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A fix for MPV misfires and coil problems... After several episodes of fouling plugs and/or bad coil packs, usually after rains, I began to look for causes and tried an experiment by leaving the black plastic shroud off when I replaced the plugs and coils. I suspected it was trapping moisture and humidity and forcing it down into the plug wells. Amazingly, my MPV has been misfire free for close to three years now. The longest I had gone previously was 12-15 months...when the van was new! It may just be coincidence but it worked for me!