Red, Brown, Yellow or White Deposits - Fuel Additives

Scavenger Deposits:

Symptoms: Red, Brown, White or Yellow deposits.

Possible Causes:
- Normal condition caused by certain fuel additives which are designed to change the nature of deposits and decrease spark plug misfire tendencies.

NOTE: Notice that accumulation on the ground electrode and shell area may be heavy but the deposits are easily removed. Spark plugs with scavenger deposits can be considered normal in condition and be cleaned using standard procedures.