13 Symptoms of a Bad and Clogged Fuel Injector [Watch ASAP!]

[@PlumbCarton5607]

My engine makes a tapping noise and it's the loudest around the back of the engine (where the fuel injecters are, transverse i4) i also once whitenesed it shutter recently as if was falling asleep and went up in rpm to stay awake. Timing chain looks fine.

[@drama715]

My truck turns over and cranks but doesn’t start , would that be bad fuel injectors ?

[@angelamartim8337]

5:09 What if the engine only rough idles at cold starts? Does that still mean it's a fuel injector issue?

[@carcareclues]

Rough idling at cold starts could hint at a fuel injector issue. A partially clogged injector sometimes clears as the engine warms up. However, other factors might also be involved. Sensors, like the coolant temperature sensor, can impact cold starts. Additionally, cold starts affect the air-fuel mix, sometimes causing imbalances. Start by checking the injectors, but keep these factors in mind. Thanks for watching and engaging with the video

[@angelamartim8337]

@carcareclues Thanks for the good info. Can you please explain why a partially clogged fuel injector may clear after the engine warms up? What is the logic behind this? Thanks once again.

[@carcareclues]

@@angelamartim8337 A partially clogged fuel injector may clear up as the engine warms because heat can thin out fuel and loosen debris, allowing fuel to flow more easily.

[@angelamartim8337]

@@carcareclues Thanks. Alright, I got another one for you, if I may. For example, I've just recently found a video about "air-fuel ratio" and the author says a richer mix will protect the engine because the more gasoline injected, the less heat it will produce. Isn't it the other way round though? If I learned correctly, the engine will consume more gasoline after cold starts because it is trying to heat up faster, not cool it down. What is your opinion on this one? Thanks again!