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No spark

Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
That's pretty clear. If you have spark coming out of the coil wire, that only leaves the distributor cap, rotor or wires
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Saturday, July 13th, 2019 AT 11:45 AM (Merged)
Tiny
CJ MEDEVAC
  • MECHANIC
  • 11,005 POSTS
Lovely!

need voltmeter for all kinds of stuff...good to have one!

i have pics, using one for tests

if you place your spark plug on the engine (hex part to the threads) it will just as if the plug is screwed into the block---no damage!

see if it will spark multiple times, turning the engine over!

i will answer your questions, the best i can!!!!!

1) computer--possible, i've never encountered a bad one myself
2) wires---possible....we'll find out during testing
3) i think the relays are emissions related (we'll go there, if need-be)
4) ign switch-even brand new stuff can be bad! same with the "module" i've been there twice!........you can remove it and have it tested at an auto parts store....5-8 times (might pizz them off, but necessary to warm it up) if it fails last few, get another!!!!!test it the same, before you leave!!!!!!
5)if it turns over, starter system is fine
6)i'll link you to checking fusible links---read this mainly towards the bottom....with a voltmeter, you will also be able to check, stuff as far as how much, and when voltage should occur on the wires....this may be irrelevant to the ignition system....but good to know for a "no start" (cranking) situation.
https://www.2carpros.com/questions/1992-ford-ranger-wont-start
7) did you understand the ign switch explanation (key moves rod, rod moves switch)i sent as a link???

soon as you have a voltmeter, i'm gonna show you how to completely, bypass the ign switch....if it runs, i know where to investigate

if not,

we're gonna test the distributor--i have pics..might even link you, as i have already gone through before.

you still have the commo option that i offered in messages, might make you feel better to "vent", i shed tears, when mine are sick too!!!

the medic
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Saturday, July 13th, 2019 AT 11:45 AM (Merged)
Tiny
OZZIE62G
  • MEMBER
  • 30 POSTS
Thank you for the response. The cap, rotor and wires and coil & plugs also new. I take the coil to cap wire and there's no spark in to the Dis cap, the only thing I'm thinking is the wire but there brand new?
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Saturday, July 13th, 2019 AT 11:45 AM (Merged)
Tiny
0H CANADA
  • MEMBER
  • 18 POSTS
Medic, I'm up and running. Was wiring. Am mobile again.

Thanks for your patience, interest and help. I may be back soon, but hopefully not with a distress call. I need something replacement-wise at the base of my shifter; 5 speed manual. It doesn't have that firm hold. Feels like something is broke inside the shifter base, and has been for a while now.

Mike
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Saturday, July 13th, 2019 AT 11:45 AM (Merged)
Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
I don't get what you are saying. One minute you say you have no spark out of the coil and in another sentence you say you do have spark out of the coil. Which is it?
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Saturday, July 13th, 2019 AT 11:45 AM (Merged)
Tiny
CJ MEDEVAC
  • MECHANIC
  • 11,005 POSTS
Is this your transmission?

LOOK AT "41"....."42"......"43"

http://www.jeep4x4center.com/jeep-transmission-parts/borg-warner-t5.htm

THE MEDIC
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Saturday, July 13th, 2019 AT 11:45 AM (Merged)
Tiny
CJ MEDEVAC
  • MECHANIC
  • 11,005 POSTS
This puppy still got prestolite ignition?

Does mr. Coil have an internal resistor or is it one that requires external resistance?

What kinda plugs do you have?

Has the distributor been taken out? Sure it's back in right?

Do you have part numbers and where it came from?

How 'bout a digital voltmeter if we need to test stuff?

