[Mgs] spark plug 2 and 3 has black sooth

[Larry Daniels]

----- Original Message ----- 
From: <1971mgb at cox.net>
To: "MG list" <mgs at autox.team.net>
Sent: Sunday, February 24, 2008 1:08 PM
Subject: [Mgs] spark plug 2 and 3 has black sooth


ok folks I'm still messing around with my HS4 carbs., I've adjusted the 
carbs to where I'm almost contend with the mixture, however my issue is that 
not all my spark plugs have that nice grayish color to them, if I'm looking 
at number 1 spark plug (nearest the radiator) and count toward the rear of 
the engine then number 4 would be near the heater box, having said that 
number one spark plug then is a nice gray and number 4 near the heater box 
is nice and gray that leaves number 2 and number 3 having black sooth on the 
them (bottom of spark plug). Do I need to lean out the carb nearest the 
front (near radiator) or the rear carb. nearsest the heater box?

Thank you all for your input.
_______________________________________________

I wouldn't lean out either carb.  They, obviously, are tuned correctly for 
the other cylinders they are feeding.  You don't want to lean them out too 
much and burn them up.

Did you do a compression check on the cylinders?  Look, also, to the 
ignition on those two cylinders.  Pull the plugs out and hold them 1/4 inch 
from the head.  Do you get a strong spark?  If not, work back from there.

Larry Daniels