Tech Tip: How to spot and clean a dirty fuel injector

Dec. 29, 2017
Impure fuel can produce byproducts which build up and clog fuel injectors.

Fuel injectors have the finest tolerance of any mechanical part of an engine, opening and closing in millionths of a second to spray a controlled dose of fuel. Unfortunately, impure fuel - particularly blends containing ethanol or too little detergent - can produce byproducts which can build up and clog fuel injectors, robbing them of efficiency.

This article will cover:

  1. How to spot the symptoms of a dirty fuel injector problem.
  2. How to remove buildup on fuel injectors using a premium injection cleaner like Rislone Complete Gasoline Fuel System Treatment or Rislone Complete Diesel Fuel System Treatment.
  3. How to keep your customers’ gasoline and diesel engine fuel injectors operating at peak efficiency.

Symptoms of clogged fuel injectors

  • Difficulty starting.
  • Poor or rough idling.
  • Failed emissions test.
  • “Check Engine” light is on.
  • Increased fuel consumption.
  • Sluggish acceleration.
  • Inability to reach high RPMs.
  • Engine knocking.
  • Lean misfiring, which feels like the vehicle is jerking.
  • Surging and bucking under different throttle loads.
  • Smoke coming out of the tailpipe.
  • Fuel odors within the vehicle.

How to clean a fuel injector

There are a lot of fuel injector treatments out there, and while some of them work quite well, others do very little because the dosage is too small or the potency is too weak. The best safeguard for your customers, and your organization, is to only use fuel injector cleaner products with proven track records. Look for products made by companies that have been in business for decades and stand behind their products with an ironclad guarantee. The products that really work stand the test of time. To clean the fuel injectors, simply install the premium fuel injection cleaner into a full tank of fuel. Yes, it’s that simple.

How to keep fuel injectors operating a peak efficiency

Once the fuel injector cleaner has done its job, you’ll want to help your customers keep their fuel injectors clean. Save your customers some time and money by choosing a complete fuel system cleaner and gas treatment that cleans and maintains not just the fuel injectors, but the engine’s valves and combustion chamber as well.

Rislone Complete Gasoline Fuel System Treatment and Rislone Complete Diesel Fuel System Treatment were developed to be used once every 5,000 miles or more often if there are symptoms caused by severe weather or poor seasonal fuel. For gas engines, Rislone Gasoline Fuel System Treatment is a fuel injector and pump cleaner, valve and combustion chamber cleaner, upper cylinder lubricant, fuel stabilizer, gas dryer, gas treatment and octane booster. For diesel engines, Rislone Diesel Fuel System Treatment is a fuel injector and complete fuel system cleaner, ULSD sulfur substitute lubricity additive, UCL pump and injector lubricant, anti-gel cold flow improver, decarbonizer, fuel stabilizer, water remover and cetane booster.

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