Uneven Fuel Burn

[howco4]

I'm noticing a lot more soot on the floor of my garage from the driver side tailpipe, then the pass. side, (my exhaust tips curve downward). I'm running a 650 Edelbrock, with a Wieand single plane manifold on a fairly stock 383. Before I start experimenting, a good opinion or two wouldn't hurt.

 

[the67fish]

Its probably the cockeyed firing order syndrome, 18436572 aint an optimum thang.

 

[Jim Lusk]

Make sure you aren't sucking air past the intake valley pan (or oil, too).

 

[demon seed]

I'm thinking the same lines as Jim, sounds like you've got one bank with an intake vacuum leak.

 

[howco4]

Tomorrow I'll get the starting fluid and give it a check. Both idle screws are very responsive, and react equally when adjusting. It will also idle right down to about 600 rpm if I wanted to set it there??? But will check for vacuum anyway. (May even remove the manifold and apply goop-en-plenty, and reinstall).

 

[JoeDust451]

Make sure you aren't sucking air past the intake valley pan (or oil, too).

I'll 2nd. that 8)

 

[howco4]

All tests show that I have an oiling problem. I'm hoping that' it's the result of a poorly sealed interface between the valley pan and intake port(s). I had the wife follow me today to compare exhaust coloration. Driver side had a noticeable trace of blue when running at speed. Will have to try and diagnose it.