Why is my car pinking under acceleration?

My 1999 Toyota MR2 seems to be rattling/pinking under acceleration. I’ve checked the timing and its spot on at 10’ BTDC. Can you suggest any other issues that could be causing it? It was recently serviced...

My car misfires every few weeks - why does one spark plug always get oil on it?

Every few weeks I have to take the same spark plug out to clean oil off of it because it starts misfiring. Could you please tell me what the problem may be?

Engine coolant in with spark plugs - what could it be?

I've got a 2005 Ford Focus. A few weeks ago it started juddering and the engine light was flicking intermittently. My mechanic found lots of brown, horrid water in with the spark plugs, which were very...