I can't tell you how many times we've had a car in the shop with a strange starting problem that turned out to be a leaking fuel injector. Here's the classic scenario, variations are possible and common: Your car starts fine in the morning. You drive to the store, run in for your morning coffee, when you return the car won't start. It turns over fine, but you're getting nothing but cranking. You go inside to gripe about your car and call for a tow. The tow truck arrives and just for kicks the driver decides to turn the key. It starts right up. You're mad, but now you can drive to work on your own so you're happy. What happened? A leaky fuel injector can cause this very problem. The solution is injector replacement. Check it out.