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Why to use new copper washers when an injector has been removed

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The 2 photos speak for themselves on why new copper washers should be used when an injector has been removed. 

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After a soak in vinegar to loosen up the carbon, scrub with very fine steel wool, spray clean with brake cleaner, new o-ring and copper washer and a bit of clean oil it’s ready to go back in. 

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Don’t forget to clean out any carbon build up inside the injector bore on the cylinder head too!

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If you have low mileage connector tubes you can get away with just putting new o-rings onto the connector tubes.  But if they are high mileage, the edge filter will be worn down and warrant new connector tubes or if they look like they do in the attached photo, just get new connector tubes. 

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