Do-It-Yourself (DIY) Guide - How to detail the engine bay to award-winning showroom - Hyundai Genesis Forum
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post #1 of 13 Old 10-10-2014 Thread Starter
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Lightbulb Do-It-Yourself (DIY) Guide - How to detail the engine bay to award-winning showroom

DISCLAIMER: Detailing the engine bay is not for beginners and it is recommended to be done by a professional. I will not be liable for anything that can happen should you do it by yourself. This is purely at your own risk.


While most of us routinely maintain our car’s engine to ensure that it is mechanically sound, we often overlook the cosmetic side. Though out of view for most of the time, we cannot avoid seeing the engine bay during a car show or even showing it off to somebody. Also, having a dirty engine bay increase the risk of the dirt being inhaled the car’s intake. While there is an air filter filtering the particles, there is a chance that some may pass though.

In this DIY guide blog post, I will teach you how to detail the engine properly to my award-winning standards.

Here is a Genesis Coupe Engine bay that has been neglected for about two years:



The first thing you should do is to cover all water-sensitive areas. Most modern cars’ engine bays nowadays are weather sealed except for certain areas.

Some are:

Short Ram Intake Filter



Alternator



Battery



Water-sensitive areas completely covered



For the following step, I have seen many people create a mistake already. Here’s why:

Many people would soak the engine first prior to spraying it with a degreaser. The problem of soaking the engine with water first is that it reduces the effectiveness of the degreaser breaking down the dirt and grime because it gets diluted with the water.

For my standards, I spray liberally a full concentration (depending on the condition of the engine) all-purpose cleaner throughout the engine bay. Once that is complete, let the cleaner settle down for about 30 seconds to a minute but do not let the product dry.



After 30 seconds to a minute pass, rinse the engine using a very light water pressure. Using a powerwasher is NOT recommended as the high pressure can mess around with the hoses. This step is called the pre-soak and rinse.



After the pre-rinse is complete, spray the whole engine bay again with the cleaner.



Once that is complete, use various detailing brushes to agitate all dirt and grime throughout the engine bay.







When finished, rinse the engine bay again.



At this stage, inspect the engine bay to see that all dirt and grime has been removed. If not, repeat the same step above.

When the engine bay is clean to standards, you can air dry the engine bay as shown in the picture below and/or remove all plastics covering the water-sensitive areas, close the hood, start the car and idle for about 10 minutes. By doing it this way, you can use the heat generated by the engine to dry off the water.



After this is complete, open the hood again and use a microfiber towel to dry anything that was missed out. You can use this stage to use the cleaner to remove any missed spots and wipe off with a microfiber towel.



Last but not least, use a spray or aerosol plastic and rubber dressing to give the engine bay that “new look” again!





Before and After Comparison Again



Source: Do-It-Yourself (DIY) Guide - How to detail the engine bay to award-winning showroom condition ? Inception Auto Detailing | Award Winning Car Detailing in the Greater Toronto Area
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post #2 of 13 Old 10-11-2014
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Thank you for such a nicely written DIY! I will give this a try.
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post #3 of 13 Old 10-12-2014
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Looks good. Does anything specifically need to be done for cleaning the battery itself?
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post #4 of 13 Old 10-13-2014
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Nice write up. I just give my engine bay a good wipe down every time I wash the car (almost once a week). I would never let mine get that dirty to begin with.

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Quote:
Originally Posted by relyt92 View Post
Looks good. Does anything specifically need to be done for cleaning the battery itself?
For me, I just spray it with an all purpose cleaner and wipe it down. Once after that is done, I sprayed some white lithium grease on it to prevent corrosion on the terminals.
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post #6 of 13 Old 12-01-2014
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Nice job! most people forget about keeping the engine bay clean i think it should be done every time you give your car a thorough wash and clean
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post #7 of 13 Old 05-01-2016
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Can you send me a picture or name of the plastic and rubber dressing?

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post #8 of 13 Old 05-02-2016
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Been doing exactly this for years! Great write up. I found the best product for the final step is foaming tire cleaner... The spray on and leave type stuff you get on sale at Canadian Tire or whatever. I use my blower to even it all out after I spray it on too. But if the OP has found something even better I would like to know as well

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post #9 of 13 Old 06-12-2016
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Thank you for this DIY - I wasn't actually sure how to proceed with cleaning my engine and bay until I read this.

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post #10 of 13 Old 06-30-2016
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I clean under the hood every 10k at the spray wash. First soap then rinse. I try not to hit electrical with max pressure.
Never does my motor look as bad as ops period. Most any time you look under my hood it looks brand new.
Been doing this for 40 years, in the old days it was more important to stay away from electronics.

Might mention, it helps to start with a brand new car.
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Last edited by danbo; 06-30-2016 at 04:15 AM.
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post #11 of 13 Old 06-30-2016
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I was thinking of giving mine a sponge bath (more or less), but now I want to do this. Any recommendation for all-purpose-cleaner? I assume anything ammonia based?

I've used ArmorAll before as a rubber dressing and seemed to work nicely.
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post #12 of 13 Old 02-09-2019
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I know this is an old thread but, how did you get the alternator covered so well? I can't get the bag to cover it fully.

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post #13 of 13 Old 02-09-2019
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Get up in there with a cut down kitchen trash bag. Two other tricks

WD-40 spray down motor and sit over night before pressure rinse its better than soap.. ( Learned this from my first tuner for my super VT).
Dressing to be used on all rubber and plastic. Carbrite s purple solvent and silicone dressing. It revitalizes all plastics and rubber.

Here we go again !
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