Spark plugs too clean?
Senior User
Joined: Nov 2001
Posts: 294
Likes: 0
From: Calgary Canada
Spark plugs too clean?
I recently put in a new set of plugs in my '72 302 at about the same time that I put on a set of headers and switch the point ignition out for a Pertonix unit (kept original coil). After about a week of running I took one of the plugs out and was suprised that it was absolutely clean...looks like new. The porcelain is white and the electrode is light grey.
The old plugs were a light brown colour. I think the new plugs are a hotter plug.
Is this OK or is it a sign that I am running too lean? The water temperature is OK and the truck runs very nicely.
Thanks
The old plugs were a light brown colour. I think the new plugs are a hotter plug.
Is this OK or is it a sign that I am running too lean? The water temperature is OK and the truck runs very nicely.
Thanks
Tuned
Joined: Mar 2002
Posts: 405
Likes: 2
From: Ft. Walton Bch 32547
Spark plugs too clean?
[updated:LAST EDITED ON 02-May-02 AT 05:15 PM (EST)]Usually white plugs are a sign of running lean. That or the heat range is too high. Between the headers and the Pertronix, you could be having a combo of both. As you probably know, the light brown color is ideal. To get a true reading, you would have to make a wide open throttle run, and then shut down the engine without having it idle. Then check your plugs. Sometimes tough to find a place where you can do this.
Senior User
Joined: Nov 2001
Posts: 261
Likes: 0
From: Western NC
Spark plugs too clean?
If it's running nicely and doesn't ping under load, what you've got is a perfect situation. Don't mess with it. You know what happens when you mess with something that's working properly, right?
Thread
Thread Starter
Forum
Replies
Last Post
bryanknie
1948 - 1956 F1, F100 & Larger F-Series Trucks
85
Oct 16, 2022 12:43 AM
bigcountry62
1973 - 1979 F-100 & Larger F-Series Trucks
16
Apr 26, 2013 12:52 AM
