How to Clean Your Engine Bay: A Comprehensive Guide
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Introduction
Cleaning your engine bay can seem like a daunting task, especially if you've never attempted it before. All those intricate components, mechanical parts, and electronics can make it feel intimidating. However, with the right precautions and techniques, cleaning your engine bay is quite simple and safe. With over 25 years of car detailing experience, I’ve detailed hundreds of engine bays without a single issue. In this guide, I’ll share my top tips, the products I recommend, and provide a step-by-step process for a thorough and effective clean. So, roll up those sleeves, and let’s dive into the art of engine bay detailing!
Precautions Before You Start
Protect Yourself
- Wear Nitrile Gloves: Always protect your hands while dealing with chemicals.
- Use Safety Gear: Consider wearing eye protection and old clothes that you don’t mind getting dirty.
Choose the Right Environment
- Ventilated Space: Work in a well-ventilated area to minimize inhalation of fumes.
- Cool Engine: Ensure the engine is cool to the touch before starting. If you’ve recently driven, let it rest for a few hours.
Electronics and Sensitive Components
- Cover Exposed Areas: If your engine bay has sensitive electronics like the alternator, cover it with a plastic bag. Most modern vehicles have watertight components, but it's better to be safe.
- Battery Disconnection: Though not usually necessary, disconnecting the battery can provide extra peace of mind for older vehicles.
Tools and Products Needed
Essential Cleaning Supplies
- Degreaser: I recommend using a product like Kochemi GS, which is effective and safe for engine bays. Dilute it as instructed on the label.
- Active Foam: Kochemi’s Active Foam is great for a deeper clean once the degreaser has been applied.
- Brushes: A variety of brushes including long-handled types for hard-to-reach areas and flag tip brushes for delicate components.
- Pressure Washer or Hose: A pressure washer set to around 1000 PSI is ideal, but a garden hose will also suffice.
- Car Dryer: To dry the engine bay post-cleaning, either use a car dryer or compressed air.
- Dressings and Protectants: Products like Motor Plast and McGuire’s Hyper Dressing to enhance and protect the plastics and rubber under the hood.
Step-by-Step Process for Cleaning Your Engine Bay
1. Remove Loose Dirt and Debris
Start by using compressed air, a leaf blower, or a vacuum to remove loose dirt and debris from the engine bay. This will make the rest of the cleaning process much easier.
2. Rinse the Engine Bay
Using your pressure washer or hose, gently rinse the entire engine bay, keeping the wand moving to avoid focusing on one area for too long. This initial rinse removes the majority of loose grime.
3. Apply Degreaser
Generously spray your diluted degreaser over all surfaces of the engine bay. Let it dwell for a few minutes to loosen grime and dirt. While it dwells, gently wipe any sensitive components.
4. Scrub with Brushes
Use your assortment of brushes to scrub different areas of the engine bay. Pay special attention to tight spots and areas that typically accumulate grime.
Pro Tip:
- Switch between different brushes for various surfaces; hard, soft, longer bristles, etc. This maximizes cleaning efficiency, ensuring every nook and cranny gets attention.
5. Apply Active Foam
Use a foam cannon or pump sprayer to apply the active foam. The foam allows for longer dwell time and better cleaning in hard-to-reach areas.
6. Rinse Again
After scrubbing, rinse off all the foam and cleaner using your pressure washer or hose. Make sure to rinse thoroughly to avoid any chemical residue.
7. Dry the Engine Bay
Use your car dryer or leaf blower to remove excess water from the engine bay. This is crucial to prevent any leftover water from causing corrosion in electrical components.
8. Apply Dressing and Protectant
Once the engine bay is dry, apply your chosen dressings liberally. Products like Motor Plast can go on wet or dry surfaces. Allow it to self-level by closing the hood and letting it settle for a few hours. This makes everything shiny and protects the surfaces.
Final Touches and Maintenance
1. Regular Maintenance
- Frequency: Clean your engine bay 1-2 times a year. Regular cleaning prevents buildup and makes each cleaning session easier.
- After-Car Wash Routine: Always clean the engine bay as part of your overall car washing routine to keep it in the best condition.
2. Visit a Mechanic
With a clean engine bay, your mechanic will have a much easier time diagnosing issues, making them grateful for your effort.
