I took the spark plug out today and the tip appear red rather than brown or black, 100% sure like flame red. Also the car is hard to start and feel rough below 3-4k rpm.
Can anyone tell me did i blow the engine or burnt valve or something else??

Thanks....


[Modified by evo, 11:45 AM 2/18/2002]

 

The gap is correct, i had the plug only 2weeks.

 

Flame red tips? Strange...

 

You're on FIRE buddy! Sometimes, probably most of the time, fuel additives give a certain color to parkplugs. Driveability issues are fun to trace out, it usually starts with replacing all the replaceable items, cap, rotor, wires after a long while, fuel filter. Depending on how many miles you've got on, o2 sensor condidion..so on and so fourth....

 

yes i've fuel additives in tank last week. Am i on safe side

 

As long as there aren't little glitter speckles of aluminum along with the flaming red plugs. You could clean the sparkplugs with a wire-brush if you like......

 

Yes... NOS additive is notorious for fouling a plug with a red residue... gas additives are a waste of cash....