Why engine does not fire?

did youcheck for fuel pressure??

Roy

Yes.There is little or no fuel pressure but there is no fire going to the fuel pump>>>There is just no fire. I have disconnected clean/sprayed the main harness on the firewall with no positive results.

when you turn the key on, it will activate the pump for only 2 seconds. after that, it will turn on when the motor starts.

check the interia switch behind the right lower kick panel especially if had it towed.

Roy

Thanks>>>Have not been towed>>>But would the fuel pump being inoperable prevent getting fire at the coil and spark wires?

which motor do you have??

did you crank it long enough with a good ground on the plug to check it.??

Roy

The vehicle has a 4.6 engine and yes to the length of cranks.

it is rare for a no spark condition on the 4.6/5.4 series.

i would verify fuel pressure first with a gauge.

Roy

But there is NO spark, so what else? Could it be the cam sensor?

yes, it could but it would throw a code if it was. is there any codes?? if not, i am still going to refer back to fuel pressure as it is the first check in a diag after compression test.

Roy

Nothing is showing up on the codemachine. However I did put a live wire from a battery directly to the fuel pump wire leading to the fuel pump and did not hear the pump engage. If the pump is working would that generate fire/spark?
But my unlining question is why isnt there's fire from the coil and leading into the coil? Even if there is fuel would the vehicle start w/o spark? I am very thankful in your help>>>>Semper FI

hoo rah. anyway, there should be a 12 volt feed to the coil. if there is not, then yes, there is a power issue to the coils.

if the pump did not fire up, then try spraying carb cleaner into the air filter and see if it comes to life for a few seconds. if it does, then you may have a pump issue. if not, then you have an issue with power to the primary ignition.

Roy

Roy I am very thankful for all your effort in assisting me resolve the vehicle's problem.
With the help of my neighbor we did find out the problem. It was a fuse located in the Main (engine compartment)fuse box.He came over and hit the fues box cover and the vehicle started. I changed the fuse and all is working now. Semper FI

good, glad to hear it but i am concerned because fuses blow for a reason and if it is not found, it will do it again. do not give up on this as i think you still have issues.

hoo, rah

Roy