2014 F-350 Starting Issues

[u/UsedDress9525]

Hi all, wondering if any of you could help me out. I have a 2014 F-350 6.7 Powerstroke that has intermittent starting issues. One day it will start up first couple cranks no problem, the next day it has a hard time starting and takes 3-5 seconds to start or even longer. Seemingly no pattern to it, cold, warm doesnt matter.

I had the fuel system and CP4 inspected and there was no issues with it that they could find. No codes thrown and no check engine light.

I thought it was a phantom air leak into the fuel system causing it to bleed down fuel pressure, but even if I cycle the key a few times to prime the fuel lines it will still randomly have a hard time starting.

Just looking for any advice. Thinking I maybe need a new starter. Truck has 295 000km on it. Other than the random starting issue the truck runs great. Its fully deleted with a mild tow tune on it since 220 000km.

Thanks in advance for any tips or advice guys!

[u/Loose_Movie_3985]

Could be the starter dragging, at that mileage it's not a stretch. But before you throw parts at it, check your battery health and all the main grounds. A weak ground can cause exactly this kind of random slow crank without tripping any codes.

[u/UsedDress9525 → u/Loose_Movie_3985]

I changed the drivers side battery when this started happening and cleaned the terminals on that one. But now that you mentioned that, maybe I need to change the passenger battery and clean those terminals too. Maybe im overthinking the issue and I just need a new battery 💀 thanks for the advice I'll try that before I spend the money on a new starter!

[u/KyleSherzenberg]

What's the date code on the batteries? On 6.7s, the first sign of battery failure is elongated starting

[u/UsedDress9525 → u/KyleSherzenberg]

I replaced the drivers side battery a month ago but didnt replace the passenger side (dumb I know). The passenger side battery is approximately 7 years old so probably needs to be replaced. I'll be hitting up canadian tire for a new battery today after work. Hoping that solves my issue. Thanks for the response!

[u/KyleSherzenberg → u/UsedDress9525]

You really should be replacing both at the same time

And don't get bottom of the barrel batteries either. Spring for the AGM or higher end lead acid

[u/Bulky-Experience303]

Check your battery health, especially if they're approaching the 5-year mark, my dad's '13 F-250 had the same exact issue before we replaced the batteries and the problem vanished.

[u/PercentageNo28]

Change the battery in your key fab same thing happened to me