my tank. 85 miles later and still runs like crap. next step is to have their ultra pricey machine analyze all kinds of sensors and what not for $85.00. by the time i get the car back to the shop for this, car will have at least another 100 miles on it. still don't anticipate any improvement, though. BTW, i finally got around to replacing the KS. when i got old one out, looked like my motor really got hot when water pump failed months ago 'cause plastic melted down about 1.5 inches around most of the sensor's circumference!
will keep posted. thanks for info so far.

If your car really is running like junk (which is completely subjective) then it needs actual repairs not some bullsh!t fix-it-all fluid that you pour in.

yeah, i figure it probably does but when i learned of a injector cleaning machine after replacing out 2 injectors w/ OEMs, which made some improvement themselves, i thought i'd try this machine out on the remaining injectors. they needed the car for 2.5 hours for engine to cool. i went shopping. came back and was told could not be connected to fuel line and they poured the BG44K in my tank whilst i was out shopping.
that's why i'm doing the fancy diagnostic machine they have, 'cause i'm getting no codes from ECU. then, hopefully, i'll know what my next step(s) will be.

Lucas fuel system cleaner is good too.

Yeah. I say Chevron Techron and Seafoam and then see what happens. You can't go wrong because it's fast, easy, cheap, and entertaining. It will only help.

Find another mechanic, it's a can of cleaner and a pressure regulator. It ties into your fuel system on the supply hose which would be right after the fuel filter on our cars. You don't need a "port" to tie into a fuel system on any car.

3M and I think Champion makes the kits, here's how it works.
Disconnect the fuel pump (pull the fuse). Disconnect the fuel supply line at the fuel filter and connect it to the pressure regulator on the kit. Pinch the fuel return line (use vice grips) so nothing can return back to the tank. Set the kit's regulator to the correct pressure (maxima is ~35-40 PSI). Open the can of cleaner, start the car, let it idle and sit back while it cleans your fuel injectors and combustion chamber. It usually runs for about 30 minutes.
The first time you take off after you put the car back together, clouds of black soot will poor out of your exhaust. Once you have the kit, you can buy replacement can's of cleaner at most auto parts stores.

I work at a chevron and they have those cans of cleaners that hook up to some machine but ive never seen the machine... Does anyone know what it looks like?

my injectors were dirty i remember about 8 months ago.
It was soo bad that my car was shaking and it turned off at least once or twice a day when i came to a complete stop.

i had no money to replace injectors, so i thought i do something before paying a grip load of money.

bought STP Gas Treatment and STP Injector Cleaner.
1st time, no work
2nd time, it stopped for a day or so
3rd time, no more problems!

So ever since then, im a believer of that STP cleaner it worked for me!

i say give it a try, what you got to lose? a few bucks?

Did you try testing your coil packs? Those can go bad and you won't get a code.

Air cleaner? Spark plugs? Fuel filter? When was the last time you replaced those.

sea-foam has always done the trick for me, except when I drank a bunch.
Hooked on phonics is also something that has always worked for me.

Anyone ever tried this?

http://groups.msn.com/JEEPTECH101/je...70465378176231

just thought i'd give readers an update. that BG44K is some groovy stuff. it's been 7 days since the treatment. 80 miles@75MPH, another 35 miles@average speed of about 45MPH and ohhhh what an improvement. no exageration either!
last night i went and replaced my plugs, when i started her back up was missing a cylinder(#5). same one i had to replace a coil pack on. i thought not this again. tested harness wiring 1st. no problem, then saw that pin 2 on coil was bent down. yeah, easy fix!
i still want to pull intake and replace upper and lower o-rings on injectors. ones on front(lower) where in awful shape.
thanks everyone for all the feedback.

I got mine cleaned by the nissan dealer for like $140...it was worth it for me but mine were really clogged...0-60 in 10.5 seconds and car would bog down for like 2 seconds if accelerating from a complete stop.

OMG!! I just ran some chevron Techron thru my system this weekend!! What an improvement in gas mileage. I don't know why I waited so long to try it.

I just changed my motor oil for the first time in the 4 years I have owned my vehicle and I must say... OMG what an improvement. I can't believe I did not do this sooner!!