I was rather a bit too trusting with letting my friend stick some oil in my fiesta but long story short he put rather a bit too much in, (an excessive amount) and the car would start, but would gurgle then cut out. So I drained the oil and got it back to a regular level but the car is still gurgling when its idling and cuts out 80% of the time. Im not sure if he's done some permanent damage or what, I had to drive it home, somehow managed, although it wasnt pretty.. no smoke just alot of cutting out. Hopefully I havnt done anything serious like blown a gasket? Anyone any ideas?