I had an issue with my 94 Taurus pinging, all systems checked out, comp was healthy 160 across all cylinders, what I ended up doing was dumping a couple of cans of GM Top Cleaner into the upper end through the vacuum lines and let it sit for an hour, fired it up smoked like an sob for a while, poof ping is gone. I'm thinking possible dirty intake valves. Ford Dealer also told me that ping is an issue, not always solvable, but this solution worked for me. I think Ford makes some type of intake cleaner also.
Sunday, December 31st, 2006 AT 5:09 PM