Engine Bay Cleaning Tips and Precautions

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Honkytonk
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Engine Bay Cleaning Tips and Precautions

Post by Honkytonk » Wed Sep 04, 2019 7:28 am

I am thinking about giving the manky bay of my 8 a clean. Literally never bothered doing this before so I have no idea...

Other than covering the obvious like oil filler, dipstick, electrical boxes (a list of which ones to cover would be great so I don't miss them), what should/shouldn't I do when it comes to cleaning the engine bay?

Any product recommendations?

Any tips to make everything go better?

I'm intruigued to find out.
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Re: Engine Bay Cleaning Tips and Precautions

Post by MarkG M3CP » Wed Sep 04, 2019 7:31 am

Have a look at this video,, not a bad place to start.


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Re: Engine Bay Cleaning Tips and Precautions

Post by Honkytonk » Wed Sep 04, 2019 7:32 am

MarkG M3CP wrote:
Wed Sep 04, 2019 7:31 am
Have a look at this video,, not a bad place to start.

Ha, already have! I was hoping more for some 8-specific advice.
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Re: Engine Bay Cleaning Tips and Precautions

Post by MarkG M3CP » Wed Sep 04, 2019 7:38 am



Why does it need to be more specific? Just avoid connections and ‘dry clean’ as much as possible first.

This latter point was a surprise to me when I shred cleaning engine bays; picked up my daughter’s 2010 Mini around 18 months ago and thought I needed to steam clean it immediately.

Turns out that with a paintbrush, some micro fibre cloths and a vacuum cleaner I managed to do 90% of the work! Now it’s all about maintaining.

Are you thinking of removing the sound deafening? For me that the bit that’s always going to look a bit grim but I haven’t brought myself to pulling it out yet!
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Re: Engine Bay Cleaning Tips and Precautions

Post by qwakers » Wed Sep 04, 2019 8:07 am

i just snowfoam and pressure wash. never had a problem yet, just dont aim directly at sensative stuff!
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Re: Engine Bay Cleaning Tips and Precautions

Post by Honkytonk » Wed Sep 04, 2019 11:10 am

MarkG M3CP wrote:
Wed Sep 04, 2019 7:38 am
Image

Why does it need to be more specific? Just avoid connections and ‘dry clean’ as much as possible first.
Not being facetious, but why wouldn't it? Every car's different and has a different layout and nooks and crannies that collect dirt or water, so I'm asking what people's experiences are with the 8, and if there are any recommendations or tips associated they would have with that, what with the engine, plumbing, and packaging in the bay being different than your 'average' car.

On the plus side, that's good to hear. Plan I think is to give it a dry wash first, then crack out some degreaser to deal with the worst spots, rinse that all off with a hose after covering the electrics, and then dry and treat plastics and rubber.

If I'm not going to be soaking it (and plug the resultant hole fully), removing the airbox as if I was going to change the coils would probably be a sensible idea and allow greater access?
MarkG M3CP wrote:
Wed Sep 04, 2019 7:38 am
Are you thinking of removing the sound deafening? For me that the bit that’s always going to look a bit grim but I haven’t brought myself to pulling it out yet!
Hadn't even thought about that! Oh lord, that's added another layer of complexity!
qwakers wrote:
Wed Sep 04, 2019 8:07 am
i just snowfoam and pressure wash. never had a problem yet, just dont aim directly at sensative stuff!
You scare me :lol:

I know on one hand that engines are designed to be wet and dirty - they woudn't last long otherwise. But on the other I know how one minor electrical snag can completely ruin a car. I think if I stick to a hose with a light spray attachment and cover everything fully I won't get enough pressure up to damage connection or force water places it just doesn't belong.
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Re: Engine Bay Cleaning Tips and Precautions

Post by MarkG M3CP » Wed Sep 04, 2019 11:46 am

The idea of snow foam scares me too!

Given that the plugs are less of an issue on the RX I think the alternator will be the main concern.
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Re: Engine Bay Cleaning Tips and Precautions

Post by warpc0il » Wed Sep 04, 2019 2:26 pm

The areas that can suffer from water ingress include:
- power steering connection under airbox
- MAF connector
- coil connections, especially if you have D585s
- solenoid connections behind intake manifold
- fuel pump speed resistor, mounted beside secondary air pump.

That's all on top of the obvious, fuse box and PCM


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Re: Engine Bay Cleaning Tips and Precautions

Post by TheManc » Thu Sep 05, 2019 9:22 am

I've used the Magiures engine dressing with just normal gunk spray for degreasing in the past. et the engine warm and go over with the hose on shower,apply degreaser and use paintbrushes to scrub. Rinse off with hose and spray with the engine dressing and shut the bonnet come back 15 mins later and it looks great
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