97 ZJ misfire cylinder #1 and never starts the first time.
I recently purchased a 97 GC and have had a few issues with it.
4.0 I6 175K Selectrac auto tranny
Recently replaced starter(old one died), 120A alternator, cap, rotor, plugs, wires. Cleaned idle sensor(was idling at 2500 rpm!), sea foamed intake, gas, and oil-changed oil after a 100 miles or so. I was getting misfire cyl 1 with CEL. It seems to have cleared up after all this, but still idles a bit rough at 5-600 rpm, and it never starts the first time. Any ideas? Fuel pressure is about 50 at idle, and I installed a new FI on cyl 1, which was a slightly different size and caused bad leaks. So then I switched 1 and 2 and CEL is gone, but I think the sea foam did the most work. Cyl 1 spark plug was much dirtier than the rest, and I suspect dirty valves was the issue.