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Re: Timing? Issues
Yep! That's exactly what I have! I set the timing to 6 degrees as instructed on the sticker. But I am having a hard time understanding how the advance for the distributor works. When I finished the timing I pushed the advance line onto the distributor and the idle went up. Obviously the vacuum was getting through the delay check valve. The vacuum source is the left base at the rear of the carb... which is how the emissions diagram shows it. So we have manifold vacuum with a valve that (as far as I can reason) blocks the vacuum at idle but is opened as the vacuum increases with throttle movement. Am I correct in my thinking here? So if this senario is correct, that means the delay valve is not working. I'm guessing that, all things being correctly routed, I need to replace this delay valve. Am I correct in my reasoning about how this valve actually works? Can anybody confirm this for me? I need to smog the truck in Cal. I believe the timing and everything else is set correctly now. Just need the advance working to OEM specs.
Steve
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