NEVER Use These 7 Fuel Injector Cleaners (But 3 that Actually WORK!)

🔗 Save $7,000 A Year By Keeping Your Old Car Alive Instead Of Replacing It: https://carlosherreracars.com You pour the bottle into the tank, drive a few miles, and wait for the rough idle to smooth out — but nothing changes. Maybe it got worse. You bought what the parts store recommended, the one with the bright label and the bold claims, and now you're wondering if fuel injector cleaners even work at all. Amigo, some of them don't — and a few can actually damage your system. I'm Carlos, a Mexican-American mechanic, and today I'll show you which ones to avoid and the three that actually clean injectors the old-school way. In this video: • The 7 fuel injector cleaners that waste your money or cause problems • Why certain additives leave residue instead of removing it • The harsh solvents that can damage older fuel system seals and o-rings • Products that claim to clean but contain mostly carrier fluid and no real detergent • Why some cleaners work in newer engines but harm older carbureted or throttle body systems • The 3 fuel injector cleaners mechanics actually use and trust • What makes these three different — the chemistry that breaks down carbon deposits • How to use them properly so they work through the whole fuel system • How often you should run a cleaner based on your driving and fuel quality • Signs your injectors are actually clogged and when a cleaner won't be enough • The simple maintenance habit that prevents most injector problems in the first place No fancy products to sell you, no sponsored recommendations — just the truth about what works and what doesn't. I've tested these in my own shop, on customer cars with real problems, and I'll tell you exactly what I've seen. Tell me in the comments what car you drive, what year it is, and if you've ever used a fuel injector cleaner. I read every one.