Ran fine until this morning's start, then chugging and rocking in the mounts, and no power. By touching the exhaust manifold branches (briefly!) found No.3 was barely warm - others were really hot. Checked plugwires with my inductive pickup timing light - #3 wire getting spark voltage. Checked all plugs...#3 looks like all the others, nice light tan. Checked compression at 155psi. Checked #3 plug wire with new plug laid against exhaust manifold - lotsa sparks. Installed new plug in #3 and runs as bad as before. So I have spark and compression, so I'm thinking it's a fuel problem, but now I'm out of my league. Suggestions? Thanks in advance!