Ignition coils sit at the center of every gasoline engine’s spark, yet they usually stay invisible until something goes wrong. When a coil starts to fail, the symptoms can look like fuel problems, ...

I have just experienced a rear coil spring failure on my VW Tiguan, fortunately it fell off in the garage. I have examined the spring and it looks like brittle failure due to breakdown of the ...

For mild street engines, stock valve springs are more than adequate. But if you've screwed in a big bumpstick for strip-banging or banzai runnin', then pay attention. Our plan was simple: Install a ...

Today a lot of street-legal vehicles and off-road rigs run modern coil spring suspensions. Coil springs in their various formats have a number of advantages over traditional leaf springs and torsion ...

This morning I came to take my wife's 2005 Fiesta auto out of the garage and heard a horrible scraping noise. I called Green Flag and the mechanic diagnosed a fractured front offside coil spring. The ...

Leaf springs are treated like archaic tech, as they aren’t found under any of the latest industry-leading performance cars, and are often used as a point of reference that shows how “dated” a ...

I purchased a new Audi A6 Avant (2.0-litre, petrol, Multitronic) in September 2004. I have been pleased with it, except for two ignition coil failures. The first occurred after 26,000 miles (just ...