[Hearthing]

Its actually pretty simple once you remove the right hand side dash cover, there are 7 t-25 screws that hold the glovebox on and one 7/32nds screw that hold the cabin air filter in the housing. I removced mine and it looked like it hadnt been changed since brand new it had leaves in it and was very black.

Wow. This is definitely something I will see about doing myself. Yikes.

 

[Usafle]

I'm not sure what a potential issue—if any—the injectors are. I just do it for “peace of mind”. Furthermore, I've run SeaFoam in every gas vehicle I've owned and haven't had any negative side effects from it's use, only positive.

I also put it into the crankcase a few hundred miles before an oil change (like it states you can use it there also). Some people run it in the crankcase the life of an oil change but that makes me nervous so I only put it in there before an oil change to "wash" it out with fresh oil. My 2006 SRT8 has been running SeaFoam in the gas tank and the fuel and that car pretty much lives in my garage hooked up to a battery tender for most of its life due to its rarity, and it starts up every single time without issue.

How much of a potential issue are fuel injectors on these engines?

 

[BryceLi]

How much of a potential issue are fuel injectors on these engines?

As far as I know, these engines (at least with the turbos) are direct-injection (yes?). For those that might not know, that means the fuel is injected directly into the cylinders, past the intake valves. As opposed to the older common-rail injection systems, where the fuel is injected prior to the valves.

And because fuel in direct-injection engines doesn't "wash" over the intake valves, those valves are particularly susceptible to getting crusted-over with carbon deposits. And nothing in the fuel (detergent additives, SeaFoam) will help with carbon build-up on the valves.

So SeaFoam might help with fuel injectors -- couldn't hurt. But not at all with intake valves.

Congrat on your Renegade! I got my 2015 TH with 80k miles about a year before.

As far as I know, the 2.4L Tigershark used Multi-point fuel injection instead of direct injection, this is why the spark plugs in 2.4L have longer duration than 1.4T. So, the seafoam technically could be helpful. Although my personal experience tells me there is no obvious difference before and after using the seafoam (including put it in fuel tank, oil, and even use the throttle cleaner). Maybe just because my renegade is not old enough for those additives to actually make any differences? 😢

 

[Marek K]

As far as I know, the 2.4L Tigershark used Multi-point fuel injection instead of direct injection

Makes sense.

Point is, before someone invests in chemicals in the fuel tank to try to prevent or fix carboned-up intake valves, they need to know whether they're got a direct-injection or a common-rail injection engine. Direct-injection won't benefit from anything in the fuel tank, regarding the intake valves. Common-rail? Maybe...

I don't know what kind of injection my 1.3T engine has, but I'd suspect it's direct-injection...

 

[DogsRule]

Oy. The 1.4L you have does not have direct injection. It has regular multiport fuel injection. Engine has best economy and performance with premium octane I use Tier 1 gas. If you can’t use that regularly, drop a bottle of Techron twice a year in the tank.

Personally, I live in Ohio’s north coast. I drive 50 miles each way on an expressway on cruise control. I use premium ($1 more per gallon) 6 months over summer, but in the cold, back to regular.

Any dealer can get you a service/complaint history and redact any previous owner details. If your state uses salt, highly recommend an oil spray underneath.

Good luck.