P0302 Cyl. #2 Misfire...Stumped

[Hemi395]

I will admit, performing the cam swap on this truck and engine was actually easier than I thought it would be. For me, it was just time consuming. But if I went back and did it again, it'd probably only take me 8 hours or so.

As for a write-up...I will see what I can do. I didn't take many photos throughout the process. I do however have the service manual (most of it) for the 2010 truck, which I acquired during my days at FCA. That helped tremendously.

Here are the photos of the bad camshaft and culprit lifter:

View media item 24910View media item 24908View media item 24909

So it's not a bad job to swap the cam and lifters? I'm assuming you didn't have the head machined when you put it back, just a new head gasket?

 

[Kap1]

Thank you for sharing your experience with everyone!

 

[dustinjm87]

Hey all, reviving an old thread. Im having these exact issues. I did the simple things, replaced plugs, coil pack and o2 sensor. still getting a misfire on cylinder 2 when driving on the highway or under extra throttle. I do not have any engine knock or tick. Not even the Hemi tick. Engine has 275,000km on it.

Does it still sound like a cam and lifters situation?

 

[Curt Gobbell]

pull the valve cover from the passenger side. locate the #2 intake and exhaust pushrods and rocker arms and check for excessive play vs the other 3 cylinders on that side.

If you have excessive play...then either the lifter is shot or the lobe is flat.

2014 5.7L Knock/Tick/Tap?

I have a 2014 Ram Laramie Limited with the 5.7L Hemi with 145k on the truck. Today, out of the blue, it started ticking/tapping/knocking (not sure how to describe it). Here is what I have diagnosed so far; 1. The noise matches engine speed 2. Same sound/volume in drive, neutral or reverse 3...

www.ramforum.com

 

[dustinjm87]

pull the valve cover from the passenger side. locate the #2 intake and exhaust pushrods and rocker arms and check for excessive play vs the other 3 cylinders on that side.

If you have excessive play...then either the lifter is shot or the lobe is flat.

2014 5.7L Knock/Tick/Tap?

I have a 2014 Ram Laramie Limited with the 5.7L Hemi with 145k on the truck. Today, out of the blue, it started ticking/tapping/knocking (not sure how to describe it). Here is what I have diagnosed so far; 1. The noise matches engine speed 2. Same sound/volume in drive, neutral or reverse 3...

www.ramforum.com

Thanks for the quick reply, I certainly will give that a try depending on your answer to the next question. ( want to avoid taking the valve covers off as the bolts holding them don't look like they're going to agree with removal )

My truck does not misfire if it's in park or neutral and I rev it up. I can hold it at 4000rpm and she runs smoothly. Does that maybe lend itself to more of a fuel delivery issue than a mechanical issue?

 

[Curt Gobbell]

1. Spray PB blaster on your valve cover bolts. Use enough so it runs down through the valve cover and hopefully gets in the threads
2. Engines not under load (i.e. in neutral) will behave differently vs with a load. For example, a few weeks ago, I got a random misfire code and the truck would not run in gear. In neutral it ran decent at higher RPMs. Root cause...broken valve spring on #5 intake. Why the engine didn't register a #5 misfire is beyond me.

P0300 Only. Will Run Fairly Smooth at 3k RPM, but not below 2k RPMs

Problem fixed Cause - broken valve spring on #5 intake Solution - spent $600 on parts, pulled the heads and did a complete valve job this weekend. Runs like a champ now. Local shop wanted $2100 to replace the springs on the driver side only

www.ramforum.com

 

[Dodge 1500 4X4]

pull the valve cover from the passenger side. locate the #2 intake and exhaust pushrods and rocker arms and check for excessive play vs the other 3 cylinders on that side.

If you have excessive play...then either the lifter is shot or the lobe is flat.

X10 take valve cover off and give it a visual.

 

[dustinjm87]

Well took it to dealer, it is indeed internal engine damage. 5500$ rebuild, maybe less if cam isn't damaged yet.

Deciding whether to go ahead or not. Truck does have 275,000km but, from my point of view is solid otherwise. I will get dodge to do a health check before any go ahead but....what are some other major things I should be concerned about?

How is the longevity of the transmission and transfer case on these? Rear end have any common issues at these higher km?

 

[06 Dodge]

Well took it to dealer, it is indeed internal engine damage. 5500$ rebuild, maybe less if cam isn't damaged yet.

Deciding whether to go ahead or not. Truck does have 275,000km but, from my point of view is solid otherwise. I will get dodge to do a health check before any go ahead but....what are some other major things I should be concerned about?

How is the longevity of the transmission and transfer case on these? Rear end have any common issues at these higher km?

IMHO if you don't install a new cam & lifters an get the heads worked then your shooting your self in the foot wasting $$$, with 275km on it, it needs to be replaced along with the heads being reworked. Have you looked around to see if you can get a remanufactured engine?

 

[Lee Peterson]

I have 370,000 on my 2009. I have 0 transfer case and rear end problems and engine is custom tuned and runs strong still. I have replaced 1 trans but I beat on my truck daily!

 

[dustinjm87]

I'll go with whatever the dealer suggests, which I imagine will include the cam in the end..

As far as I can tell they're replacing all the moving parts on the heads. The mechanics writing was a little messy. There was probably 10-12 different things listed. I left the list at work, otherwise I'd double check and tell you exactly what was listed.

IMHO if you don't install a new cam & lifters an get the heads worked then your shooting your self in the foot wasting $$$, with 275km on it, it needs to be replaced along with the heads being reworked. Have you looked around to see if you can get a remanufactured engine?

I probably could look around for a reman engine, although I think I'd trust the dealers work more, and it comes with a 2 yr parts and labour warranty on everything replaced.

 

[dustinjm87]

So the list of replacement parts is

Head gasket L&R
Cam
Front lifters
Back lifters
Timing cover gasket
Intake rocker shaft assembly
Intake valves
Pushrods
Oil change
Antifreeze
Intake gasket

Any other parts you strongly suggest?

 

[Daw14]

Water pump, oil pump ?