I was thinking of buying a car but it ALWAYS grinds when shifting into 4th gear (up or down) regardless of the rpm. It occasionally grinds when shifting into 5th and 6th (only up) at a higher rpm. The owner told me that he just put in a new clutch (did it himself). I did notice that the clutch pedal was stiffer than I am used to.
Is this a result of the new clutch with a bad adjustment, or are the synchros bad? I didn't know about the double clutching test until after I looked at the car. He lives a pretty far drive away to test this again.
Does this have serious repercussions if ignored?