Here's a head scratcher I'm hoping someone can help me out with. Over the past several weeks there have been times that while driving my 53K it started to cut out. The fuel pump was leaking, and so I thought that was it and replaced it. For a time it didn't do it, so I thought I had it fixed. But a few days ago I was driving again and got on the freeway. As soon as I hit about 40 mph it started cutting out badly. I pulled over, and it seemed to settle down a bit, but then I got stopped at a stoplight and it died on me and I couldn't get it started again. So I pulled into a parking lot and got my friend and tools.
1st. I checked the new fuel pump, i.e. disconnected the line at the carb and ensured that it was pumping fuel through--it was.
2nd. I removed the sparkplugs, cleaned and gapped them, checked to see if they were sparking with my friend cranking the engine--they were, nice blue flame. At this point I reinstalled the sparkplugs and tried starting it, but it wouldn't. I sprayed copious amounts of starting fluid in the carb, but not even a pop.
3rd. Wondering if it were possible the timing chaing broke (I knew this couldn't be it) I re-removed the plugs and did a compression test on each cylinder--absolutely normal (in fact, the compression is now even in all 6 cylinders. When I first got the car last spring one cylinder was low and I have been running Marvel in each tank of gas, which I think has freed up a ring that was stuck to the piston of the low cylinder).
4th. I poured a little bit of gas--only 3-4 drops--in each cylinder before reinstalling the plugs, cranked it over, and nothing. Again, not even one cough.
5th. I wondered if somehow the timing was radically off, so I removed 1 plug, put my thumb over the hole, and had my friend crank the engine. I watched the spark to see if it would correspond with the compression stroke--it did.
At this point, I was so stumped, I gave up and had it towed to my house where it sits until I can think of what else to do. Spark--check, compression--check, gas--check. It should run. Help!