A burning smell coming from under the hood of a 2016 Jeep Wrangler often traces back to plastic components touching the hot engine cover. If you’ve noticed that 2016 Jeep Wrangler engine cover is burning smell, you’re not alone—this is a common issue that many owners face. The smell can be alarming, but it’s usually fixable without a trip to the mechanic. Let’s break down why this happens and what you can do about it.
Why The 2016 Jeep Wrangler Engine Cover Is Burning Smell Happens
The engine cover on your 2016 Wrangler is made of plastic. It sits directly on top of the engine, which gets very hot during operation. Over time, heat cycles can cause the plastic to warp, crack, or melt slightly. When that happens, the plastic touches hot metal parts like the exhaust manifold or valve cover. That contact creates a distinct burning plastic smell.
Another common cause is oil or coolant leaks. If a small leak drips onto the hot engine cover or exhaust, it will burn and produce a smell. The engine cover itself can also trap debris like leaves or dirt, which can smolder and smell bad.
Common Causes Of Burning Smell From Engine Cover
- Plastic engine cover warping or melting from engine heat
- Oil leaks dripping onto hot engine components
- Coolant leaks from hoses or the radiator
- Debris like leaves or plastic bags stuck under the cover
- Loose or missing bolts causing the cover to shift and rub
- Aftermarket modifications that change heat flow
Identifying the exact cause is the first step. You don’t need to be a mechanic, but you should be careful. The engine gets hot, so let it cool down before you start poking around.
How To Diagnose The Burning Smell Yourself
You can check for the source of the smell in your driveway. Follow these steps carefully. Always work on a cold engine to avoid burns.
Step 1: Let The Engine Cool Completely
Park your Wrangler on a level surface. Turn off the engine and wait at least 30 minutes. The engine cover and surrounding parts can stay hot for a while. Pop the hood only after the engine is cool to the touch.
Step 2: Inspect The Engine Cover Visually
Look at the plastic engine cover. Check for any signs of melting, warping, or discoloration. The cover is usually black plastic, so look for shiny spots or areas that look deformed. Also check if the cover is sitting flush. If it’s crooked, it might be touching something hot.
Step 3: Check For Leaks
Look for wet spots on the engine or around the cover. Oil leaks often appear as dark, greasy patches. Coolant leaks are usually green, orange, or pink and smell sweet. If you see any fluid, trace it back to the source. A small leak can cause a big smell when it hits a hot surface.
Step 4: Remove The Engine Cover
If you’re comfortable, remove the engine cover. It’s usually held on by a few bolts or clips. Once removed, inspect the underside for melted plastic or burn marks. Also check the engine surface underneath for debris or leaks. This is the best way to see what’s really going on.
Step 5: Look For Debris
Check around the engine bay for leaves, twigs, or plastic bags. These can get sucked in while driving and sit on the engine cover. When the engine heats up, they can smolder and produce a burning smell. Remove any debris you find.
Fixing The Burning Smell Issue
Once you know the cause, you can fix it. Most solutions are simple and cheap. Here’s how to handle the most common problems.
If The Engine Cover Is Warped Or Melting
You have a few options. The easiest is to replace the engine cover. A new one costs around $50 to $100. You can find them online or at a Jeep dealership. If the damage is minor, you might be able to trim the melted plastic with a utility knife. Just be careful not to cut yourself or damage anything else.
Another option is to add a heat shield. You can buy a heat-resistant pad or wrap that goes between the cover and the engine. This prevents direct contact and reduces heat transfer. Some owners also use aluminum foil tape as a temporary fix, but it’s not a long-term solution.
If There Is An Oil Or Coolant Leak
Leaks need to be fixed at the source. Common leak points include the valve cover gasket, oil filter housing, and coolant hoses. If you’re handy, you can replace these parts yourself. If not, take it to a mechanic. Ignoring a leak can lead to bigger problems like engine damage or fire.
After fixing the leak, clean up any spilled fluid. Use a degreaser to wipe down the engine cover and surrounding areas. This will prevent future smells from old residue burning off.
If Debris Is The Culprit
Simply remove the debris. Check the engine bay regularly, especially after driving through areas with lots of leaves or trash. You can also install a mesh screen under the hood to keep debris out. This is a cheap mod that many Wrangler owners do.
Preventing The Burning Smell In The Future
Once you’ve fixed the issue, take steps to prevent it from coming back. Regular maintenance is key. Here are some tips.
- Inspect the engine cover every oil change for signs of wear
- Keep the engine bay clean and free of debris
- Check for leaks monthly and fix them promptly
- Consider upgrading to a metal engine cover if you drive in hot climates
- Use heat-resistant tape or wrap on areas that get very hot
- Don’t ignore any new smells—address them quickly
Prevention is easier than repair. A few minutes of checking can save you from a smelly drive or a costly fix.
When To See A Mechanic
Some situations require professional help. If you can’t find the source of the smell, or if the smell is accompanied by smoke, take it to a mechanic. Also, if you notice performance issues like rough idling or loss of power, get it checked out. A burning smell can sometimes indicate a serious problem like an electrical short or a failing gasket.
Don’t drive with a strong burning smell for long. It could be a fire hazard. Better safe than sorry.
Signs You Need A Mechanic
- Smoke coming from under the hood
- Strong smell of burning oil or coolant
- Engine warning light is on
- You see visible flames or sparks
- You’re not comfortable working on the engine
If any of these apply, call a mechanic. It’s not worth risking your safety.
Frequently Asked Questions
Why Does My 2016 Jeep Wrangler Smell Like Burning Plastic?
The most common reason is the plastic engine cover touching hot engine parts. Heat causes the plastic to melt or warp, producing a burning smell. Check the cover for damage and replace it if needed.
Can A Burning Smell From The Engine Cover Cause A Fire?
Yes, it can. If plastic melts and drips onto hot exhaust parts, it can ignite. Also, if the smell is from an oil leak, that can catch fire. Address the issue as soon as you notice it.
How Much Does It Cost To Replace A 2016 Jeep Wrangler Engine Cover?
A new engine cover costs between $50 and $100. You can find aftermarket options for less. Installation is simple and takes about 10 minutes.
Is It Safe To Drive With A Burning Smell From The Engine?
It’s not recommended. Drive only to a safe location or a mechanic. The smell could indicate a fire risk or mechanical issue. Don’t ignore it.
Can I Remove The Engine Cover Permanently?
Yes, you can. The engine cover is mostly for aesthetics and noise reduction. Removing it won’t harm the engine. Just make sure no debris gets into the engine bay.
Final Thoughts On The 2016 Jeep Wrangler Engine Cover Burning Smell
A burning smell from your 2016 Wrangler’s engine cover is annoying but usually fixable. Start by checking the cover for melting or warping. Look for leaks and debris. Fix what you find, and take steps to prevent it from happening again. If you’re unsure, ask a mechanic for help.
Your Wrangler is a tough vehicle, but it needs regular care. Don’t let a small smell turn into a big problem. With a little attention, you can keep your Jeep running smothly and smelling clean. Stay safe out there.