318 Running Richer w/ Carb Swap
He has an HEI.
@twood16 what do the plugs look like?
Plugs were sooty, but the gapping was definitely generous considering it was just running on Lean Burn 2 weeks ago. But also would just the swap to the module be enough to gap that high with new plugs? I assumed I'd need an HEI distributor and coil to justify gapping that large.
Init timing seems to low. Only CD igns or HEI can tolerate 0.060" plug gaps, others should be 0.035".
Yeah it was a just baseline going off an aggregate of numbers we were finding at the moment. Fenderwell says 16 degrees but that was the lean burn spec so we just settled on a number that seemed reasonable.
Main Updates:
Coil did not change the misses
With the idle turned up to about 1500rpm there was no black smoke making it's way out the exhaust, but 2 revs in a row led to a black cloud on the 2nd rev
Finally popped the carb apart again to check the power valve and lo and behold it was wet with fuel on the backside
I assume someone has been in the carb before me as all Holley Spec sheets list the Primary Jets at 62 and these were 64 and it appears they swapped the power valve and ended up with a double gasket scenario.
Got the 2nd gasket off and put in a new power valve from another carb.
Started and died because the bowls were empty and while running around the car to pop the garage door back open I had the key on and it burned a fusible link wire.....
Based on my new understanding of the Power Valve function I'm assuming my rich idle will hopefully be cleared up now as vacuum won't be pulling excess fuel into the intake under the throttle blades. I still have to figure out the miss issue, so I'm gonna go with new plug wires next just to see as they are the only thing now that haven't been swapped out.
Oh, and an oil change since I may now have gas in my oil....