Ford EEC-IV Ignition Misfire - description, operation, testing part 1

Описание: ScannerDanner Premium is now available from my website here
https://www.scannerdanner.com/join-sc... This is one that will burn you if you have never seen it before. The first time I saw this problem was at one of the garages I troubleshoot for, long before I started video taping everything. I actually posted the images on iATN, I think maybe 2004? They are still there under my image library if you guy want to look them up. Exact same pattern on the PIP signal as you will see in this video. The garage had already replaced the distributor and just about everything else. With much difficulty, I mistakenly replaced the engine computer! And of course I didn't fix it. It is always difficult when you get a bad new part. Anyway, I know you guys will enjoy this two part series. It certainly brought me back to memory lane.

Engine Performance Diagnostics chapter 22

Symptoms
#2 cylinder misfire
intermittent misfiring from other cylinders
run okay at WOT and idle
no misfiring with Spout connector unplugged

Fix
replace faulty distributor pick-up assembly

Tests shown
how to verify weak spark with an in-line spark tester
how to test the PIP and SPOUT signals with a lab scope
how to test coil primary current to verify a dwell time problem

Tools used
lab scope
inductive low amp probe
in-line spark tester

Playlist
Chapter 22 No start No Spark
   • Chapter 22 No start No Spark  

Related videos
ScannerDanner gets his butt kicked by an '88 F-150 (EEC-IV Ignition)
   • 1988 Ford F150 EEC-IV , No Spark [Good Ign...  
It's back! But is it the same problem? (1988 F-150)
   • 1988 F150 Hesitation Problem [FIX!]  
Section 22 No Start, No Spark Diagnosis (Part 2)
   • Видео  

This channel is dedicated to training both the do it yourself mechanic and the professional technician. It does not matter your level of experience, I can teach you to troubleshoot electrical and electronic systems of both cars and trucks, gasoline and diesel. The information I cover is focused on universal concepts, that apply to all systems, in all model years. It is even applicable to other non automotive related systems.
Some basic electrical knowledge is helpful but not necessary.

Disclaimer:
Due to factors beyond the control of ScannerDanner LLC, it cannot guarantee against unauthorized modifications of this information, or improper use of this information. ScannerDanner LLC assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. ScannerDanner LLC recommends safe practices when working with power tools, automotive lifts, lifting tools, jack stands, electrical equipment, blunt instruments, chemicals, lubricants, or any other tools or equipment seen or implied in this video. Due to factors beyond the control of ScannerDanner LLC, no information contained in this video shall create any express or implied warranty or guarantee of any particular result. Any injury, damage or loss that may result from improper use of these tools, equipment, or the information contained in this video is the sole responsibility of the user and not ScannerDanner LLC.