Slight miss in my 69 Z28

[PxTx]

Good info. When you say starts, is that because you are hooked to ported vacuum?

How many degrees of advance does the vac ad give you?

[Steve Shauger]

I would check vacuum level at idle and compare that to power valve #. I've had to change a power valve because it was too low numerically and it was leaking and opening too soon. It idled poorly and loaded up, and stumbled during initial acceleration. Now the car runs perfect. I was convinced it was a distributor vacuum /timing issue and it wasn't.

[sixt9rsx33]

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: paceme</div><div class="ubbcode-body">I would check vacuum level at idle and compare that to power valve #. I've had to change a power valve because it was too low numerically and it was leaking and opening too soon. It idled poorly and loaded up, and stumbled during initial acceleration. Now the car runs perfect. I was convinced it was a distributor vacuum /timing issue and it wasn't.</div></div>

Steve, vacuum level is 13&quot; at idle. Engine was luke warm and perhaps not the best connection on the base plate to the gauge hose. Maybe able to get a few more inches out of the reading. But I believe high enough and not an erratic needle reading. PV in the primary is 6.5 per Eric Jackson, and per the kit I just installed. However, I had to use the original 8.5&quot; secondary per Eric's original build because the kit came with a 10.5&quot;.

Thanks

[Plowman]

Ground wire on base plate,sound like the base plate is worn out,good one. Hope this help's you out.