Best Fuel Injector Cleaner Experiences

[ibandaey]

Hello! My Husband bought me a Suburban! 1999 With the 5.7, 1500 4x4. I am getting 12-12.5 MPG!
It hauls the Kids great! I love it!!! So my question to you guys is what is the best Fuel Injector Cleaner you have ever used and what did you do to get it to work the best... how many times did you run it through your gas tank??? ect ect....
Just to let you know it has new plugs, wires, fuel filter..... ect ect and it Just hit 122,000 miles
I just want to know your experiences with fuel injector cleaners.
Thank you

[Blue Bowtie]

The best fuel injector cleaner I ever used is This Process

As for cleaners which do not require removal of the injectors, Chevron Techron injector cleaner has provided reasonable success for me. Just follow the label recommendations. One bottle for 12-15 gallons has always been a good start.

If you are concerned about fuel mileage, check your air filter, PCV valve and vacuum lines, tire pressure, alignment, rear brakes, and test th eoxygen sensor activity and output. At 122K, the sensor could be getting weak, costing you fuel.

[SLJ2137694]

Use Top Tier Gas and you shouldn't have to worry about cleaning injectors or other deposits.http://toptiergas.com/

[Tuffdrvr88]

As a heads up for next time i would run the fuel injector service about a month before i changed the fuel filter out. I use a couple things in my business. BG44k and Amsoil P.I. to add to the gas and let run. I also use SeaFoam which you can buy at your local parts store, i think it works awesome. With the car warmed up already, you would disconnect the PCV hose from the Brake Booster and poor 1/3 of the can down the hose. This hose has vacuum so you'll feed it in slowly or you will stall the engine. Not a big deal if you do, just restart it and let it run for a second before continuing. Once you have that 1/3 in you turn the vehicle off and let it set for 15 minutes. Then crank it up and drive it around on the highway for a little while until all the white smoke is done exiting from your tailpipe. All the cars i work on are older vehicles and this cleans them pretty darn good. I also do it on my 94 Suburban w/ 350. I get 16mpg. Good luck to you.

[GMMerlin]

Originally Posted by ibandaey

Hello! My Husband bought me a Suburban! 1999 With the 5.7, 1500 4x4. I am getting 12-12.5 MPG!
It hauls the Kids great! I love it!!! So my question to you guys is what is the best Fuel Injector Cleaner you have ever used and what did you do to get it to work the best... how many times did you run it through your gas tank??? ect ect....
Just to let you know it has new plugs, wires, fuel filter..... ect ect and it Just hit 122,000 miles
I just want to know your experiences with fuel injector cleaners.
Thank you

The injectors in your truck are not the traditional injectors most vehicles have. You have a POPPET style injectors on your truck and conventional cleaning methods WILL NOT WORK! Don't believe the hype.
There are 2 ways you can fix this.
1. Install the updated injector unit for this vehicle that changes to poppet style injectors to regular multec style injectors.
Or
2. Have the poppets unstuck. To do this, high pressure nitrogen (150psi) is forced thru the poppets to unstick them..Sometimes if a poppet is severly stuck, this method may not unstick it and option 1 will have to be done.
If you are having cold start misfires, this is a good indication of severly stuck poppets.
Either one of these options are available from your GM dealer.
Either way you go, make sure you use TOP TIER gasoline whenever you fill up, this type of gas has additive packages to prevent injecotr and poppet clogging.
Good Luck

[wafrederick]

Lucas is another great fuel system cleaner and it works.Lucas is sold at most parts stores.