P0300 Code

[Wojciech Gierczynski]

I've changed my spark plugs about 5 months ago to Ford Performance ones gapped at .026. Did not have any problems until yeaterday. Truck started to throw P0300 code (random misfire). Thats the only code it has and it runs perfectly. No engine shudder, no rpm fluctuation and pulls just fine. We had cold snap recently of about -30°F with wind chill. Could the weather be the culprit of it?
On my FordPass app it shows as 11 events for P0300.

 

[isis]

Bad gas

 

[Wojciech Gierczynski]

I think you are right. I pumped full tank yesterday and today in the morning check engine light turned off and code went away.

 

[GordoJay]

... We had cold snap recently of about -30°F with wind chill...

Agree probably bad gas. For future reference - Your truck doesn't feel wind chill. Only the ambient temperature is important.

 

[smurfslayer]

Wife’s Lincoln had similar symptoms- code, lack of any visible symptom - turned out to be a mass replacement of injectors and I think the fuel rail(?). Don’t have the receipt in front of me but yeah, not always the spark side.

 

[nikhsub1]

Your truck doesn't feel wind chill.

Yeah but my nuts do...

 

[Sharpie69]

Yeah but my nuts do...

You need to keep those things indoors

 

[pete888]

Misfire on cylinder #1. Turn out I had a bad coil pack.