91 f150 spout connector problem no start up with spout in place

[91f150]

Hello guys I’m have a problem with my 1991 f150 5.8 I disconnect the spout connecter and the truck start right up , I put the spout connector in place and it only cranks but no start up
I replaced the rotor the cap the distributor and the tfi etc...
Need helppp

 

[miesk5]

Yo 91f150,
Welcome!
I call this issue, "Spark w/SPOUT Connector Un-Plugged, but Falters; and/or No-Spark w/SPOUT Connected"
"...
when I plugged the SPOUT connector back together, I could make the engine falter and die by gently twisting the harness. Yes! I was sure I had located the fault, and I was right. Look at the figure with the yellow spark output signal wire that is without a section of insulation. This section happens to run through a shield ground that provided a convenient ground source for the SPOUT signal.



Just the right bump in the road or vibration from the engine would provide a path of lesser resistance for the SPOUT signal, killing the coil trigger..."

Read more @ http://web.archive.org/web/20080808115620/http://www.asashop.org/autoinc/dec2002/techtotech.htm


May need a new harness or one from a yard queen. Or a new MOTORCRAFT ignition control module DY1284 from a trusted source such as https://www.rockauto.com/en/catalog...9,ignition,ignition+control+module+(icm),7172

Ignition Control Module (ICM) Removal Tips @ distributor; "...To remove the TFI = thick film integrated module you need to loosen the saftey "lock bolt" at base of the distributor so you can TURN the distributor for better access and removal but make a referecne mark so you can turn the distributor back exactly where it was otherwise you'll have to re-set the timimg so it will start and run properly. There's a special tool "ignition module socket, mfg by Powerbuilt # 648420 so you can remove the screws on the module to replace it BUT to test it you just need to turn the ignition key to the "RUN" position, engine off. don't remember what I paid for the "socket" maybe $15.00 range...?
Source: by JKossarides

Also read https://www.broncozone.com/threads/will-only-start-with-spout-connector-out.25860/
Any diagnostic trouble codes?
Try Self Test for Diagnostic Trouble Codes by my pal, BroncoJoe19 @ https://www.broncozone.com/threads/code-reader.14269/

Al