Hey guys,
Just this past year I baught another maxima - '98 to be exact. Love the car , got a great deal on it, however I've noticed that I am only getting about 260 miles up to the last quarter of the tank. I had gone in for a tune up - and I was told by the mechanic at Midas that my car doesn't need it yet, as the previous owner changed the filter, and had put in NGK spark plugs. I drive mostly on small routes, going about 60-80, but have a lot of stop and go traffic (lights, traffic). My question here is, would adding Fuel Injector Cleaner before filling up make a difference in my MPG/miles per tank?
and if so, are you supposed to add it in before every tank?

*I have also gotten the throttle body cleaned*

Thanks in advance...

 

Okay, the Fuel Injector Cleaner is going to be a bad idea. First off, the 4th gen maxima as well as many other Nissan's have a cheapo plastic piece somewhere along the fuel lines. This plastic piece is usually durable; but chemicals found in most Fuel Injector Cleaners actually deteriorate this part.

The end result? Fuel will leak from this part after you have used the Cleaner too many times (Varies with how diluted each treatment is).

I actually got this information from my brother in law who is a Nissan Mechanic. Apparently 2001+ nissans do not have to worry about this problem.

Best advice. There's actually a different way to clean out your injectors and that's with an "Intake System" cleaner. Instead of running through the fuel lines; this cleaner actually runs through one of the vacuum hoses (Reply if you want to know which hose) and through the injectors. Sure you get white smoke out of your exhaust for a couple miles, but that's just the chemicals doing its job.

 

Did you write 260 to the quarter tank? That means when you have a quarter tank left you have driven 260 miles.

I think that is great. There doesnt seem to be anything wrong.

In mixed driving in Savannah Georgia, I get 300 per tank. You get 260 per 3/4 tank which should leave about 60-80 miles left in the tank.

good luck on your new car

 

Drive the tank near empty, and test your theory again. The guages aren't perfectly smooth.

 

thanks for the replys, bump...can anyone else help me out?

Thanks`

 

I average about 350 per tank usually when doing highway driving (sav to atl).

seafoam or inector cleaner thru the brake booster would be a good method for cleanning then out.


or others have taken out the injectors and taken then to get cleanned, sounds time consuming but most likely worth it.

 

Sounds like it still gets good gas mileage for the most part, especially if some parts of your drive are stop and go. If you really are trying to find something wrong, maybe you can test your knock sensor or run the ecu diagnostic to see if you get any codes.

 

Hey woudl it be bad to put the cleaner into the gas tank during filling?

 

Eh I would stay away from fuel injector cleaner. I believe it was what caused my fuel injectors to go crazy, which did some damage ($2,600 to be exact), then again, some people have used it and their maximas are fine. Just putting in my .02.

 

Just wanted to point out it is not possible to put something in the vacuum system and and have it go through a fuel injector. The "Intake System" cleaner winds up in the intake system following the same path air will take into the cylinder.

 

Guess what, folks? The gas you put in your tank already has a "fuel cleaner" in it.

 

i use seafoam which helps clean injectors, ive used it a total of 5 or 6 times over the past years and have had no problems, just better gains, and they are noticeable.

i know gas has cleaners in it, but after reading an article in the local news paper, companies are only required to meet the minimum government standard for cleaners and apparentky it isnt that high. i was reading that shell gas company is stepping things up and adding more cleaning agents per gallon of fuel wich was much higher than government standards. i wish the article did a comparison on which fuel has beter cleaners, i woulda guessed mobil and chevron.

 

Hey,
Can I pour seafoam into the gas tank?? Also, would I be able to improve my cars performance while doing this? Sorry for the questions - but also, do i have to add fuel injector cleanor with seafoam into the tank??

Thanks in advance....

*used to add this cleaner stuff to my other cars years back, till someone told me it was bad* But im starting to think about it again, and have realized i've never relaly had any problems adding it.

 

Please don't ever let your brother in law work on any .org members cars.
That method of cleaning only cleans the air intake path, it never goes through the fuel injectors and doesn't clean them out. There are systems that will professionally clean your fuel injection, 3M and Champion makes them. They plumb directly into your fuel system and dispense a chemical through your cars fuel system as the engine runs. This is done with your fuel pump disconnected and the return line plugged. The engine actually runs on the chemical cleaner for about 15 minutes, until the can is empty.

Thats the correct and only way to have your fuel injection system professionally cleaned. Adding Techron or any other fuel system cleaner into your gas is just a simple fuel system cleaner and is perfectly safe to use on all gas powered cars.

 

Hey,
Thanks for the information man - do you think it would be good to pour this cleaner before refueling everytime? or should it be done every other week?

THanks in advance..

 

I put a bottle of Techron fuel injector cleaner in my gas tank every time I fill up after an oil change. So basically I use a bottle every 4,000 miles.

 

2kmaxima, ive put it in the tank and crank case and have had no problems whatsoever. as far as frequency, i onl do it 2-3 imes a year which is usuall around the time of oil changes. as far as doing it every week im not sure if it would be a good idea. might be overkill.if you are doing this for the 1st time, just do it now and then from now on just do it before every oil change. i just did the seafoam treatment today, 1 in the tank, half in the crank and half in the brake booster line, oil change is due friday.

 

The Techron should be added just before the oil change, rather than after the oil change, as it can affect the viscosity of the oil.

 

I'd like to see prof of that. It's burnt off in the combustion chamber, how does it make it's way to the crank case?

Besides that, I get my oil anaylsed by Blackstone labs and have never had them point out an issue with viscosity. You can see my oil analysis results for yourself on Bills spread sheet in the lubrication section of these forums.

That being said, I think your statement is false.

 

I'm only going by what a knowledgeable peep stated recently, having had several years experience in the petroleum industry, and being much more technically aware than I will ever profess to be.

I plan on using Chevron Techron for the first time in a few months and for my money, it will be before my oil change rather than after.

 

That is absurd hogwash. You put techron in your fuel, not your oil.

 

I didn't say I'd put Techron in my oil and don't give me the finger.

I don't put moisture in my oil either, but I understand that it can get in there. How is that? It didn't come in the oil.

 

Hey guys,
does teh company of the fuel injector cleaner make any difference? the pep boys in my local area only carries the company lucas, which i really haven't heard of, but they told me its about the same thing.

Thanks in advance...

 

I use Lucas Gas Additive