91 f150 6 cylinder shut off won't restart

[retireddave]

started it to warm it up and it stalled and won't restart. I am getting spark at the plugs and have sprayed starter fluid into the air intake but nothing. I have replaced the relays, fuel pumps are running, I have replaced the ignition module and still nothing. Any help PLEASE

[Crasen]

I would check ignition timing. maybe the distributor came loose or something. Are you spraying the starter fluid past the throttle plates, I am sure you are just making you you are not spraying it before the throttle plates.

[792frank]

Check your distributer cap for a crack, It wont be all the way through but look like a pencil like mark. I have one also and It has happend to me a few times. I dont drive it alot but For the most part it has never let me down except in the driveway.lol

[retireddave]

Just put on new cap and plugs, getting plenty of spark. Throttle plates wide open when adding starting fluid. check fuel line plenty of fuel in fact it smells like it is flooded. but it STILL won't start. HELP PLEASE>

[unclebubbles]

Originally Posted by retireddave

Just put on new cap and plugs, getting plenty of spark. Throttle plates wide open when adding starting fluid. check fuel line plenty of fuel in fact it smells like it is flooded. but it STILL won't start. HELP PLEASE>

If you smell fuel, it may be flooded. Check the fuel pressure regulator, vacumn lines to it...ect. If it goes bad, it can restrict the return flow of the fuel, causing excessive fuel pressure at cranking rpm. This can allow too much fuel to be forced through the injectors, causing a flooded condition similar to a stuck choke on a carbed engine. Pull a couple of plugs, to see if theyre wet. Maybe hold the throttle wide open while youre cranking it. Someone else mentioned the timing, check to see if its firing when its supposed too. A broken tooth on the dist. gear, sheared roll pin, rotor not installed properly or cracked and spinning on the shaft, can all let it fire at the wrong time. Good luck.
Later
Ed
.

[retireddave]

Originally Posted by unclebubbles

If you smell fuel, it may be flooded. Check the fuel pressure regulator, vacumn lines to it...ect. If it goes bad, it can restrict the return flow of the fuel, causing excessive fuel pressure at cranking rpm. This can allow too much fuel to be forced through the injectors, causing a flooded condition similar to a stuck choke on a carbed engine. Pull a couple of plugs, to see if theyre wet. Maybe hold the throttle wide open while youre cranking it. Someone else mentioned the timing, check to see if its firing when its supposed too. A broken tooth on the dist. gear, sheared roll pin, rotor not installed properly or cracked and spinning on the shaft, can all let it fire at the wrong time. Good luck.
Later
Ed
.

Ok Replaced the fuel pressure regulator and still no luck. The rotor is turning and I can't move it by hand. any more ideas, PLEASE.

[mechhound]

If the rotor is turning that means the camshaft is turning. If you get no response from starting fluid and it is firing, all I can imagine being wrong is a failed rocker arm assembly. But I can't imagine it all going at once. I understand you put in new spark plugs? So they wouldn't be fouled from gasoline. I would give it a good shot(five second spray) of starting fluid and try it again if you are sure you are getting good spark to the plugs. It probably won't start, but you should at least get a pop out of it.

[retireddave]

Originally Posted by mechhound

If the rotor is turning that means the camshaft is turning. If you get no response from starting fluid and it is firing, all I can imagine being wrong is a failed rocker arm assembly. But I can't imagine it all going at once. I understand you put in new spark plugs? So they wouldn't be fouled from gasoline. I would give it a good shot(five second spray) of starting fluid and try it again if you are sure you are getting good spark to the plugs. It probably won't start, but you should at least get a pop out of it.

I looked down the oil fill and can see the rockers moving when cranking the engine. I only checked number one for spark I'll check the rest today and try the 5 second shot of starting fluid. Thanks

[retireddave]

Originally Posted by retireddave

I looked down the oil fill and can see the rockers moving when cranking the engine. I only checked number one for spark I'll check the rest today and try the 5 second shot of starting fluid. Thanks

Getting spark on all cylinders tried the starting fluid still nothing.HELP PLEASE it's making me CRAZY

[retireddave]

IT LIVES
Turn out it was an ignition coil.
It was getting spark just not enough I guess. Thanks to everyone that replied.