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Old 02-17-2013, 01:26 AM   #12
DoubleL
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Join Date: Jun 2012
Location: Rathdrum, Idaho
Posts: 305
Re: Help with timing issue

So I set the timing at 4 degrees advanced with the vac line plugged. With manifold vacuum it advanced the timing so far at idle the truck would barely run. It ran horribly on the road popping and losing power under load. I switched the line to a ported vacuum and it stayed at 4 degrees when I hooked it up and drove great! So for my truck and new distributor it was ported as the only option. I do have a sputter on acceleration but I think it might be a carb issues.
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