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Doing my injectors today, if cups doesn't come out should I pull anyways to put new o rings on it or leave it be? Thanks
 

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Most people dont from what I have read, but IMO you should. I had to to have my heads machined when I did HG's and I probably would have pulled them regardless. Rather do something once and right than have to pull it apart again for a leaky cup, but that is just my opinion, so take it for what it is worth.
 
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