One side of Dauntless smoking

[Edgemere]

Hello,
New to this forum. I hope that I'm not repeating a thread here.
I have a recently acquired 69' CJ5 with a Dauntless Buick 225 V6 with an HEI, Rochester 2GC and headers. I've got smoke and what smells like a rich condition on the passenger/right exhaust. The two exhausts also sound different.

Cardboard placed behind the exhausts (to stop water and exhaust from spraying other parts gets blackened on the right side - not on left side

I have confirmed that I have the correct HEI - odd fire

I have timed the engine to 5 deg BTDC - vac disconnected - 19-20hg with about 33 deg advance at idle

Idle screws adjusted using tach and vacuum gauge. I can crank the right side screw all the way in and that side still smokes.

Choke is open
Will idle down to 600.
Seems to have a slight miss on right side at idle.
Compression is 140-150psi on all six.
New plugs
New gas

So what's next? Sticky exhaust valve? Bad plug wire?
The old plugs looked a little more sooty on the right than the left side, but still dry. All three on that side looked the same. That said, while consistent, I have no trust in how the PO was running it. I'll wait a bit before I drag the plugs out again to inspect (and whats the deal with the tiny plug holes? I can barely get a socket in there!)

Too smoky and smelly to be a fun driver. Any ideas would be appreciated.
Thanks!

 

[Lumpy Grits]

:ww:

Time for a compression and leak down test.
My bet-Head gasket.
LG

 

[RiverandSand]

:ww:

Time for a compression and leak down test.
My bet-Head gasket.
LG

This^ and pull the plugs on that side to find the culprit cylinder(s). Could be a valve seal or rings not sealing too.

 

[Edgemere]

Thanks LG - it ends up that I wired the HEI cap incorrectly. I put #1 with a 45 degree contact following it to #6 vs the 75deg. So, as the timing is correct on 1,3 and 5, they ran great, but 2,4 and 6 were 30 degrees retarded - not accounting for vac advance. I'm actually surprised that it ran as well as it did.
Cheers

 

[Lumpy Grits]

Thanks LG - it ends up that I wired the HEI cap incorrectly. I put #1 with a 45 degree contact following it to #6 vs the 75deg. So, as the timing is correct on 1,3 and 5, they ran great, but 2,4 and 6 were 30 degrees retarded - not accounting for vac advance. I'm actually surprised that it ran as well as it did.
Cheers

You win today's prize.........
Glad you found it.
LG