Engine Bay Covers: Cosmetic or Comedic?

Engine Bay Covers: Cosmetic or Comedic?

Each year, it seems engine bay covers get bigger and more difficult to remove.

You can probably remember opening the hood on a 1980s car or truck if you are an older tech, where most parts were covered in a sea of semi-gloss black paint. Hoses, wiring looms and intake manifolds were naked in the engine bay. Under the hood, it was monochromatic, like a black and white movie.

In the 1990s, the engine bays got a makeover or at least a new wardrobe in the form of plastic engine covers. These covers are becoming a plague for technicians, and it is only getting worse. In my opinion, every year they get bigger and more difficult to remove.

They used to “clean up” the engine bay, hiding unsightly wire harnesses, piping and intake manifolds. My first experience with them was on a Buick 3800. The cover could be removed by twisting the oil cap and strategically pulling on the corners. Anybody could remove it in under five seconds.

Soon, I started to notice more of these covers. Like the 3800, it did not take any tools to remove them, or maybe just the turn of a few screws like on the Cadillac Northstar.

It got worse; I started to notice more insulation and fasteners. Some automakers like Hyundai saw the cosmetic and comedic value of these covers by making a transversely mounted V6 look like a longitudinally mounted V6.

Most engines could operate without the cover. When I visited a shop, there would often be a pile of engine covers at shops waiting for their owners to return. Most customers never noticed the cover was missing because they never opened the hood. 

During the past decade, more of these covers are turning into sound-dampening devices so the driver is not exposed to the clatter of injectors, the whir of a camshaft or the drumming of the high-pressure fuel pump. Some OEMs are even molding resonance chambers into the cover for the air intake.

On one late-model engine, it took me more than five minutes to figure out how to remove the cover. Worst of all, it made the engine bay look like an appliance that could wash clothes or bake a cake.

Unfortunately, these covers add one more step to the repair process. In my opinion, it is not making it into the labor guides. Maybe there should be an extra labor charge if the engine does have a cover.

What is your worst engine cover? Send an email to [email protected]

You May Also Like

Adapting To Enduring Expectations 

Where we once provided business and technical information in a monthly print magazine, we now have daily newsletters and on-call websites to help spread the message of quality service.

My last name isn’t Ford, Diesel, Kettering or Watt, so my contributions to the automotive industry may never be covered in the automotive classes of tomorrow (or even remembered past today).

Yet, I do take credit for one industry first, at least within the storied history of Babcox Media – I ushered the era of electronic communication into the pages of our magazines.

Do You Want The Bad News Or Good?

There are many ways you can help play the long game, and TechForce has free resources to help inspire and promote the profession. 

Timeless Quotes Teach & Inspire

Here are six quotes that every future shop owner should live by.

EV Charging

Charging will get better as technology improves and drivers change their behaviors.

Keep On Rockin’ Into The New Year

Nominations are still open for Vehicle Care Rockstars!

Other Posts

Belt Service For Hybrid and Stop/Start Systems

Knowing how to “force start” a hybrid vehicle can be helpful if you are trying to diagnose a noise problem.

Hybrid Vehicle Fluid Maintenance

There are opportunities your shop can’t pass up just because the car or SUV has a hybrid badge on the back.

Ignition Coil Output

To see inductance inside the primary windings, use an amp probe placed around the positive wire for the ignition coil.

Jump Starting an EV

If an EV with a full battery won’t start, here’s how you can get it up and running.