Help- any ideas what causes white deposits inside the distributor cap? Got a check engine light and slightly rough idle. Plugs and wires recently replced and look good. Checked the old cap and white deposits found on the pins. Replaced cap and button - light went away and she ran smooth for a week. Now Light is back on and checked the new cap an white layer is back! Looked all through Haynes manual and no luck. Any leads appreciated. Thanks..
(1999 Nissan Frontier 4 cyl)
-felesae
(1999 Nissan Frontier 4 cyl)
-felesae