2017 1500 with 15000 miles thows code

[Farmer Fran]

P0304... Misfire in #4. Yeah. Off to the dealer.

 

[Rampant]

What specific oil & filter are you using?

 

[chrisbh17]

What specific oil & filter are you using?

This.

And when has it been changed?

 

[Farmer Fran]

Mopar filter, Valvoline 5-20 changed ever 5K (3 times now).

 

[Farmer Fran]

Why do you ask?

Dealer reset the code said plug and injector seemed fine. Keeping an eye out for it to return or not

 

[Rampant]

Mopar filter, Valvoline 5-20 changed ever 5K (3 times now).

Which Valvoline? Conventional, blend, or full syn? Is there any valve train noise or "ticking" sound? The reason I ask is because there have been a lot of cam/lifter issues with these engines that seem to correlate to oil/filters used. It seems most are having issues while using oils with low Moly and/or Zinc content. One thing they all have in common is that a misfire code starts the ball rolling and some fail fairly quickly after getting the code.

 

[huntergreen]

15000 miles is kind of early for a lifter failure, but not impossible. I would check the coil by swapping it with another cylinder and see if the misfire follows.

 

[Farmer Fran]

Which Valvoline? Conventional, blend, or full syn? Is there any valve train noise or "ticking" sound? The reason I ask is because there have been a lot of cam/lifter issues with these engines that seem to correlate to oil/filters used. It seems most are having issues while using oils with low Moly and/or Zinc content. One thing they all have in common is that a misfire code starts the ball rolling and some fail fairly quickly after getting the code.

Full syn.

 

[Farmer Fran]

Also this engine has no tic. My 2015 Sport sounded like it had a sewing machine unund the hood

 

[indept]

15000 miles is kind of early for a lifter failure, but not impossible. I would check the coil by swapping it with another cylinder and see if the misfire follows.

Why bother, if it's a real problem it will come up again way before the powertrain watranty expires.

 

[huntergreen]

Why bother, if it's a real problem it will come up again way before the powertrain watranty expires.

.

Moving coils around is an easy way to rule out or rule in a simple problem.

 

[Farmer Fran]

So the truck threw the code one more time over the last 1.5 years. The dealer could not find anything wrong. It never really seemed to matter, the truck ran fine - accelerated, idle, etc... Well last week around town it threw the code again and it was running rough like a "slipping transmission", I took it to the dealer and low and behold it was the coil pack. Replaced under warranty.

The million dollar question is, why is it always #4 on these engines?