blake0528

Alright i took out all the plugs and there was no difference. I had the starter checked it was bad so I replaced it. No change in what it was doing. I then changed the mega fuses and its trying a little harder to turn over but still stopping. Could it be the coils?

BareBonesXL

How far does it turn? And can you turn it by hand using a wrench? Might be a timing chain or camshaft problem. Try to turn the engine backward by hand. If something is jammed between the piston and cylinder head it might rotate backward.

Have you checked the oil level? Is anything sticking out of the side of the block, or are there holes in it?

Coils don't have anything to do with the engine cranking/turning over. The engine has to crank/turn first, then the coils provide spark so that it will start. But if it's not turning over the coils can't do anything.

Interesting problem, but I'm sure it sucks to be there.

raysorenson

A grown man should be able to turn the motor by the 18mm crank pulley bolt clockwise with a regular sized 1/2" drive ratchet even with the spark plugs in.

The engine is probably not hydrolocking. The injectors that came with your engine are trouble free for life, no exceptions. If you've heard about injector problems with this generation F150, you've been told wrong. The 11th gen F150 often hydrolocked from stuck open injectors, but you're not working on that type of truck. The only other hydrolocking you could be having is coolant. If you're not missing coolant, you're not hydrolocking.

16IngotFX4

I am comfortable saying your ignition system is not at fault such as coils or plugs.
Think of any vehicle you've ever had in the past, or maybe you've never had the experience. You can remove the coil wire and turn the key and the motor will crank until the battery dies. Your experience is such that the starter is losing a connection and therefore quits turning. Or there is internal damage of hard parts preventing the engine from turning over. Or it jumped timing and valves are closed when they should not be, adding additional compression to the motor, however that would mean there are open valves too. I think by 2007 there were valve reliefs in the pistons but I don't know if that is true so don't believe me. All that means is that if you did jump time, the piston would be hitting a valve unless there are valve reliefs in the top of the piston.

In all my vehicle, I've had only one bad injector. That was a 1993 5.0 motor, the screen tore somehow and lodged itself into the injector valve preventing the valve from opening. I think that is when I hydrolocked.
I found that from running a compression test, the compression test proved excessive compression in a cylinder. That assumption was followed up with a fuel pressure test, proving once the fuel rail was charged, it was draining off almost instantly. The injector with a stuck valve just let the fuel drain out of the pressurized system.

Unless you have excessive hydrolocking situation (more than one failing cylinder) you will have something else to solve.

blake0528

Im checking all the boxes. After I replaced the starter it did try to turn over a little more but not enough to really say there was a change. I am able to turn the crankshaft pully. Counter clockwise so nothing is locked up I would assume. I have to try the coils then im gonna start on harnesses. With the instrument panel going out it seems like an electric issue

BareBonesXL

It's still odd that the engine died while you were driving. But, you might as well try jumping the starter relay/solenoid. If you're sure that the engine turns freely.

I don't know where it is on a 97, it might be on the firewall instead of the fender. It will look about the same though. Find it (follow the battery positive cable) and do this.

This guy is lucky that it wasn't a manual transmission, in gear.