Code P0300 assist.
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5th Gear
Joined: Apr 2019
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Code P0300 assist.
Hello all. New to the forums and could use some knowledge. 2018 F-250 6.2 60k miles threw a code one time the other day. I have been experiencing the delayed start at times but the wife started the truck when I was not there so I'm not sure what happened. (Had to let her since her transmission just crapped on her car) Did all the reading I could and am going to start with the plugs(motorcraft double platinum)Any thoughts. Next question. Do the wires need to be done too? Recomendation on all of the parts the ones on the truck have the metal caps and all I can find are some on rock auto, trq and mororcraft(these are expensive) nothing at the retail places. First major maintenance so any help is appreciated Thanks in advance.
Tuned
Joined: Jun 2004
Posts: 319
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Code P0300 is a generic misfire code. If you could get a deeper diagnostic you might get which cylinder(s) are misfiring. Replacing plugs and wires might not be the fix but if they are due by time or mileage then why not cover all your bases.
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5th Gear
Joined: Apr 2019
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Starting point!
Unfortunately/fortunately no other codes have been able to be identified and it was a one time thing so far. Book says 100k I believe but others have said 60k on plugs if towed a bunch and I've done my share of towing so going to start at what I hope is the simplest solution(I have my doubts) Thank you
Logistics Pro
Joined: Jan 2010
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Generally speaking, the first step to solving P0300 is recommended to change out plugs and wires. BUT it doesn't always fix it.
What you need to do is try to troubleshoot what caused it. Could have been bad fuel, dirty air filter, etc. etc. It could have even been a fluke. What you need to do, to actually troubleshoot it, is to get some live data and look for misfires and see if anything else is going on.
What you need to do is try to troubleshoot what caused it. Could have been bad fuel, dirty air filter, etc. etc. It could have even been a fluke. What you need to do, to actually troubleshoot it, is to get some live data and look for misfires and see if anything else is going on.
Fleet Mechanic
Joined: Mar 2021
Posts: 1,454
Likes: 606
Generally speaking, the first step to solving P0300 is recommended to change out plugs and wires. BUT it doesn't always fix it.
What you need to do is try to troubleshoot what caused it. Could have been bad fuel, dirty air filter, etc. etc. It could have even been a fluke. What you need to do, to actually troubleshoot it, is to get some live data and look for misfires and see if anything else is going on.
What you need to do is try to troubleshoot what caused it. Could have been bad fuel, dirty air filter, etc. etc. It could have even been a fluke. What you need to do, to actually troubleshoot it, is to get some live data and look for misfires and see if anything else is going on.
https://www.ford-trucks.com/forums/1...xperiment.html
Tuned
Joined: Feb 2017
Posts: 465
Likes: 38
The Torque pro app will count misfires also. I did the plugs and wires and still had the code. After identifying the bad cylinders I picked up the coils I needed.
Last year replaced 4 coils and this year 2 more started to go. I did try the rebuild boot kits 1st....did not last. Good luck.
Last year replaced 4 coils and this year 2 more started to go. I did try the rebuild boot kits 1st....did not last. Good luck.
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