read my sparkplugs?
Thread Starter
Team Owner
Joined: Jul 1999
Posts: 26,545
Likes: 46
From: Huntersville NC
read my sparkplugs?
Seven plugs look the same, which I am pretty sure is just fine. One of them (this was the #2 plug - sorry for fuzzy pic, but it is the one on the right) has a white deposit on the electrode. It's not glazed, just a whitish rough coating? Any ideas? :) MJ
Burning Brakes
Joined: Jul 2000
Posts: 1,162
Likes: 2
From: Beaverton, OR
Re: read my sparkplugs? (MNJack)
I believe the whiteish color means the cylinder is running a bit more lean. Maybe increase your jet size a bit? How many miles do you have on those plugs? They do not look bad to me at all really. My newer cars always have that white tinge to them, though I believe newer cars tend to run a little lean...
Thread Starter
Team Owner
Joined: Jul 1999
Posts: 26,545
Likes: 46
From: Huntersville NC
Re: read my sparkplugs? (BUGGSY1970)
My only concern was that one plug was different from the others. 7 looked like the 2 on the left, and the one on the right was white. I guess I won't worry about it. MJ
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Race Director
Joined: Dec 1999
Posts: 11,096
Likes: 990
From: Sierra Foothills CA
Re: read my sparkplugs? (The Dude)
If the color re-pro on your pic is accurate I wouldn't worry about it- it looks lighter than the others but is still a light tan, which is fine. :thumbs:
Race Director
Joined: Nov 2000
Posts: 11,872
Likes: 12
From: Waterloo ontario Canada
Re: read my sparkplugs? (MNJack)
The plugs look fine. Don't richen it up. I have posted numerous times on running different heat ranges in different cylinders. You have just discovered what alot of chevy guys have known for years. All cylinders are not fed equally. I normally run Accel plugs # 276 but in number 2 cylinder I run a #274. One step colder.
Once again I would not richen the carb nor worry about any of those plugs.
Once again I would not richen the carb nor worry about any of those plugs.
Drifting
Joined: Oct 2000
Posts: 1,825
Likes: 56
From: Shawano WI
Re: read my sparkplugs? (MNJack)
The one on the right is excellent. A slight white ash over the electrode, turning to a light tan at the bend. If that came out of a race motor I would call it perfect jetting and timing. The other two are slightly rich, but not enough so that I would rejet. It is better to be slightly rich on a street motor.