Starts after being towed
A typical & frustrating problem is a car cranks but does not start, then after being towed in to the shop it starts just fine. Usually it will start normally over & over again. You release the car to the owner and a day or so later it’s back with the same complaint. Of course there are several things that could cause this but by far the most common is a bad fuel pump. But you sure don’t want to charge for a fuel pump unless you can find some evidence to prove it. Give this a try.