Conclusion
Cleaning your engine bay does not need to be an intimidating task. With the right tools, products, and techniques, it can be a straightforward process that yields impressive results. Regular cleaning not only improves the appearance of your car but also contributes to its maintenance. Use the precautions and steps outlined in this article to conquer the engine bay cleaning puzzle. Remember, practice makes perfect, and over time, you’ll become more efficient and enjoy this refreshing experience even more.
Don’t forget to share your engine cleaning stories and tips in the comments below!
For more car care tips, check out my channel where I provide extensive guides on car detailing and maintenance!
Hey what's up guys!? Welcome to another episode of Pan The Organizer! Today, I'm going to show you how to clean your engine bay! Now, if you've never done this before, it can seem quite intimidating right? A lot of components, some mechanical bits and pieces,
electronics, but if you use some common sense and some precautions it's actually quite simple and safe to do. I've been detailing cars for over 25 years now and through those years I've detailed hundreds and hundreds of engine bays and never once did I have an issue, because I'll be
sharing with you all the tips and tricks on how to do this properly. I'm also going to be showing you what kind of products equipment and tools I used to do the job, and by the way, I'll link those in the description under the video for you guys to check them out, so all you have to do is sit back
relax and enjoy the show! And also you're going to have a first person view or perspective of how I do this I'm going to be strapping this GoPro to my head so you'll be able to follow along for the journey. So without further ado, stay tuned, let's go ahead, and start the show!
[Music] Guys, let's jump right into this engine bay detail. First order of business, always wear some nitrile gloves when you're detailing to protect your hands from the chemicals and any other personal protection equipment that you might need. Work either in a ventilated space,
if you're working outside that's fine just don't work in direct sunlight. Also make sure that the engine bay is cool to the touch so if you just drove the vehicle let it rest for a few hours you don't want to be using any chemicals or cold water on a hot engine block because you don't
want anything to be expanding or contracting and potentially run into any issues. talking about issues your don't be worried you're going to hear a lot of things and people trying to scare you right the majority of vehicles in the last decade to the last 15 years have a lot of watertight
components so you can use water just don't focus a high pressured stream on one given area for a big amount of time and you'll be safe so for example my pressure washer I set it to roughly 1000 PSI to wash cars which is roughly 69 bars if you're in Europe and that's more than enough and keep the
water flowing you can use a regular garden hose if you want as well as far as the sensitivity of different electronic bits and pieces well there is the alternator that you might want to cover with a plastic baggie if you feel that it's exposed like this one but the majority of the vehicles today
have a lot of plastic cladding underneath the the hood so you don't need to take too much precaution the battery terminals are usually protected you can disconnect the battery if you're really scared I won't do that today I've done a hundreds and hundreds of detailing jobs for engine Bays
so I'm not worried about that any other older vehicles if you have any sensitive Electronics like distributors or any exposed Electronics perhaps an old ECU unit that's super exposed or some fuse boxes that might be wonky wanky or that kind of stuff you might want to protect as well
so let's grab a plastic baggie and we're going to cover the alternator and that's pretty much all that's needed this is a 2021 Nissan Rogue that my girlfriend purchased brand new last year so the engine bay isn't that dirty uh but what I recommend is that you guys clean it and
of course if you clean the engine bay often once or twice a year you should be fine with regular maintenance so all we see here is a bit of dust right accumulation you have these leaves dirt and debris before I show you what we have for detailing tools products and equipment what we
need to do is first start by blowing off with either compressed air or a leaf blower or maybe if you have a vacuum you're going to vacuum up all this dirt and debris that might be around the vehicle so all the loose stuff so for me I'm going to grab my car dryer which is a blower basically
[Music] so that we removed or knocked off any loose dirt and debris I'm going to show you the simple uh chemicals the equipment the tools and the products that we're going to be using today so first of all
we're going to need a Degreaser so what I like is koshemi GS this is a pH 12 and a half so an alkaline cleaner basically an all-purpose cleaner and they're a green star for use in the engine bay they recommend to dilute one to five or one to ten so one part of product for five parts of
water or one part of product to 10 parts of water in a spray bottle so what I did here I have this carpo dilute spray bottle I diluted koshemi green star five to one so five parts of water to one part of product in a spray bottle I'm gonna have also this kochemy this is their act the foam this
