Help Identify Smoke Problem Please
1979 350 with 20,000 on the rebuild. No modifications other than dual exhaust with no converter. No smog equipment other than PCV valve and it seems okay. 4 barrel Q-Jet. Engine runs stong, no misses.
I drive the car some what hard and then park it. If I come back about twenty minutes - couple of hours later and start it, the right bank smokes for about four seconds. The amount of smoke is substantial. The smoke is light gray with an ever so slight blue hue to it (almost no blue). There is no smell of antifreeze and it doesn't smell of burning oil either.
If I drive the car easy and start it about twenty minutes later, there is no smoke; only does it if I have gotten into the throttle. While driving, there is no noticable smoke, even at full throttle.
I pulled the spark plugs today and saw that the back right plug was all gunked up and black in color. I put a new plug in it and went down the road for a hard throttle session. Came back 20 min later and the smoke came back.
I did do a compression test of the right bank and they were all right around 110 psi. I do not notice oil consumption nor coolant consumption.
What do you all think could be the problem. (carb?)
Chris from Ohio
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