I have a friend with a GTI that sounds like a diesel when the engine is hot. It's got an intake and a full cat-back exhaust.
We just opened the valve cover yesterday but found nothing out of the ordinary. Also did an engine flush and changed the oil and filter, but the noise is still there. It's only audible when the engine is hot. When cold, it sounds perfectly normal.
The sound seems to be coming from the right side of the engine from where the fuel pump is. Could this be a bad cam follower? Any other ideas?
We just opened the valve cover yesterday but found nothing out of the ordinary. Also did an engine flush and changed the oil and filter, but the noise is still there. It's only audible when the engine is hot. When cold, it sounds perfectly normal.
The sound seems to be coming from the right side of the engine from where the fuel pump is. Could this be a bad cam follower? Any other ideas?