Popping sound

[ob1]

I’ve noticed this too after fueling up - especially with 93 vs lower octane. That might just be coincidence with the higher octane.
I have no idea why this happens.

 

[sixshooter_45]

I was told by someone here on the forum that it was making adjustments, maybe timing (don't remember), due to the fuel.

 

[dirtyboot]

Interesting that you say that; I did fill up Tuesday first thing, and spent all day trying to think of what it could be as it happened almost every time I went from throttle to normal stopping brake pressure. After noting this thread, I've driven for 1.5 hours today, and haven't been able to get it to happen, doing exactly what I did Tuesday. I'm sitting at maybe a little over 7/8 tank right now.

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[ob1]

I forgot to mention that it only occurs for about 1-2 minutes after fueling up.

 

[vamsye]

This is another thread I found, but I don’t see any real reason why it does that.

https://www.fordraptorforum.com/threads/loud-pop-on-decelerations.73310/

 

[dirtyboot]

Reading that, I didn't have my truck in sport mode today, think I did Tuesday. Will test tomorrow and post results.

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