Alright y’all so I was throwing a p301 code and found out that it was a sticking/ leaking/ clogged fuel injector. I replaced all fuel injector and now I’m throwing a p0300 . Just wondering if anyone. Has had this issue
P0301 and p0300
- Thread starter selenarainie
- Start date
It’s a 2014 Jeep wrangler
i did not, to my knowledge they were good before changing the interiors
When my first code came up for the P0301 oh, I change the spark plugs and swapped coil packs with another cylinder to see if it would transfer and it didn’t transfer.
Hi Selenarainie, I thought I’d seen your post over the weekend. So you did a vacuum leak test. I assume no leaks, ‘cos you didn’t elaborate. Still got a P300 showing? The best addition to my tool kit was a leak down tester for my misfire issue.
I was convinced it was everything else because it ran so well until I got a misfire at idle in traffic conditions. The leak test identified poor cylinder compression which ultimately lead to an instant repair, but it had me fooled. Keep your post/thread going, it’s interesting and you’ll get a fix.
You say that you found out the cause of the code was a bad fuel injector. How was that discovered? The initial code says cylinder 1 was misfiring, while the second, P0300, indicates the problem has spread, and now is happening randomly among the cylinders. Do you know how many miles are on the plugs, coils, and wires? It sounds as if the original repair might not have worked properly.