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BMW 3-Series (E90 E92) Forum > BMW E90/E92/E93 3-series General Forums > Regional Forums > UK > UK Technical Forum > Cleaning the engine bay



View Poll Results: How do you like your engine bay ???
Virginally squeaky clean for me please 13 86.67%
I like it dirty - I'm all down for the filth 2 13.33%
Voters: 15. You may not vote on this poll

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      08-19-2009, 09:35 AM   #1
- Paul -
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Cleaning the engine bay

I want to clean the engine bay prior to selling. Whats the easiest way to do it?

I'm guessing that power washers aren't a good idea
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      08-19-2009, 10:48 AM   #2
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I used the jet wash but held it not that close.

Give the whole area a general spray.
Spray the entire area with Autoglym Engine Cleaner
Agitate with a paint brush
Wash off with jet wash

Repeat if necessary.

Did mine and the girlfriends and they both looked amazing after, both cars started first time.

Get yourself off to Halfords.
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      08-19-2009, 11:52 AM   #3
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Cheers - I read somewhere else just to use WD40 and a rag? - It is quite mucky under there though.
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      08-19-2009, 12:56 PM   #4
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Say you were to clean it, how long would it be til it all gets dirty again. Is it really worthwhile...there is not much else apart from the engine cover (metal) that you can honestly shine up.

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      08-19-2009, 01:00 PM   #5
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Quote:
Originally Posted by lightweight View Post
Say you were to clean it, how long would it be til it all gets dirty again. Is it really worthwhile...there is not much else apart from the engine cover (metal) that you can honestly shine up.

Its all the plastic and stuff in there - helps when selling a car
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      08-19-2009, 01:03 PM   #6
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Quote:
Originally Posted by lightweight View Post
Say you were to clean it, how long would it be til it all gets dirty again. Is it really worthwhile...there is not much else apart from the engine cover (metal) that you can honestly shine up.

So that's why you smell then?
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      08-19-2009, 02:18 PM   #7
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Spray some TFR or AG engine cleaner and agitate with a crap sponge. Rinse off with a hose pipe. Pop your thumb over the end if a bit more power needed. If its really crap in there do it several times. Dry off with crap chamois and a gentle warm through of the engine. Get some Aerospace 303 and spray over the engine bay. Buff up with a microfibre cloth. I do this once a month after 4,000 miles and it keeps the engine bay tip top. Aerospace 303 doesn't allow the crap to stick and keeps an as new look to the bay
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      08-19-2009, 03:05 PM   #8
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Cheers JLR and Carrera - will pickup some AG stuff and have a go next week.
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      08-19-2009, 05:56 PM   #9
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DONT use WD40
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      08-19-2009, 09:06 PM   #10
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Quote:
Originally Posted by willhollin View Post
So that's why you smell then?
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      08-20-2009, 04:27 AM   #11
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carrerarsr is spot on

If you have never washed your engine bay, the difference - even when not done anally, is night and day and if you are selling privately, it gives a buyer the impression that the car has been well looked after.

Wash the underside of the bonnet and inside wing tops and clean as much of the painted surfaces as you can - it all helps.
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      08-20-2009, 06:05 AM   #12
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Where did you get your aerospace 303 from?
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      08-20-2009, 06:37 AM   #13
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Quote:
Originally Posted by MO_1 View Post
Where did you get your aerospace 303 from?
Googled detailing suppliers

Last lot came from ebay
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      08-20-2009, 08:29 AM   #14
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I got mine from these guys - a little safer than E-Bay.
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      08-20-2009, 10:11 AM   #15
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Quote:
Originally Posted by AlanQS View Post
carrerarsr is spot on

If you have never washed your engine bay, the difference - even when not done anally, is night and day and if you are selling privately, it gives a buyer the impression that the car has been well looked after.

Wash the underside of the bonnet and inside wing tops and clean as much of the painted surfaces as you can - it all helps.
To some though, a very clean engine bay is a turn away, can be hiding oil leaks and the like, which is one possible reason the owner cleaned it...
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      08-20-2009, 10:16 AM   #16
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I like mine dirty.
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      08-20-2009, 10:28 AM   #17
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The filthier the better
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      08-20-2009, 01:04 PM   #18
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Quote:
Originally Posted by dxb335d View Post
To some though, a very clean engine bay is a turn away, can be hiding oil leaks and the like, which is one possible reason the owner cleaned it...
I agree with you Carlos, I'd rather see a 'grimy' engine bay on a used car than a nice shiny one - what are they covering up??
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      08-20-2009, 01:14 PM   #19
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i like to be able to write my name in the dirt
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      08-20-2009, 02:20 PM   #20
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This needs a poll!!

Do you like to see a dirty engine bay on a 2nd hand car

YES
NO

Mods??
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      08-20-2009, 02:38 PM   #21
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I like to eat my lunch on a clean engine

Ah shit.....that will leave greasy residue

When buying a second hand car I believe that a clean engine bay on a shite car is like polishing a turd. The car will still be shite. If you can't see through a bit of spit and polish then you deserve the turd. A cared for, clean and tidy car will still stand out from a unloved, covered in grime and oil one in my book.
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      08-20-2009, 03:43 PM   #22
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Why spend hours making the car look amazing and then leave the engine in a shit state.....
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