has a pH of nine and a half you're going to see why I'm going to use this we're going to first start by spraying the Degreaser we're going to let that dwell and to prolong the dwell time and to get further into the nooks and crannies and all the crevices and hidden Parts we're
going to use this active foam diluted one part of product to 10 parts of water in this foam Cannon and then a few brushes that we're going to need so some flag tip brushes here we also have these work stuff brushes so different sizes different tips different configurations this longer one
here that we're going to use for the hood as well and any intricate areas where you need where you need to dig deeper inside you can use these kind of easy detail brushes as well if you don't have a foam Cannon by the way you can use a foaming pump sprayer like this axle series
foamer from Miralax this is a very good one I have a review of the amerilx pump sprayers on my channel if you want to check those out and at the end we're going to rejuvenate and protect all the plastic bits and pieces the vinyl the rubber that's underneath the hood with a selection here
I have four different products so the first one motor plast this is an engine conserver so you can put this on a wet surface or a dry surface once you cleaned it same thing goes for McGuire's hyper dressing I diluted this four to one for a natural finish but you can have high
gloss medium gloss satin or natural water-based products so it won't crack or fade any of the rubber components or Plastics under the engine bay there is one in aerosol form Chemical Guys black on black so you spray and you shine and same thing for the stoner trim shine to restore
all that color and shine like an oem appearance and a few microfiber towels that's pretty much it it's super simple so now what we're going to do we're going to take the pressure washer we're going to start with the hood so always work from top to bottom right you don't want to have your
clean parts and then finish with the hood and have all that dirt and junk dripping back onto your clean surface and we're going to rinse with the pressure washer so here I'm using my crenzla 1122 TST pressure washer and I set it to roughly a thousand PSI for washing cards which is more
than enough just make sure you keep your wand moving don't Focus the jet too hard definitely don't use any high powered gas pressure washers that throw out three thousand or four thousand PSI in the engine bay you don't want to do that that so we're going to work from top to bottom
first knock off a bit of that loose dirt and debris as well with the water and by the way under the hood you can have some things like this these are Shields sometimes for heat rejection other times they're used for noise insulation so I wouldn't touch this if it's dirty just put
a bit of APC on a microfiber towel and you can gently wipe that off but other than that try and leave these parts alone because you don't want to crack them or have too much liquid and then have them sag and potentially be removed so just clean them manually if anything so we're going to
work around that now with the pressure washer and just knock off any loose dirt and debris as well foreign guys as you saw you keep the wand moving and no worries for the electronic bits and pieces other
than the stuff if you really really are scared for a bit of the more sensitive stuff like the alternator you can cover that with a plastic baggie uh but yeah that's pretty much it also notice that we start with the engine bay when we fully detail a vehicle because we're gonna have
a lot of things splattering all over the place so when we're done with the engine bay that's when you're going to wash the rest of your vehicle right so let's take our all-purpose cleaner that we diluted in our spray bottle were generously gonna spray this so what this is going
to do it's going to start lifting and dissolving all that dirt and grime so be generous with this and at these dilutions These are products that are super safe to use so like I said we start with the top portion but while you're at it soak the rest of the engine bay as well
so here we go so again this is going to start to break down all that dirt debris the grime the gunk the grease as well uh if you prefer using a Degreaser if you have like a dirtier engine you can go ahead and use that so having a dedicated degreaser is also appropriate for
here but usually an all-purpose cleaner as the name States it cleans all types of surfaces so we're going to let that dwell while we tackle the underneath portion of the hood here we have a bunch of different brushes I like to use this long brush here long handle brush which is good
for the fender Wells as well so in this bucket here I have a bit of McKees 37 rinseless wash there we go just to have a bit of lubrication on the brush and we go ahead and we scrub so if I wasn't talking and was to do this engine bay detail in one go with the experience when you
get used to it in 15 minutes tops I'm done so it's not something that is going to take you hours and hours and of course practice makes perfect so the more you're going to do this the more you're going to enjoy it and you're also going to see that it's quite safe when you're using the precautions again
some common sense there is no real fear to be had no worries guys we're gonna rinse that out I'm gonna take the foam Cannon and again inside here I have a one to ten dilution of the koshemi active foam so this is a pH of nine and a half so it's not pH neutral it has
a bit more cleaning power so it's kind of this they mixed their pH neutral GSF or gentle snow foam with a bit of that green star integrated so an all-purpose cleaner put that in and made this foam so what this is going to allow is that Degreaser that we sprayed on there or the
