Originally posted by todras:
Wouldn't you be able to see down the plug hole to see if thier is a leak or some residue? Hopefully it is just a gasket. Did he have them painted/PC'd. Maybe just reused the old gaskets. Maybe they are just worn.

Yes, and the top of the piston appeared the same as those in cylinder #4 & #6, but no residue. I have a set of valve cover gaskets, so that's not an issue I can't solve in 20 minutes. Pending the leakdown test results, I will begin to fully tear down the UIM/LIM, replace the injectors with the stock 19#'s, replace the plugs with double plats and see how she runs.

For Sale: 1997 Explorer XLT V8 AWD