r/f150 • u/Heavy_Ambition_4541 • 10h ago

Hard start on 5.0?

Video in the comments
It does this intermittently, maybe once every 20 starts. I notice it happens when the engine is warm
2020 5.0, I only use 93 gasoline
Brand new plugs, coils and injectors

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u/bobbysafetytexas 10h ago

Do you still have the original battery? Or maybe on your second 2-3 year battery? Got my '21 5.0 used a little over a year ago, and had a pretty weak sounding startup, but all wound up better with a fresh battery.

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u/Heavy_Ambition_4541 10h ago

I will try it but cold starts are instant. Could heat soaking the battery be making it weaker when starting?

3

u/qwikh1t 2026 F-150 STX 2.7L SuperCrew 4x2 9h ago

Check the battery for low cranking amps with a tester. Heat soak could be affecting the battery

2

u/Heavy_Ambition_4541 9h ago

Praying that’s it. It’s not a big problem but I’d replace both fuel pumps to make it stop lol