What is this white residue on my old spark plugs

[vscommo95]

Hi changed my plugs and leads today in my 1995 series 1 vs commodore , anyways every single old plug i removed had some white residue shit caked on the bottom of the spark plug looked bit like white corrosion , and two of the spark plug leads were melted to two plugs , anyways does any one know what this white stuff is on the bottom of the spark plugs .

[moff_man]

hers a pic that should say it all

if you need it a little bigger than click http://www.aa1car.com/library/reading_spark_plugs.jpg

[vscommo95]

Thanks for that moff man that was a great help , according to the picture it is ash deposits cheers .

[Brett_jjj]

If the plugs are white looking it can mean there is a vacuum leak making the engine run lean or the plugs are running too hot ,you can switch to a colder plug which can help.Ive seen it happen when the car is used on the open road a lot at high speeds..Australias crappy fuel quality doesnt help either.

[moff_man]

also lpg does this to the plugs

[Maxxiz]

Please dont tell me you tried to add a bit of spark to your love life :/

[deXtrous]

Please dont tell me you tried to add a bit of spark to your love life :/

BAHA! made me crack up.


cool picture too moff man! Thanks

[moff_man]

that picture used to be in the back of the gregories not sure if its still in them.