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Hey there Louie I’m having the same issue with mine, did the fuel pump and new plugs end up fixing your issue?, what was the issue with it?I think I may have found the problem, the center of the fuel pump outer seal is missing around the small central shaft, this I think has lead to excess fuel getting into the cylinders and also running out the bottom of the air box. The plugs were constantly very wet with fuel when I checked them today after reving it and dropping back to idle. Fuel pump diaphragm looks thin and a bit perished so I’ve ordered a new Sierra pump. Will report back when it goes on with new plugs.