Welcome to the forum! Without knowing what they did to make that determination it is tough to say. All that work, and two swapped head jobs, now they're suggesting an engine? I'd take it to another shop and ask what is wrong with the engine, and if it really needs an engine.

 

What all did they do on the cylinder head change?

Do you have the code(s) it is throwing? Is it just the misfire?

 

Welcome to the Forum!
What are the codes, and your mileage?

 

The code is P0304 and the mileage 85,000. As far as I know they only changed the cylinder head.

 

A worn spark plug, bad ignition coil, a faulty fuel injector, and a leaking valve are some possible causes of the P0304 code.

Were the parts that have been replaced, Mopar OEM?

 

Only that 1 code… You could try swapping the coil pack with one from a cylinder not throwing codes. If you get the same code, it’s not the coil. The code shows up on the cylinder you moved it to then it is the coll. Replace it. No cylinder change on a coil swap, change the plugs. See if code clears. If it have a code reader you could check the duty cycle of the

 

Thank you to everyone trying to help me figure this problem out. We have tried everything y’all suggest. We are going to take it to a different dealership in a couple weeks for a second opinion. Hoping for the best. We have also unplugged the computer for 24 hours and replaced the battery. Still having same issues.

 

Good call on a different Dealer!

 

in reply to cylder misfire.My daughters 2012 Wrangler was having random misfires. Was very sporadic.1 mechanic had it 3 days & couldn't recreate a misfire . Finally the father of 1 of my sonx basketball players took a look. 1 coil was partially loose so it made contact most of time. He changed the coils & plugs. So far so good When I researched prior. said anything that effects vacuum line could cause a misfire