coil pack

Hi there Any advice appreciated! So this afternoon, I changed all 6 spark plugs on my C350. It's on 88000 miles and as I had no evidence to suggest they have ever been changed I decided to do them. I changed all the plugs for some new NGK PLKR7A, which are listed as OE equivalent design on...

Recently the engine management orange warning lamp appeared on my dash and the car suffered an immediate loss of power. My local garage diagnosed a coil pack problem and replaced this to no effect. Their diagnostics suggested that the cyclinder bank 1,3 & 5 was showing a misfire and Cat...