How To Pressure Wash Your Cars Engine Bay

Video How To Pressure Wash Your Cars Engine Bay

In relation to utilizing a strain washer to scrub your automobile’s engine and engine bay space, there’s a proper and flawed method to do the job:

  • The flawed approach entails a strong gasoline strain washer, 0-degree blast nozzle tip hooked up and a 3,000 PSI water jet stream wrecking havoc in your engine parts.
  • The suitable approach entails any gasoline or electrical strain washer, a 40-degree spraying nozzle tip hooked up, lance held 3 ft from the engine, and a protected water spray 2x backyard hose strain effectively cleansing the engine.

Stress washing your automobile engine will be protected, for positive, however do you have to even hassle?

Regardless how typically you open the hood to test the degrees or have a look at your automobile engine, it’s important to admit it appears rattling good clear.

Have a look:

Before and after pressure washing an engine

Okay, so strain washing the engine will be protected.

And a clear engine appears nice…

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What does the automobile working handbook say?

Whereas researching this how-to information I learn by way of 11 completely different automobile manuals. 4 talked about nothing about cleansing the engine and 7 had a tiny part saying in case you lived in a snowy space with salted roads it’s possible you’ll need to clear the engine with non-corrosive chemical at finish of season.

So there are conditions the place strain washing a automobile engine and bay space is about making it perform higher and last more in comparison with simply making it look higher.

Right here’s the whole lot you must know to get your engine bay clear with out damaging something.

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Engine Parts to Shield

Electrical enclosures have an IP Code to categorise how protected they’re towards water and mud.

The strain washer sitting subsequent to me is an electrical AR Blue Clear with blue plastic enclosure. It says it has IPX5 score. The ‘X’ says it isn’t rated for mud safety (as its not important to perform) and the ‘5’ says it’s protected towards water jets. Different IP rankings almost about water are:

  • IP1 – Dripping water safety
  • IP3 – Spraying water
  • IP4 – Splashing
  • IP5 – Water jets
  • IP6 – Highly effective water jet
  • IP7 – Water immersion

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In case you can, test the IP score of electrical enclosures in your automobile engine space. In case you can’t then simply assume they’re lower than IP5 and canopy them with plastic luggage.

Issues to cowl with plastic luggage:

Pressure wash engine things to cover

And different electrics like automobile alarm system.

Finest Chemical compounds to Pace Up the Job

There are two conditions it’s possible you’ll encounter, every would require a unique chemical cleansing options

Very greasy and oil stained engine

Simple green engine degreaser concentrate

This example would require a degreaser.

In case you purchase the Easy Inexperienced focus pictured proper you may dilute it with water to create an answer of various efficiency.

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It’s biodegradable and protected to make use of simply you’ll want to comply with the directions to get the most effective efficiency combine for the job.

  • Test it out on Amazon right here…
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Dusty however not too greasy or oily

Simple green general purpose car engine cleaner

For this case you should use a common goal all-in-one kind cleaner.

Easy Inexperienced makes an amazing product designed to be a common goal answer sturdy sufficient to your automobile engine and in addition good for the bumpers and wheels.

  • See it on Amazon right here…

Finest Stress Washer to Use

Any of our 7 greatest strain washers suggestion will do the job quick-smart. A heavy-duty or light-duty machine can be utilized.

A heavy-duty, actually?

Sure… The drive of water stream is dictated by the nozzle you employ and the way far you maintain the water spray from the floor. Use a 40-degree nozzle and maintain it 3 or 4 ft from the engine and the engine feels much less drive than out of your backyard hose.

Watch this 3 minute 37 second video to discover ways to clear your automobile’s engine and engine bay safely:

5 Steps for Stress Washing a Automotive Engine Bay With out Inflicting Injury

1.) Collect the whole lot you want earlier than beginning

  • Plastic luggage and tape to guard electrics
  • Protected non-corrosive chemical cleaner to make stains, filth and dirt come off simple when strain washing
  • Small scrub brush (toothbrush works) to get the cleaner into all of the nooks and crannies
  • Stress washer with right nozzle (white or inexperienced tip)
  • Shammy or different drying towel
  • Vinyl care product

2.) Take precautions

  • Be sure engine isn’t sizzling. Ideally, you need it heat however not sizzling. Wait quarter-hour in case you have simply pushed to the world the place you may be strain cleansing
  • Cowl alarm programs, distributor, alternator and different electrical connections with plastic luggage and tape them on in order that they aren’t blown away when strain washing
  • Learn chemical cleaner label to make sure it’s non-corrosive, biodegradable and water primarily based in order to not harm the engine plastics and so on.
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3.) Apply cleansing product

  • Spray cleansing product liberally to all areas of the engine making effort to get it into the powerful areas
  • Depart the cleansing to work for a minute or two
  • Use scrub brush to get the cleansing product into awkward locations and to knock unfastened the powerful filth and stains
  • Repeat above steps for cussed areas

4.) Stress wash clear

  • Use right nozzle – the 25-degree “lifting” inexperienced tip or 40-degree “spraying” white tip will likely be good for the job
  • Stand again and hold spray nozzle 3 – 4 ft above the engine to maintain the strain engine feels low, transfer nearer in case you decide the spray isn’t forceful sufficient

5.) Dry, take away plastic luggage and apply safety product

  • Use shammy or drying towel to completely dry the engine
  • Take away plastic luggage from electrics
  • Depart it to air dry for half-hour
  • Apply vinyl care product or different long run corrosion safety product
  • Take some images to your mates to see


  1. Issues to cowl with plastic bag picture above is from article additionally on strain washing automobile engine.

Please see more summary list Best engine degreaser for pressure washer ranked by customer satisfaction.


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