all-purpose cleaner we're gonna have a longer dwell time with the foam and also reach all the deeper nooks and crannies the intricate areas so on and so forth so let's go ahead foreign
is beautifully covered so now we have a longer dwell time it's dissolving and encapsulating all that dirt debris Grime grease all that stuff so to help that now we're going to do some mechanical agitation we have a selection of brushes here that we're going to use
and this is the fun part now if you've never detailed an engine bay before you're going to see just how much satisfaction you get from doing this guys you can see all that dirt just melting away just dissolving and knowing that every single part of the vehicle right not
just the interior and the exterior but also the engine bay compartment is clean there's something so satisfying about that so use a few different brushes so I have different sizes and different types to reach all sorts of parts now we're not aiming for a museum
type or Concourse level restoration here all we want is to have clean engine bay your mechanic is going to thank you by the way because you'll have clean surfaces to work with there you go again work on a clean and cool surface I should say not clean but cool that
way you're not going to run into any issues by working on a hot engine bay so always wait for the thing to cool up all right so this was one of the bigger brushes now you can take one of the more intricate ones to get into the little areas right and to make sure
we reach everything hopefully everything is fine with the resolution of course the GoPro doesn't have the same capabilities as my bigger Sony a7s Mark III but hopefully you can see everything well hopefully you can hear the audio quite crisply
so you just go about it you're going to feel like an artist by doing this because you're working on everything with different brushes right to reach all the nooks all the crannies so always have a different assortment of different types of brushes and they're always going to be valuable regardless
of what detailing needs you have because you can use some for the interior for the exterior and you're seeing this in real time by the way so you can tell you don't have to be super super gentle again I know there's a lot of videos out there a lot of people like to stress people by
saying ah it's so complicated to do an engine bay don't do it you're going to break everything well again I detailed hundreds and hundreds of engine Bays through the years never had a single issue why because I use common sense and the tips and tricks that you're hearing
in this video of course use some precaution on older vehicles right anything that's older than 10 or 15 years might not be as water typed as modern cars today because the majority of the car makers they really go through extensive testing and extensive links to make sure that
their engine bays are watertight now you can grab these wheel brushes that have these fibers that can go deeper inside areas like here behind the radiator that you don't necessarily have access to with other brushes so this is what I like from having a different selection it allows you to get
deeper into the nooks and crannies like here for example and you get in between stuff and you just have a blast always guys if you watch my videos for those of you who've been watching for a longer time perhaps you know that one of my goals is to inspire my viewers to go
out there and enjoy detailing their cars and this should be a fun experience for everyone and by making things funner like this well guess what you're going to be more inclined to take care of your vehicle more often
so there we go by the way for you professional detailers out there when you're doing an engine bay make sure to have your customers sign a contract that you're not liable for any damage because you don't know what condition the engine
bay is in right if there's any cracked air boxes or cracked hoses or leaking stuff that is up to the customer to know the service the reliability what's the state of the components and the state of their vehicle alright so let's go ahead and rinse all this down
foreign we're happy with that and by the way guys when you're using a pressure washer believe it or not you're using less water than your traditional garden hose so you're more efficient at what
you're doing now you could leave the engine bay wet just like it is and spray on one of these two dressings because they can go on wet surfaces so for example mortar plast you would spray it all over you'd close the uh engine cover or the hood cover and just let it go
for a few hours until it dries off itself levels and you're going to have that awesome finish the same applies for the McGuire's hyper dressing so while it's still wet you're going to spray and be very generous with it spray all the components close the hood Let It Go for a few hours until
it fully dries and then again you're going to have a nice surface everything's going to be protected and have that nice OEM appearance you can use a microfiber towel to blot any excess but what I like to do for a safety precaution is is we're going to blow dry the engine bay
compartment so you can have a full-blown car dryer like I do or you can use something like this depending on your budget this is a smaller metrovac air force Blaster sidekick so it shoots a filtered hot dry air so that way you can dry the engine bay and not have any issues but I'm
