My poor 2010 1500 P0303

[Broke pilot]

Well, cruising home from the airport a couple nights ago I got a random shudder on the highway off and on with a flashing CEL. Quick scan showed the P0303, misfire on cylinder 3. Swapped the coil and plugs with cylinder 1 to see if it followed, it didn't FML. Cranked it up and it's got a bad tick from the left bank. Just dropped it off at my brothers shop, they're tearing into it to look for a broken valve spring. Keep y'all fingers crossed that a lifter didnt collapse. I checked the oil and it doesn't seem to be making metal, so hopefully the cam is still good!
107k miles, stock with a flowmaster...
I'll keep y'all updated...

 

[theviking]

Broken spring would probably be the most common culprit. Bit of a PITA to change springs on these trucks but if one went I'd suggest doing them all. It's a fairly common problem. I believe Ram has gone through something like 4 revisions on Hemi springs since 2003.

 

[Broke pilot]

Yep, I've heard the same... I just wish I had the time to do it myself. I hate paying people to Work on my trucks.

 

[Broke pilot]

As of yesterday, they're digging deeper. Valve springs were good, now it's onto the lifters and possibly the valve seats
FML

 

[theviking]

As of yesterday, they're digging deeper. Valve springs were good, now it's onto the lifters and possibly the valve seats
FML

Ouch, sorry to hear that.

 

[Broke pilot]

Ok here we go... Exhaust cam lobe on #3 is wiped. Not completely which is good so there's not much metal in the motor. What really sucks is cylinder 3 isn't an mds cylinder, so that really makes me wonder why the lifter went bad.
So, I'm ordering a factory cam, new set of 6.1L lifters and having them unplug the Mds solenoids and getting a tuner. Ouch...