1973 Other International Models heavy truck 501 engine

1973 INTERNATIONAL
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BIGEDS66
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1973 Other International Models 6 cyl Two Wheel Drive Manual

complete engine rebuild, new carb, coil, plugs, plug wires, points, condenser. rotor and cap. Engine starts easy has no power under load sounds real bad. fireing on only 2 cylinders 2 and 6, weak spark in points. Can't figure out why its not running right. Can you help?
Apr 2, 2010 at 5:09 PM
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2CARPRO JACK
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What gap did you set the points at?
Apr 5, 2010 at 8:03 AM
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BIGEDS66
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I tried .19 first and then .25 didn't find much difference in anyhing
Apr 5, 2010 at 1:02 PM
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2CARPRO JACK
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try .16 and see if it runs any better.Do you have a dwell meter so you can chek the dwell angle? Shoudl be at 30 degrees if I remember correctly
Apr 5, 2010 at 10:35 PM
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BIGEDS66
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tried .16 gap also replaced some wiring that was queationable. Not much change, still weak spark, pale yellow not blue.
Apr 12, 2010 at 2:27 PM
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2CARPRO JACK
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what kind of system voltage do you have at the coil?
Apr 12, 2010 at 5:06 PM