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Add-on · Under the bonnet

Engine bay cleaning

An engine bay clean takes the oily grime, road dirt and leaves out from under the bonnet safely. The electrical parts that do not like water, such as the fuse box, the alternator and the air intake, are covered first; the bay is degreased and cleaned with brushes and low-pressure water, never a jet blasted at the engine; it is dried with compressed air; and the plastics and rubber are dressed so they look new without a greasy shine. People book it for three reasons: to present a car well when selling it, to make a leak easier to trace because a clean engine shows fresh oil straight away, and because a clean bay is part of a car that has been looked after. It is done at the studio in Connah's Quay, for customers across Deeside, Chester and Wrexham. A clean engine is not a repair, and anything leaking goes to a garage.

An Audi engine bay before and after cleaning: dusty on the left, clean plastics on the right
Where
Studio in Connah's Quay, or at your home
Covering
Deeside, Chester, Wrexham, Ellesmere Port
Experience
Detailing since 2016, in Deeside since 2021
Coatings
G1 Ceramic Coating

Packages

What you can book

Add-on

Engine bay clean

For selling a car, spotting a leak, or simply a clean engine bay.

Please enquire: price after a look at the car

Done in the studio

  • Electrics and intakes covered
  • Low-pressure clean and degrease
  • Dried with air
  • Plastics dressed

All prices are from prices by vehicle size, confirmed once Nick has seen the car: every car is different. Mobile work: the first 10 miles are free, then 30p a mile.

How it is cleaned safely

  1. 01

    Cool engine

    The engine is cleaned cold, never hot, so products do not dry on and nothing is shocked by cold water.

  2. 02

    Cover

    The fuse box, the alternator, the air intake and any exposed connectors are covered.

  3. 03

    Degrease and agitate

    A degreaser suited to engine bays is applied and worked in with soft brushes.

  4. 04

    Rinse gently

    Low-pressure water, not a pressure jet into the electrics.

  5. 05

    Dry and dress

    Compressed air and towels, then a water-based dressing on plastics and hoses.

When an engine clean is useful

  • Selling: buyers open the bonnet, and a clean bay says the car has been cared for
  • Finding a leak: on a clean engine, fresh oil or coolant shows straight away
  • After a long winter: salt and grime build up around the bay
  • As part of a full detail, so the car is clean where it is not usually seen
A blue BMW engine bay before and after cleaning: dusty on the left, clean on the right
BMW engine bay, before and after

When it is not a good idea

Some older cars have exposed electrics or poor seals under the bonnet, and some modern engines have components that should stay dry. Those are wiped and hand-cleaned only, and you will be told if your car falls into that group before anything is sprayed.

Reviews

What customers say

“I've been using Nick Auto Detailing's services for years, and I couldn't be happier. So far, I've had more than 20 cars detailed by them, including both my own vehicles and cars belonging to my clients.…”
Ionut FortRepeat customerEdited 2 months ago (read 23 Sep 2026) · Google, read in full
“I recently had my car detailed and I couldn't be happier with the results. Nick did an amazing job…”
Paul B.5 months ago (read 23 Sep 2026) · Google, read in full
“Excellent service and outstanding attention to detail! My car looks brand new after being serviced by Nick Auto Detailing.…”
Darius Voinea3 months ago (read 23 Sep 2026) · Google, read in full
“Highly recommended, brilliant job on my car today! Full valet inside and out.. looks brand new again. A big thank you!”
Katherine JonesFacebook recommendation (read 23 Sep 2026) · Facebook
“Absolutely amazing service and value for money.”
Google reviewerfrom Google's review summary · Google
“High-quality products, fast work, and a very professional attitude.”
Google reviewerfrom Google's review summary · Google
“Very fast and very good quality of wrapping and car detailing.”
Google reviewerfrom Google's review summary · Google

Questions

Engine bay cleaning: straight answers

Is it safe to clean an engine bay?

Yes, when it is done cold, with the sensitive parts covered, with low-pressure water and properly dried. Most of the problems come from pressure-washing a hot engine.

Does engine bay cleaning help sell a car?

It helps presentation. Buyers look under the bonnet, and a clean bay suggests a cared-for car. It will not hide a leak, and it should not.

Can you clean the engine bay at my house?

Usually, yes, if there is room to work and somewhere for the water to go. Some jobs are better done at the studio.

Next step

Get a quote, or send Nick a photo

Tell Nick the car and what is bothering you. A couple of photos on WhatsApp is the quickest way to an honest price, or use the quote form. You pay on the day, when the work is done.

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