318 Poly Vibration
Swapped the carb base gasket with the one on the top. PCV port is in the bottom center hole of the gasket on the bottom. PCV now works fine off the carb.
Started fine, idles fine, still slight constant vibration. Checked oil, looked good.
Pulled all plugs, all black. I knew it was a little rich, but I've changed the plugs a few times and they were never black, checked my pics, dated 10/8 plugs looked fine. I'm guessing black because it's only been idling lately.
Noticed smoke from carb after shutdown, could be float needs adjustment or idle mix screws too far out. Looks to be entering at or below butterflies, very small amount, hard to see.
Carb is original to engine, which was original in another members car. Idle mix screws were about 7 turns out when I got it, noticed before I rebuilt carb, part of instructions is to write down number of turns in before disassembling. Once rebuilt, wouldn't run well w/o screws out 7 turns. Thought way too much, plugs were not fouling or blackened, checked multiple times, ran well, didn't smell rich at all or eat gas.
Per the comp tester instructions, warm up engine to test, disconnected coil, open carb butterflies, crank same amount for all.
Starting with odd at #1, 120, 120, 110, battery died, really, new a few months ago. Had to get back to family time so stuck the charger on it.
Back to it today, cold engine, but did all starting with odd at #1, 150, 150, 145, 150, starting with #2, 145, 150, 140, 150.
Pulled valve cover to help find #1 tdc. There is a timing tab on the cover, but balancer does not have a timing mark. Apparently this is the case with some polys. I have 3 polys, 2 have no mark, one has no balancer. Not a later balancer, not 180 off.
Found tdc, set it to 10dg btdc for initial start, same as when I originally started engine. Rotor exactly on #1 at 10 dg btdc.
Bought new plugs, borrowed timing light but ran out of time.
Next: gap/install plugs, check floats, set idle mix screws, install tach, start, set timing, adjust carb starting at 2 1/2 turns out on idle mix screws, again.
Swapped the carb base gasket with the one on the top. PCV port is in the bottom center hole of the gasket on the bottom. PCV now works fine off the carb.
Started fine, idles fine, still slight constant vibration. Checked oil, looked good.
Pulled all plugs, all black. I knew it was a little rich, but I've changed the plugs a few times and they were never black, checked my pics, dated 10/8 plugs looked fine. I'm guessing black because it's only been idling lately.
Noticed smoke from carb after shutdown, could be float needs adjustment or idle mix screws too far out. Looks to be entering at or below butterflies, very small amount, hard to see.
Carb is original to engine, which was original in another members car. Idle mix screws were about 7 turns out when I got it, noticed before I rebuilt carb, part of instructions is to write down number of turns in before disassembling. Once rebuilt, wouldn't run well w/o screws out 7 turns. Thought way too much, plugs were not fouling or blackened, checked multiple times, ran well, didn't smell rich at all or eat gas.
Per the comp tester instructions, warm up engine to test, disconnected coil, open carb butterflies, crank same amount for all.
Starting with odd at #1, 120, 120, 110, battery died, really, new a few months ago. Had to get back to family time so stuck the charger on it.
Back to it today, cold engine, but did all starting with odd at #1, 150, 150, 145, 150, starting with #2, 145, 150, 140, 150.
Pulled valve cover to help find #1 tdc. There is a timing tab on the cover, but balancer does not have a timing mark. Apparently this is the case with some polys. I have 3 polys, 2 have no mark, one has no balancer. Not a later balancer, not 180 off.
Found tdc, set it to 10dg btdc for initial start, same as when I originally started engine. Rotor exactly on #1 at 10 dg btdc.
Bought new plugs, borrowed timing light but ran out of time.
Next: gap/install plugs, check floats, set idle mix screws, install tach, start, set timing, adjust carb starting at 2 1/2 turns out on idle mix screws, again.
