Well the sound of the engine did not change, or if it did it was a very minor change. I don't think the mixture drastically became richer at the moment i lost power. I just took a look at my glow plug, it was fouled so I changed it (presumably from yesterday). I started the car and the engine will rev but the car will not move at all however the wheels will spin if i pick the car up and rev it a little. Maybe this is a clutch or clutch spring issue?