going to use the big boy here this big boy blower R Pro always use protective gear for your ears questions so already guys we can tell just how beautiful this looks it's like 95 dry whatever is left
we're gonna leave there because we're going to be applying the dressing and by the way if you don't have a car dryer or a leaf blower you can use compressed air if you have an air compressor or you can towel dry it with microfiber towels always use of course your secondary towels not
the cleanest ones use ones that perhaps are used or ready to go in the garbage keep those for engine bay detailing so you can mop up the excess water or if you're outside leave it dry in the sunlight and let the water naturally evaporate so what I like to do we have a selection
once again of four types of dressings I really really like the water-based ones because they're not going to promote any cracking or fading of the rubber or Plastics because they don't contain any solvents in them but they all work super well so for example if you take this one here go
motor plast so if you read in the back they say that it's a water displacing engine conserver treated Parts regain their new appearance which is what we want the power units are protected from corrosion and environmental factors by permanently elastic protective film and it's
temperature resistant to 250 degrees Celsius so perfect for use in engine Bays obviously so shake your chemicals and you're going to spray this so you can spray on a wet or dry surface if you spray it on wet it's going to self level but you need a few hours for it to fully dry
so at this point you can close the hood and just let it continue drying on its own what we're going to do is spray this liberally as you can see we're going to let it dry I'm going to close the hood to clean the rest of the vehicle off come back later and just mop up with a microfiber towel so that
way we don't have any unwanted high spots or any streaking but we're going to have this brand new appearance we're going to protect everything a lot of these by the way also have UV protection in them so you can always read the instructions and the label but they're going to help prevent
fading and cracking but more importantly they're going to give that super nice detailed appearance to your engine bay and at this point you can also remove any plastic baggies that you had to cover the alternator perhaps if you wanted to cover your coil packs on top of the engine bay if you
disconnected your battery you can go ahead and reconnect that once everything is fully dry and any other sensitive components that you guys might want to cover use plastic baggies cover those if it makes you feel better as well but again on newer Vehicles 10 to 15 years as you
saw it's pretty simple everything is pretty much watertight and well sealed just use common sense keep moving with your water don't stay focused on the same area for minutes on end that's when you run into issues and don't use too high pressure so nothing over 2000 PSI anything between a thousand
to two thousand PSI to wash cars is what we're aiming for or just your regular garden hose if you want and if you really wanted to you can use the touchless watch appearance by using something like a waterless wash that you would spray without any water then use a few brushes mop up with a
microfiber towel obviously you won't achieve this same level of cleanliness and you'll be working a lot harder this is the simple and easy way and efficient way to do it and you're going to come back at the end we're going to watch the end results together and see how awesome this looks
so now I'm going to wash the rest of the vehicle and get back to this who guys just look at this end result how awesome is that so we restored it to this better than you appearance because it's not only clean now but we also dressed it everything is more accessible you're not going
to dirty yourself when you're uh having to do some stuff in the engine bay of course your car mechanic will thank you so the hood everything is nice and tidy it's now dry to the touch we used a simple towel to buff off any residual dressing that was there but uh yeah man what do you guys
think drop a comment in the comment section under the video If there are some things as well that you do differently let me know drop a comment and now let's go ahead and see those Final Shots so guys let's see this radical transformation so the before shots where you can see that the engine bay
was quite dirty it wasn't the dirtiest engine bay ever but it still had some dirt some Grime some dust and it didn't quite look as good as it was when we first bought the vehicle brand new and in the after shots hopefully you can see the striking difference everything is clean everything
has been enhanced and protected as well it looks absolutely amazing and it looks brand new now and you can do this as well in the comfort of your own home either once or twice a year is what I'd recommend of course once again make sure to follow all the precautions that were given to you and the
tips and tricks in this video use some common sense and you'll be fine and also I remind you all the tools equipment and products that I used in this video I'll link those in the description under the video for you guys to check them out if you enjoy this kind of a video well know that
I have over 800 videos on my channel this is one of the biggest car detailing channels on YouTube thanks to you guys my viewers and subscribers so thanks for being there thanks for watching and in the meantime don't forget keep it tight keep it clean and I'll see you on the next one