Rain, snow, threat of tornado slowed resuscitation this weekend... . .
- muffler has enough holes in it, there is no way it could be clogging up exhaust.
- timing light confirmed some signal on each wire. So distributor and ignitor are working (and the coil?)
- tried starter fluid in intake. No change. In fact, the only time it tried to catch, was when there was no starter fluid. Could it be flooded?
- pulled the plugs. 1&4 had a little bit of oil on the threads (leaking tubes?). All plugs had sign of unburnt and top of pistons were same. Plugs are getting signal but not firing?
(Background:. 330k. Original 91 head, machine shop rebuilt installed on a used lower block. The block bearings were checked, cylinders inspected, and new seals all around. Car was getting 27 with 80/20 hwy/city. It was burning oil , either due to valve seals (on rebuilt head?) or oil rings.)
- pulled the valve cover for grins. Valve train was tight, well oiled. Manual crank confirmed everything turning correctly with compression on each cylinder.
- Tried a noid light on 4 injector pigtail. No signal. Tried different light, nothing (using harbor freight set, maybe need a better noid light set? Which one specific?)
-got out the mechanics stethoscope. Confirmed 1,2,3 injectors are ticking while 4 was not as it was unplugged. Cranking did present plenty of fuel fumes (cover off, plugs out).
- while cranking during the injector testing, noticed some arcing. Plug wires were laying on filter and completing circuit to body.
- also noticed arcing from the pigtail to the coil. Pigtail wire into plug is loose, time for a new pigtail or plug. Hmmmm....
- ..... Wonder if the coil has gone. Confirmed fuel, confirmed air, confirmed (assumed) timing is right. Could be the coil is only sending a small voltage to the plug so they aren't firing.
Ran out of daylight. Time to test coil next.