I changed the spark plugs on a 2001 ford F-150 and the tips were covered in a white residue.Also the electrode ends were coned shaped with a little bit of flat spot left on the very tip of most of the.I changed them , but now I,m curious as to what this discoloration means.It all started with a tank of bad gas , wich led to miss-firing.
2006-08-04 10:51:18 · 11 answers · asked by John G 2 in Cars & Transportation ➔ Car Makes ➔ Ford
If the end of the plug that is not threaded was white, it is the original factory plugs. They are painted white on the end from the factory. On the electrode end, a small amount of white residue is normal, and your truck is operating normally. If the end of the electrodes are sloped or tilted at an angle, they are worn from normal use. The small flat spot you mention is the tiny disc of platinum that is used to make the plug more efficient, a double platinum plug would have two discs facing each other on the electrodes.
2006-08-04 17:20:21 · answer #1 · answered by yugie29 6 · 0⤊ 2⤋
White Spark Plugs
2016-10-04 14:21:48 · answer #2 · answered by ? 4 · 0⤊ 0⤋
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RE:
what does a white colored spark plug mean ?
I changed the spark plugs on a 2001 ford F-150 and the tips were covered in a white residue.Also the electrode ends were coned shaped with a little bit of flat spot left on the very tip of most of the.I changed them , but now I,m curious as to what this discoloration means.It all started with a...
2015-08-16 22:30:31 · answer #3 · answered by Anonymous · 0⤊ 0⤋
Geez, a lot of people running older bikes. If your bike is fuel injected and newer, (2006 and up) white plugs means it's running as intended by the manufacturer and in accordance with the EPA. Yes, it's running lean, probably 14.6 to 1. Fuel tuners are available (albeit illegal for street) they range in type and run from $100 (load based) to $1000 (complete ECU replacement with dynamic self, auto tuning features.) Retuning to a 12.5 - 13 to 1 mixture becomes critical if you change intake or exhaust assemblies, as they will further lean your mixture and your engine will melt.
2016-03-17 02:25:34 · answer #4 · answered by ? 4 · 0⤊ 0⤋
The white coating means the engine was running lean. Not to worry though, as due to stringent fuel economy standards most all engines these days are set to run lean. It they are a bright white it wouldnt be a bad idea to change the fuel filter or do a pressure test at the fuel line. They should be white-ish, with a little bit of tan showing.
White is lean
Black is rich
Carbon buildup means burning oil
Tan is what you want to see.
2006-08-04 11:02:03 · answer #5 · answered by ThisJustin 5 · 2⤊ 0⤋
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no, your bike is running lean. turn your fuel air screw out twice and run around and check again you want a light chocolate brown. If its black turn the screw in 1/4 of a turn at a time until you get the brown color if it's still white turn it out 1/4 at a time till you get the brown plug.
2016-04-10 22:24:52 · answer #6 · answered by Anonymous · 0⤊ 0⤋
So the plug wasn't white, more like white flakes? Sometimes gas additives will leave a weird film on the ceramic.. but would need to view it to tell you exactly
2006-08-04 16:42:51 · answer #7 · answered by gearbox 7 · 0⤊ 0⤋
Depends on how white they are. Very white means that the engine is running too lean. The computer on the truck will set a check engine light with codes for running to lean. A slight white and brown tent is a normal buring engine, black means it is running rich. The way you describe it, it may be normal.
2006-08-04 15:28:58 · answer #8 · answered by Josh S 7 · 0⤊ 0⤋
A white plug means that it is not the correct plug for the engine temperature range. Go to your local auto parts store and get the correct temperature range plug for your engine.
2006-08-04 11:06:09 · answer #9 · answered by bobby 6 · 0⤊ 1⤋
simply running to hot of plug ,or a lean condition
2006-08-04 13:39:15 · answer #10 · answered by Steve P 2 · 0⤊ 0⤋