99WhiteSS

I had the spark plugs out for inspection today. #2-8 all looked good with a slight brown coating. #1 was clean as a whistle, no discoloration at all. I am thinking that #1 (being white) was running lean. This would explain why the engine feels a little off balance and the slight pinging I hear at low RPMs. Maybe just one cylinder is running lean? What would do this? Is there anything that I can do to check/clean the fuel injectors (now running some used SVO 30# injectors that I bought used from a guy on LS1.com). Any help would be greatly appreciated.

-Kris

akw408

[quote]Originally posted by 99WhiteSS:
<strong>I had the spark plugs out for inspection today. #2-8 all looked good with a slight brown coating. #1 was clean as a whistle, no discoloration at all. I am thinking that #1 (being white) was running lean. This would explain why the engine feels a little off balance and the slight pinging I hear at low RPMs. Maybe just one cylinder is running lean? What would do this? Is there anything that I can do to check/clean the fuel injectors (now running some used SVO 30# injectors that I bought used from a guy on LS1.com). Any help would be greatly appreciated.

-Kris</strong><hr></blockquote>

If you suspect it's the injectors, but not sure, why don't you swap the injector to another cylinder and see if the problem reoccurs on that cylinder. If so, I would send them to get cleaned up and balanced.

zombiedude

iTrader: (1)

or the inj orings

Colonel

Injector, injector O-ring, or (far less likely) intake manifold vacume leak.

CHRISPY

Is the plug itself white?
If that is the case it sounds like their is coolant in the combustion chamber.
Chris