Can a 1999 Ford F-150 start but not start?

I have a 1999 Ford F-150 that cranks the engine but will not start. I last drove the truck home from a 18 mile trip and the truck exhibited no problems, the next morning the truck wouldn’t start.

Can a weak fuel pump cause a car to not start?

A weak fuel pump may still pump fuel, but the vehicle may experience difficulty starting from the lack of pressure. A weakened fuel pump can cause the vehicle to take more cranks to start than normal, and in more serious cases may even cause the vehicle to require multiple turns of the key before it will start.

Why does my F-150 start after rapping the tank?

Billr is right, if it starts after rapping the tank, it is a worn fuel pump. How many miles on that truck? Mine had 158K. You can bypass the f/p relay very easily with a jumper wire after pulling the relay out.That applies 12 directly to the pump. If you don’t hear it, then it’s the pump or the wiring to it.

Why is my car cranking but not starting?

One, your engine is having trouble producing a spark. Two, your engine is having difficulty obtaining fuel. Three, your engine is creating compression. What is so pivotal about these three components is that to successfully run and drive the vehicle the engine needs fuel, compression, and a spark all working simultaneously.

I have a 1999 Ford F-150 that cranks the engine but will not start. I last drove the truck home from a 18 mile trip and the truck exhibited no problems, the next morning the truck wouldn’t start.

Billr is right, if it starts after rapping the tank, it is a worn fuel pump. How many miles on that truck? Mine had 158K. You can bypass the f/p relay very easily with a jumper wire after pulling the relay out.That applies 12 directly to the pump. If you don’t hear it, then it’s the pump or the wiring to it.

What to do if your car wont start after replacing the fuel pump?

Car won’t start even after I replaced the fuel pump. Car won’t start and turned off while driving. Replaced the fuel pump and I can hear it working. The car still won’t start.

Why is the fuel pump not running at Key on?

You are pretty certain the fuel pump (FP) is not running briefly at key-on, right? Try thumping on the tank a few times with something soft, like your hand; then try “key-on” and listen for the FP. If the thumping awakens the FP, then it is likely bad. The thumping jiggles worn motor brushes enough to renew contact, but only for a short while.