Engine quits after running at no load
63, 327, LT-1 cam, B-28 vac can, 9 deg initial at 700, no recorded vacuum readings, plugs gapped @ 0.035, solid lifters set (today) by Hinckley-Williams cold set method
I hope this isn't a premature post, because I have read enough threads and archives to suspect a timing problem.
I ran the car around the block, then let it idle (idling 700) before checking timing. After approximately 5 minutes idling the engine died. It was difficult to start immediately afterward. Engine temp was 180 on temp gauge, 165 by IR, ambient 60 deg. After cooling down a little, it started right up. I decided to experiment. I turned the idle up to 1800 and let it run. After 5-10 minutes it quit. Temps essentially the same (180 gauge, 165 IR). Easy to start after some cool down. Repeated at 1200 with same result. During the the last run I was randomly spotting temps with the IR when I noticed significant differences in the exhaust port temps of various cylinders. I pointed the IR directly at each of the exhaust ports (manifold at head) and recorded the following temps by cylinder: 1-370, 5-475, 5-460, 7-480, 2-300, 4-550, 6-650, 8-580. I haven't calibrated the IR, so the absolute temps may be suspect, but what struck me as odd were the relative magnitude differences of cylinders 4, 6 and 8 compared to the others. Asuuming that the readings are not total bogus, what would cause one bank of cylinders to run hotter than the others? Is this symptomatic of the "engine quit" syndrome?
Steve
I hope this isn't a premature post, because I have read enough threads and archives to suspect a timing problem.
I ran the car around the block, then let it idle (idling 700) before checking timing. After approximately 5 minutes idling the engine died. It was difficult to start immediately afterward. Engine temp was 180 on temp gauge, 165 by IR, ambient 60 deg. After cooling down a little, it started right up. I decided to experiment. I turned the idle up to 1800 and let it run. After 5-10 minutes it quit. Temps essentially the same (180 gauge, 165 IR). Easy to start after some cool down. Repeated at 1200 with same result. During the the last run I was randomly spotting temps with the IR when I noticed significant differences in the exhaust port temps of various cylinders. I pointed the IR directly at each of the exhaust ports (manifold at head) and recorded the following temps by cylinder: 1-370, 5-475, 5-460, 7-480, 2-300, 4-550, 6-650, 8-580. I haven't calibrated the IR, so the absolute temps may be suspect, but what struck me as odd were the relative magnitude differences of cylinders 4, 6 and 8 compared to the others. Asuuming that the readings are not total bogus, what would cause one bank of cylinders to run hotter than the others? Is this symptomatic of the "engine quit" syndrome?
Steve
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