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I have a 2017 Renegade Sport, 6 speed manual. It has a little over 81K miles on it. Last Friday, I was driving on the highway, about to pass a semi and go up a hill, when I lost power. The car just started shuddering and could barely make it up and over. The service engine message came on and the engine icon was flashing. I coasted in neutral to the bottom of the hill, but the car was still shaking quite badly.
Checked oil, that was fine. While running it started to have white smoke out the tailpipe. Using the Fixd code thing, it came up with P0300 & P0304, cylinder misfires. It was still somewhat driveable. So we limped to the dealership.
Following Monday, they checked it out and found that the exhaust valve in cylinder 4 broke. The piece went into the cylinder and scored the inside. Dealership says that I need a whole new cylinder assembly!! At $2,350.00 USD, I'm trying to find out if this is a common problem. o_O

Please help.
 

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2017 Jeep Renegade Limited AWD 2.4L
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I have a 2017 Renegade Sport, 6 speed manual. It has a little over 81K miles on it. Last Friday, I was driving on the highway, about to pass a semi and go up a hill, when I lost power. The car just started shuddering and could barely make it up and over. The service engine message came on and the engine icon was flashing. I coasted in neutral to the bottom of the hill, but the car was still shaking quite badly.
Checked oil, that was fine. While running it started to have white smoke out the tailpipe. Using the Fixd code thing, it came up with P0300 & P0304, cylinder misfires. It was still somewhat driveable. So we limped to the dealership.
Following Monday, they checked it out and found that the exhaust valve in cylinder 4 broke. The piece went into the cylinder and scored the inside. Dealership says that I need a whole new cylinder assembly!! At $2,350.00 USD, I'm trying to find out if this is a common problem. o_O

Please help.
First time I’ve heard of this happening. Definitely a bummer!

I would go to an Engine Specialist in your area (unless of course you feel comfortable doing the work yourself) as the cylinder assembly on my ‘17 2.4L is only $350 (for example) not including gaskets from MoparFactoryParts.com and I’m sure you can get a better price than $2400.
 

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...as the cylinder assembly on my ‘17 2.4L is only $350 (for example) not including gaskets...
Where did you find a "cylinder assembly" on that website? The closest I could find was a cylinder head assembly.

I believe that if "The piece went into the cylinder and scored the inside" that would require replacing the engine block.
 

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Where did you find a "cylinder assembly" on that website? The closest I could find was a cylinder head assembly.

I believe that if "The piece went into the cylinder and scored the inside" that would require replacing the engine block.
Yeah, you’re right. I quickly looked up a “cylinder assembly” without much thought about it just to see what the part costs. I did price out the head assembly not thinking about the block. My bad. :whistle: And for the life of me I cannot find a block either! I’ve found diagrams referencing them, but when I scroll down it skips it. On every website.

@MHagan:
So I’m thinking boring the cylinders (enough to remove cylinder wall scratch), honing them, and installing new larger pistons/rings would be the way to go here. Assuming there is a machine shop close by.

The machine shop will most likely want you to deliver the engine to them (apart from the Jeep). I bet if you Googled “mobile mechanic” for your area that you could have one come to your home, bring an engine hoist over, and remove the engine for you and maybe even haul it to the machine shop (all for less money than a traditional shop would charge).

@georgef:
Question that eludes me is where to find larger pistons for this engine?

I believe all of this would be much less expensive than the $2400 that you were quoted. I could be wrong though. ;)
 

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Oh...first and foremost I’d definitely get a second opinion from a reputable shop in the area to see what they have to say vs the stealer...eh hem...dealership. ;)
 

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welcomegroup

and enjoy the forum!

That is a first for me to find out about. That is why I got the Max care Lifetime. Good luck.
 

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Discussion Starter #7
First time I’ve heard of this happening. Definitely a bummer!

I would go to an Engine Specialist in your area (unless of course you feel comfortable doing the work yourself) as the cylinder assembly on my ‘17 2.4L is only $350 (for example) not including gaskets from MoparFactoryParts.com and I’m sure you can get a better price than $2400.
I did call a few other garages... they quoted over $3,000. I’m an employee of the dealership who quoted me, so I think I got the cheapest available.
 

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@MHagan
That stinks!

You still might want to inquire about boring and honing the cylinders. Perhaps your dealership could remove and transport the engine to the machine shop for you. But, I’m still not sure where you can find larger pistons/rings. Might be a less expensive route rather than replacing the block, plus the added benefit of a larger displacement. 😁. Of course, if the machine shop or your dealer or someone could find the pistons and depending on the depth of the scratches. I’m assuming the scratches can’t be too deep and that a .060” bore would take care of it. Once the machine shop gets a hold of the engine they’ll probably only charge $50 a cylinder to bore ($200 in total). Honing can’t be much either.
 

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I got to thinking that I personally wouldn’t talk with your dealer about boring and honing as they want to sell you a new block and the kitchen sink along with it, so I’m sure they’ll try and persuade you not to bore and hone the existing block. I’d talk with a reputable machine shop regarding it.
 

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2017 Latitude 4x4 1.4 Alpine White, 2018 Latitude 4x4 1.4 Omaha Orange
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Considering there are a ton of these engines out there , even some with 1k on them .. why not buy a whole unit? I see them going for much less than what the dealer wants to patch the existing engine up...


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