Hey Doc,
I would prescribe another test. Provided plug #3 also looks OK.. My diagnosis
would be that the carb for #'s 4, 5, 6 is a tad rich. (how long since the
carbs were tuned?). If there are no drivability symptoms, it is probably a
minor adjustment. I'd lean out the rear carb one "flat" at a time, until the
patient shows signs of improvement. -Being sure not to make it too lean...!
Take one carb adjustment, and call me in the morning...
David W. Jones
'62 Mk II BT7 tricarb
Cumberland, RI USA
----- Original Message -----
From: Dr. Carl Rubino
To: healeylist
Sent: Wednesday, September 01, 2004 9:32 AM
Subject: spark plugs
I pull my plugs every once in a while to check how well things are burning.
A week ago I went for a 3 hr run on a hot and very very humid day. Ran well
but idle was off. Pulled the plugs only to find # 1 and 2 were gray brown
in
colour as they should be and 4,5,6 were black with carbon (easily brushed
off). So what was-is-going on?
Carl
BN-4(L)
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