Hi I own a 1997 Ford F150 with the 4.2. I just recently had the motor rebuilt at 102,000 miles along with that I had a new water pump,oil pump,harmonic balancer,spark plug wires and plugs.Now i have 105,000 and it started to stall and wouldn't start back up.And when i try to turn it over it shakes very bad but still won't start. Can someone please give me a suggestion to what this problem could be. Thanks

 

Sounds like you got some shooty plugs and cables.

Can you get it started at all?

 

Strange that the motor would need to be rebuilt at just 102k miles? Oh well. As for that shudder and no start; I would suspect that the plug wires are mismatched from the ignition coil to the plugs, or that the plug wires are not seated tightly on the coil or plugs, or that the plugs are not tightened into the block. Those seem like the simplest and easiest checks for those symptoms. If that doesn't solve yer problem post again and let us know.