The medic
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Saturday, July 13th, 2019 AT 11:45 AM (Merged)
Tiny
JAYBOT
  • MEMBER
  • 19 POSTS
  • 1979 JEEP CJ7
  • 100,000 MILES
I have a 79 cj7 that started and ran prior to my problem. Now it wont start.I get spark out of the coil, but seams intermittent or no spark from the distributor. What took place, I replaced the head gasket and put in a new cam, lifters and timing kit. I put it back together and now no spark. There is a new cap and rotor, wires and plugs, even changed out the pick up coil inside the distributor.I have gotten spark a few times while trying to time it, while other times no spark. Always have spark to the coil but not past. Any ideas? What am I missing?
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Saturday, July 13th, 2019 AT 11:45 AM (Merged)
Tiny
0H CANADA
  • MEMBER
  • 18 POSTS
Yes, I believe that's it, but I think the part needed is #39; but not sure. Actually the Quadratec catalogue, or Chilton's has a more detailed blow-up diagram.

Have you had much experience pulling the shifter and replacing parts there? If so, is it difficult? Or more simple as pulling up the Shifter Cover Plate, and removing the shifter and parts? Or, is the shifter embedded within the Tranny? The shifter just feels so lose, and sloppy.

Not sure of my time frame as to when I will tackle, but would like to get it done this fall. Going overseas for a bit September 4.
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Saturday, July 13th, 2019 AT 11:45 AM (Merged)
Tiny
JAYBOT
  • MEMBER
  • 19 POSTS
*correction.
I have spark from the coil to the distributor but not past the distributor
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Saturday, July 13th, 2019 AT 11:45 AM (Merged)
Tiny
OZZIE62G
  • MEMBER
  • 30 POSTS
Yes the distributor has been taken out but I put it back top it center in the timing is correct the problem that I'm having is that from the coil wire to the distributor center of the cap There's no spark yes it's the Prestolite system and the spark plugs are Autocraft. It does not have an external resistor. I can tell you this that at one point while I was moving the distributor there was a point where the spark plugs did have spark but I was never able to duplicate it. Cj medavac I actually read your comments of a similar situation you had with the gentleman from South Carolina I believe that he changed his EMC and everything started working for him on his CJ. As far as the distributor it was a rebuilt I believe it was the CarboneA1 and it is the Prestolite distributor. Thank you for responding can use all the help you can give me
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Saturday, July 13th, 2019 AT 11:45 AM (Merged)
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Just a start but is the distributor turning when cranking?

Roy
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Saturday, July 13th, 2019 AT 11:45 AM (Merged)
Tiny
OZZIE62G
  • MEMBER
  • 30 POSTS
Just to clarify the coil dose have spark but it seems that the coil wire that runs to the cap doesn't :/
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Saturday, July 13th, 2019 AT 11:45 AM (Merged)
Tiny
JAYBOT
  • MEMBER
  • 19 POSTS
Yes, it does turn.I just tested that again
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Saturday, July 13th, 2019 AT 11:45 AM (Merged)
Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
Have you tried another coil wire?
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Saturday, July 13th, 2019 AT 11:45 AM (Merged)
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Ok, and nothing to the plugs? Is the rotor ok? No hole in the center where it could be grounding?

Roy
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Saturday, July 13th, 2019 AT 11:45 AM (Merged)
Tiny
OZZIE62G
  • MEMBER
  • 30 POSTS
Yes, I keep thinking if it is the ECU and if it is I'm thinking it my be more cost effective to switch over to a HEI Distributor?
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Saturday, July 13th, 2019 AT 11:45 AM (Merged)
Tiny
TONY KOLB
  • MEMBER
  • 5 POSTS
  • 1981 JEEP CJ7
  • 4 CYL
  • 4WD
  • MANUAL
  • 67,000 MILES
I have replaced the entire distributor, coil, module in the distributor, plugs, wires, cap, and rotor and still no spark.
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Saturday, July 13th, 2019 AT 11:45 AM (Merged)
Tiny
JAYBOT
  • MEMBER
  • 19 POSTS
Rotor and cap look good. New. Just tried to fire again, nut the spark comes and goes. Im testing with an inline tester. Was sparking now its not
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Saturday, July 13th, 2019 AT 11:45 AM (Merged)
Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
I'll explain this again.

If you have spark at the output of the coil, the ignition system is working up to the coil wire and distributor cap. You need to try another coil wire and use a spark tester to actually measure the strength of the spark.
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Saturday, July 13th, 2019 AT 11:45 AM (Merged)

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