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Thread: Engine bay cleaning!

  1. #1
    VIP-Member caravaner-tony's Avatar
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    Vehicle : Signum Elite 1.9cdti 150

    Trim : Elite

    Engine : ZDTH

    Year : 2007

    Mileage : 108000

    confused Engine bay cleaning!

    Can anybody help with what to use for cleaning the engine bay?

    Anything to watch out for, cover up, stop water entering?

    Also seen engine bays laquered! shiny.

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    Regular Member rushy's Avatar
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    Vehicle : SRi


    Engine : Z22SE (2.2 Petrol)

    Year : 2004

    Mileage : 137000

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    Cover up any electrics with cling film, spray APC dilute 10:1 over hole bay then agitated with a brush. Then just rinse off with a trickle of water or better wipe off with some cloths, then close the bonnet and start the car, this should help dry it.

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    Regular Member mark1319's Avatar
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    As Rushy said apart from I use Megs super degreaser10:1 and rinse with the PW on a low setting. The MAF sensor being the main one to cover I would say.

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    Regular Member steve1975l's Avatar
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    Make sure the engine is cold obviously and use tin foil to cover air intake/MAF. I haven't cleaned the Vauxhall yet as it was clean when I bought it. The cover should protect water going down by the spark plugs but if you were removing it I would protect this too.

    Either of the two suggestions above are good. I own both products and I would use Megs degreaser and you shouldn't need to go stronger then 10:1. Spray the engine bay and avoid wings and front bumper as it will strip the wax. Leave for 10-15mins the spray off with a normal hose with spray attachment on a wide setting. I wouldn't use a PW as even on a low setting it may cause ingress and force water where you don't want it to go but depends on the power of the PW. Get rid of the suds and grime then stop don't use too much water. If it needs another go I would use a brush this time.

    Remove the foil then start the engine for 2 mins. Turn off engine and dry with towels then you can treat all surfaces remember to do the shuts and bonnet catch.

  5. #5
    Regular Member nutron's Avatar
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    Vehicle : Vauxhall

    Trim : very

    Engine : Z19DTH

    Year : Nosey

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    It is not recommended to use a pressure washer, the AA get called out to people all the time who have used a PW on their engine. I use a de-greaser, hose and a steam cleaner on areas like the sump which have no seals that could be damaged. To be honest, a bit of oil/grease will protect the engine from the elements.

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    Regular Member mark1319's Avatar
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    It's ok to use a PW as long as you don't force the water into spark plugs, injectors etc. I've used it plenty of times on a low setting which is much the same as a hose on spray setting and yet to have a problem.

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    Regular Member m_r_shaw's Avatar
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    Just be careful tho! I wrecked my XR3i by using a jet wash at my local texaco. I stupidly left the engine running,
    (just incase I got water in the dizzy and it wouldn't start), and whilst washing the engine bay, it must have sucked some water into the cylinders..... next thing the car made a nasty 'tinny' pinging sound before eventually cutting out... tried to start it, no good.....cleaned all the electrics and wd40'd them,....no good. tried towing it, to get it going, but despite it tryingto fire up it was no good. Turns out, the water was sucked into the cylinders, and obveiously liquid can't be compressed, but pistons & valves can be snapped (hydrolic-ing, I think it's called?) The worst thing was, i was only cleaning it becauase someone had bought it off me on flebay, needless to say, I had to knock a ''COSIDERABLE'' chunk off the winning price! Not a happy bunny........Lesson learned

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    Forum Moderator FIL 4822's Avatar
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    Vehicle : Insignia VX-line RED Tourer

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    I would recomend using laquer either .
    Looks great at first but over time it begins to crack and dull and looks 5hit + it's really hard to remove it from all the nooks and crannies after.
    Take it from someone who's been there and done it in the past !
    Never again will i have any laquer whatsoever in any engine bay !

    Just do as the others have said, good degreaser and light swill.


    Have consideration for the deaf, if you're gunna fart, make it smell !


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