what is it?
long story: ignition coils are known to be defective in 2006-2007 RAV4 and fail frequently under 100,000 miles. i replaced them all a couple of tears ago before a long transcontinental trip. most of them had that red dust between coil body and rubber boot. note it's not rust and it's bright red rather than rust-like in this picture in full sun. i assumed this was sign of failing coils.
fast forward to last weekend (20,000 miles later), i was playing with a cheap ebay boroscope and noticed one of replacement coils has a small amount of this red dust. everything else is great and the engine is very clean, no leaks of any kinds.
what the heck is it?
long story: ignition coils are known to be defective in 2006-2007 RAV4 and fail frequently under 100,000 miles. i replaced them all a couple of tears ago before a long transcontinental trip. most of them had that red dust between coil body and rubber boot. note it's not rust and it's bright red rather than rust-like in this picture in full sun. i assumed this was sign of failing coils.
fast forward to last weekend (20,000 miles later), i was playing with a cheap ebay boroscope and noticed one of replacement coils has a small amount of this red dust. everything else is great and the engine is very clean, no leaks of any kinds.
what the heck is it?