: I recently got my '64 Valiant running after
: many years of storage with a previous owner.
:
: After a night of highway driving, I pulled the
: plugs to see what they looked like. 1 thru 5
: were various shades of tan with a reddish
: deposit on the electrode ceramic. In my
: opinion, they looked very normal, and I'm
: assuming the red color is from a fuel
: additive.
:
: Number 6 was nearly white with no evidence of
: red. Is this cylinder running lean?...and is
: that a slant trait because of the manifold
: configuration, or am I mis-reading it?
:
: I was very pleased to see absolutely no oily,
: or even dry carbon deposits on any of the
: plugs. Despite the clean burning, the car
: has a distinct roughness at idle. The idle
: mixture screw is adjusted properly, it's on
: the second tank of fresh fuel, the timing is
: steady at 5 degrees BTDC and it received a
: complete tuneup before I put it on the road.
: I also replaced all vacuum lines, and vacuum
: at the intake tap on the # 6 runner reads a
: steady 22 at idle. Could there be enough
: leakage at the tap fittings to lean out #6?
:
: At cruise, the engine is very smooth and except
: for the nuisance factor at idle, I'm totally
: pleased with the performance and condition
: of the engine. Maybe I'm asking too much
: from the 38 year old engine!

:
: I would check the valve lash adjustment,
: swap-out that spark plug and plug wire and
: see if that helps. (Is there any vacuum
: accessory comming off the #6 runner tap, if
: so try plugging it as a test)
: DD