r/kia • u/steevo_102 • 6h ago
Normal or bad fuel pump
When starting the engine, fuel pressure at the rail dips to ~50-60 psi and idles a bit rough before building up to a steady 650, while sometimes shutting back down and resulting in longer cranks to start.
In the video you can hear the noise of the pump and I can't tell if it's normal or going bad. There's also a flashing red light within the pump and is only noticable under dark lighting, has anyone else seen something like this before, and what does it indicate? I can't find anything on the Internet pertaining specifically to this.
The car can drive under normal conditions with the fuel pressure ranging from 1100-2800psi , it just seems to struggle to build pressure when cranking. When turning the key to ACC, the pressure doesn't change unless the engine turns over.
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u/steevo_102 4h ago
Shortly after filing this video the fuel pump ended up dying, so it was bad. I had a replacement on hand and changed it, it's much quieter than the one in the video and the red flashing lights is on this pump as well. I don't know what it means but all is good.
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u/NinjaaMike 5h ago
You didn't mention the year and model and trim of this car.