Ford 6.4L Powerstroke Excessive White Smoke

Why Does My 6.4 Produce White Smoke On Startup?

White smoke is a common problem in 6.4 Powerstroke diesel engines. If you’ve noticed white smoke on startup, during high humidity or acceleration after steady-state driving, you’ll want to address the problem quickly. 

Usually, white smoke results from contamination during your engine’s combustion reaction, resulting from stiction — a slimy build-up of debris from unburned fuel in the injector. There could also be complications with your exhaust gas recirculation (EGR) cooler or other technical problems. 

Ford 6.4L Powerstroke White Smoke 

Here are some of the common causes of 6.4 white smoke:

  • Clogged injectors: Occasionally, fuel injectors will clog with carbon, dirt or other debris. If the blockage isn’t addressed, it could lead to rough cold starts, poor idling or engine misfires. If your 6.4 engine’s injector is clogged, we recommend one dose of Diesel Extreme to clean the injector and other fuel system parts. In addition to cleaning, a powerful cetane boost is provided to strengthen performance. 
  • Poor fuel quality: If water or other particles contaminate the engine’s fuel, change your fuel filter and then treat it with one dose of Diesel Extreme. The Diesel Extreme fuel additive will clear the water from your fuel tank so your truck no longer products white smoke.
  • Head gasket failure: If your 6.4 Powerstroke white smoke is sweet-smelling, your engine might be experiencing complications with the head gasket or EGR cooler. If the white smoke smells like bug spray, it’s likely caused by unburned fuel. Diesel Extreme can treat injector and fuel problems.

Prevent White Smoke

We’ll help you maintain your engine’s integrity and beat stiction with our state-of-the-art engine additives.

Diesel Extreme 

Clean your engine’s parts, eliminate DPF regeneration cycles by up to 50% and improve gas mileage with Diesel Extreme. Designed with the most powerful diesel and gasoline engines in mind, our 6-in-1 Diesel Extreme additive and fuel injector cleaner removes internal diesel injector deposits (IDIDs) — even the toughest, waxiest polymeric build-ups. Diesel Extreme will improve your truck’s fuel economy and boost your engine’s cetane rating. 

Reduce 6.4 Powerstroke White Smoke and Boost Engine Performance with Hot Shot’s Secret

We’ve specially designed our products with your 6.4 Powerstroke engine in mind. Our products are rigorously tested in our R&D lab in addition to third-party and real-world testing. We stand behind our products and offer a money-back guarantee if you’re not 100% satisfied with the results. 

Learn more about our fuel additives and don’t miss out on our special offers

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The contents of, such as text, graphics, images, and other material contained on the Diagnose Your Diesel section are for informational purposes only. Always seek the advice of your mechanic or other qualified professional with any questions you may have regarding your vehicle’s condition.