Quote:
Originally Posted by Arctic
Hi David.
Remove your EGR give it a good clean scrap out most of the crud, you can then use swarfega with a tooth brush to do the rest, wash it out with carb cleaner after.
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if you want a bypass one gut your original EGR as here below.
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No MOT tester will know the difference 
Be warned though no point in any of the above if you do not clean out the manifold as well, remove the MAP sensor wipe that with a rag sprayed with carb cleaner.
To clean the manifold again scrap out most of the crud and then use oven cleaner soak for at least 2-3 hours and jet wash it out repeat if you need to.
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I have seen some really bad ones.
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You want the inside to look like this.
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MAP sensor before and after a clean wipe.
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Arctic, do you do an exchange service, clean ones for crudded up ones?
macafee2