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Thread: Petrol and EGR valve cleaning - Dangerous?

  
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    Petrol and EGR valve cleaning - Dangerous?

    What is the best method of cleaning the EGR valve? i.e, the best way to get the crud off it?

    I have heard people say there are 2 stages (after removal):

    1. Give it a good scrub with Carb Cleaner and a toothbrush to get the main dirt off, then
    2. Soak it in petrol to get the hard to reach and more stubborn soot off.


    I want to clean mine soonish, with the minimum spent and minimum fuss.
    Is the above method the best for this?

    Being a novice I am naturally wary of handling petrol as it's flammable.
    After the EGR has been soaked in the petrol do you have to make sure it is bone dry before refitting it to the engine?
    Any other hazards to be aware of?

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    Looking at the car you drive i would say it is a hassle to clean that thing, much easier to just disconnect and you wont notice a difference imo. Just disconnect and plug the vacuum hose, have done it on mine and i know alot of other people have.

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    Quote Originally Posted by jiberson View Post
    Looking at the car you drive i would say it is a hassle to clean that thing, much easier to just disconnect and you wont notice a difference imo. Just disconnect and plug the vacuum hose, have done it on mine and i know alot of other people have.
    You say it's a hassle but people on here have said it's quite easy. I haven't done it yet; I'm just saying what others say.

    If the EGR can be isolated by disconnecting it, why do they put them on our cars in the first place?

    Thanks.

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    Well on the Y17dt involves stripping down the intake from the intercool to the inlet manifold and also down from the MAF to the intercooler, removing the ECU aswell.

    The EGR is originally installed to reduce emissions to meet standards required for EU. They do improve efficiency whilst they are running perfectly and brand new but after 2000 miles or so they clog up and do more bad than good.

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    If I blanked the EGR off would it fail the MOT emissions test?
    Is it legal to blank it off?


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    No, there's nothing wrong with soaking it in petrol. Carb cleaner is just as flammable as petrol. It will help to clean it. I also used degreaser and let it sit for ages before dunking it in bath of carb cleaner for 20-30 minutes.

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    Quote Originally Posted by Billy Dean View Post
    If I blanked the EGR off would it fail the MOT emissions test?
    Is it legal to blank it off?

    Not at all, the emissions tests do not test for this and no it is not illegal.

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    jiberson, I was about to clean mine, but am now wondering if there's any point if it's going to have to do this after every 2k miles... I didn't know they get caked up that quick. Blanking this off as you said would be much better. I read somewhere else that someone sealed off the actual EGR rather than disconnecting the vacuum switch :| (literally with the base of a catfood tin :|)

    When disconnecting would the ECU need any reprogramming or adjustment??

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    I have driven for mine disconnected for nearly a year now and only had the one fault code thrown at me which was solved by turning the engine on and off again and it cleared itself. Considering i do 25k a year its not bad imo.

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    Sweet

    I now have Op-Com so clearing a duff code is way easier than removing and cleaning the unit.

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