Spark coming out of coil but does not come out of distributor

Tiny
MANDOCJ7
  • MEMBER
  • 1984 JEEP CJ7
  • 4.2L
  • 6 CYL
  • 4WD
  • MANUAL
  • 81,000 MILES
To the medic.
I have spark coming out of my coil but not my distributor. I replaced my ICM and replaced my diss for a working use one and still not firing up?
Wednesday, August 28th, 2019 AT 8:30 PM

16 Replies

Tiny
PATENTED_REPAIR_PRO
  • MECHANIC
  • 1,853 POSTS
Check the distributor cap rotor button for being burnt up.
Check the rotor itself, too.
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Thursday, August 29th, 2019 AT 2:50 AM
Tiny
CJ MEDEVAC
  • MECHANIC
  • 11,004 POSTS
You replaced the distributor?

Are you 100% confident on how you installed it?

I can send you a "CJ MEDEVAC" version on how I do it if you like or have doubts.

Explain how you are seeing/ getting the spark from the coil.

The Medic
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Thursday, August 29th, 2019 AT 5:25 PM
Tiny
MANDOCJ7
  • MEMBER
  • 36 POSTS
If you could send it.I connect a spark plug to the coil and crank it and there is spark coming out of the coil I do the same test on the distributor and nothing.
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Thursday, August 29th, 2019 AT 10:44 PM
Tiny
CJ MEDEVAC
  • MECHANIC
  • 11,004 POSTS
Okay.

Read this a couple of times before you jump in!

if we got carried away bumping the starter - this way (below) will cut out possible "going too far with the timing marks.

let's do it to slow motion.

hide your keys/chock your wheels/ go to neutral.

remove #1 spark plug.

stick it back in , maybe 2 threads (instead of using your thumb).

rotate the engine with a wrench or ratchet (not the starter).

clockwise as viewed from the grill.

when you hear the "hiss" coming by #1 plug=-=-=stop! ( a friend may be helpful to hear this at #1 (as the other cylinders hiss internally (usually fainter) when you rotate the engine manually.

now, we are on/ beginning the compression stroke on #1 cylinder (piston is still coming up).

we are not done yet!

ever so slowly rotate the engine (cw) till your timing mark (line) lines up with zero!

stop! !

i have found that using the starter for the "bum-page" usually results in "overrunning" the marks, compression kicks it back, etc.

then you mistakenly rotate on around 180 degrees from where you should be (not saying bad things, but if you are new to this, it's an easy mistake!).

okay, back to our slow-motion-age!

now look at the rotor button it should be facing the "mark" you put on the distributor or which ever tower you chose to be #1 (textbook or not).

the engine/ cam/ crank don't care which one it is!

as long as you were at TDC, you placed #1 spark plug wire on "that tower" (the one that rotor is pointing to)

and your 1-5-3-6-2-4 firing order starts there- and runs the sequence clockwise (looking down on the 'stributor cap)

installing it "textbook" cuts down on confusion later on, as you may have forgotten the "deal"- simply hooking it all up like it shows in the book will make it easier in 8 months! (but you gotta install it textbook now!)

These may also help you understand what is going on:

CLASS 1

http://www.youtube.com/watch?v=5a2X9mSSlQY

CLASS 2

http://www.youtube.com/watch?NR=1&v=FHX1yXVyIMg&feature=endscreen

Lets hears some good information!

Ask if you need to, that's what we do here!

XTDC

The Medic
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Friday, August 30th, 2019 AT 3:48 PM
Tiny
MANDOCJ7
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  • 36 POSTS
Could it be one of this relays?
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Friday, August 30th, 2019 AT 6:16 PM
Tiny
MANDOCJ7
  • MEMBER
  • 36 POSTS
Relays what are this for?
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Friday, August 30th, 2019 AT 6:20 PM
Tiny
MANDOCJ7
  • MEMBER
  • 36 POSTS
Is this a good reading?
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Friday, August 30th, 2019 AT 6:31 PM
Tiny
CJ MEDEVAC
  • MECHANIC
  • 11,004 POSTS
Lets try this.

Positive battery to positive coil.

Crank it up with the key as usual.

Turn it off it by removing battery side.

The Medic
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Saturday, August 31st, 2019 AT 12:41 PM
Tiny
MANDOCJ7
  • MEMBER
  • 36 POSTS
Okay, what am I looking for here see if it goes on?
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Saturday, August 31st, 2019 AT 3:16 PM
Tiny
MANDOCJ7
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  • 36 POSTS
That’s how the distributor look like inside.
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Saturday, August 31st, 2019 AT 3:17 PM
Tiny
MANDOCJ7
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  • 36 POSTS
Here it is:
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Saturday, August 31st, 2019 AT 3:18 PM
Tiny
CJ MEDEVAC
  • MECHANIC
  • 11,004 POSTS
I think you have tried this. See 2 pictures below.

Did you check/recheck the way your distributor is installed?

The Medic
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Saturday, August 31st, 2019 AT 3:40 PM
Tiny
MANDOCJ7
  • MEMBER
  • 36 POSTS
Yes, I have tried that and is 006.
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Saturday, August 31st, 2019 AT 5:12 PM
Tiny
MANDOCJ7
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  • 36 POSTS
But I will double triple check everything tomorrow. Will let you know how it goes. Thanks for the help so far the medic.
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Saturday, August 31st, 2019 AT 5:15 PM
Tiny
MANDOCJ7
  • MEMBER
  • 36 POSTS
Hey there Medic. I tried it already the positive on the positive coil nothing happens and I also re check my timing marks and they are good I get 005 and 006 on the dis for Continuation.
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Monday, September 2nd, 2019 AT 1:03 PM
Tiny
CJ MEDEVAC
  • MECHANIC
  • 11,004 POSTS
As it looks from here.

Either your ignition module case is not grounded well to the fender.

Or it is defective.

Or the distributor is not dropped into TDC.

How about a picture of your ignition module. I really want to see the wires and connectors that attach to it. Insure they all show well in the pictures.

The Medic
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Monday, September 2nd, 2019 AT 4:16 PM

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