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12-20-2008, 06:52 PM
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#1
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Registered User
Join Date: Sep 2008
Location: pomona,ca
Posts: 18
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No spark from distributor to spark plugs
I recently purchased a 1976 cj5 and couldnt get any spark at the wires. i have now replaced the ignition module and i am getting a strong spark from the coil. i have also replaced the magnetic pickup in the distributor and still no spark at the wires. i cant figure it out!!!  PLEASE HELP!!!
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12-20-2008, 09:10 PM
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#2
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Moderator
Join Date: Feb 2005
Location: Shalersville Ohio
Posts: 10,843
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Is the rotor inside the distributor. Have you verified the rotor turns. he rotor could be shorting out also.
Do you still have the presotlight ignition installed?
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12-20-2008, 11:48 PM
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#3
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Registered User
Join Date: Sep 2008
Location: pomona,ca
Posts: 18
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yes, it is still installed, i bought a new distributor cap and the new rotor came with it, i have went through every pissible connection and wire brushed them so i know it is not corrosion or calcium deposits. .
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12-21-2008, 06:26 AM
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#4
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Moderator
Join Date: Feb 2005
Location: Shalersville Ohio
Posts: 10,843
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Quote:
Originally Posted by poolshark909
yes, it is still installed, i bought a new distributor cap and the new rotor came with it, i have went through every pissible connection and wire brushed them so i know it is not corrosion or calcium deposits. .
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I like that.... It's probably not a typo.. 
Still check to make sure it turns in there.
Are you using a spark checker to see if you havea spark at the plugs? Sometimes trying to hold it to the plug to see if it jumps from the end won't work.
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12-21-2008, 12:12 PM
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#5
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Running On Empty...
Join Date: Aug 2007
Location: South West Indiana
Posts: 9,326
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Quote:
Originally Posted by poolshark909
I recently purchased a 1976 cj5 and couldnt get any spark at the wires. i have now replaced the ignition module and i am getting a strong spark from the coil. i have also replaced the magnetic pickup in the distributor and still no spark at the wires. i cant figure it out!!! PLEASE HELP!!! |
*IF* you are getting 'Strong Spark' from the coil EVERY TIME THE DISTRIBUTOR TRIGGERS THE MODULE...
that means the COIL WIRE, DISTRIBUTOR CAP, OR ROTOR isn't transmitting the spark energy like it's supposed to.
I've found MANY distributor caps and coil wires that are 'BAD' right out of the box, so it doesn't surprise me.
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Pull one of the spark plug wires off the distributor cap,
Plug it into the coil,
Put an old spark plug in the other end,
Wrap a wire around the threads of the old spark plug,
And ground the other end of the wire to make a 'Test Plug'...
(ELECTRONIC IGNITIONS, EVEN A PRESTOLITE, SHOULD NEVER BE 'DRY FIRED' WITH NO GROUND FOR THE SPARK PATH!
You WILL kill the coil and potentially the module if you keep cranking the engine with no ground path for the spark energy!)
If you get a fire every time the distributor triggers,
then you have a coil wire, distributor cap, or rotor problem.
(distributor cap doesn't need to be on when you have a test plug directly attached to the coil)
__________________
REMEMBER,
'Free' internet information is worth EXACTLY what you paid for it!
LINK: BASIC WIRING 101.
LINK: Dual Battery Diagrams & Explanations.
LINK: Winch, Welding, 'Lend Power' Project,
LINK: Water Proofing Ignition, Hubs, Ect.,
LINK: Small Cap 'HEI' V-8 Distributor.
LINK: Low Budget Fuel Injection Distributor,
LINK: AMC V-8 Front Cover Recondition,
LINK: Tuning An AMC V-8,
LINK: Ignition Swaps '77 Older Jeeps,
LINK: '78-'90 Jeep Ignition Upgrades,
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12-21-2008, 01:24 PM
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#6
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Registered User
Join Date: Dec 2004
Location: Warner Robin, GA
Posts: 389
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__________________
USN Jeep Club Hull #1
CJ Forum
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12-22-2008, 10:46 AM
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#7
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Registered User
Join Date: May 2007
Location: Pemberton, NJ
Posts: 520
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Mine was doing this, it was the drive gear on the distributor. It was stripped.
__________________
'85 CJ7, 258 4.2 Howell TBI, NP435, twin sticked Dana300, 4.56 Yukon chromoly: Rear20-extra thick tubes, shaved,trussed,discbrakes,ARB: Front30- flipped tierod,Detroit EZ locker, warn hubs: 3.5" BDS YJ springs and booster, 35" Trxus M/T's, rhino'd, full roll cage, borgenson steering shaft, big daddy steering box bracket...Unknown OIL Leak(working on it...)
FOR SALE $6000
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12-22-2008, 12:57 PM
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#8
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Running On Empty...
Join Date: Aug 2007
Location: South West Indiana
Posts: 9,326
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Quote:
Originally Posted by BrockGrimes
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Guess this guy is new to things...
I AM 'TeamRush' and I developed this upgrade you link to for the Jeep community....
And I'm currently answering some questions for Terry Mason as we speak.
------------------------------
Secondly,
This is a '76, so it has the Prestolite ignition.
There is NO UPGRADE for a Prestolite ignition.
----------------------------------------
__________________
REMEMBER,
'Free' internet information is worth EXACTLY what you paid for it!
LINK: BASIC WIRING 101.
LINK: Dual Battery Diagrams & Explanations.
LINK: Winch, Welding, 'Lend Power' Project,
LINK: Water Proofing Ignition, Hubs, Ect.,
LINK: Small Cap 'HEI' V-8 Distributor.
LINK: Low Budget Fuel Injection Distributor,
LINK: AMC V-8 Front Cover Recondition,
LINK: Tuning An AMC V-8,
LINK: Ignition Swaps '77 Older Jeeps,
LINK: '78-'90 Jeep Ignition Upgrades,
Last edited by JeepHammer; 12-22-2008 at 01:39 PM..
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12-24-2008, 11:12 PM
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#9
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Registered User
Join Date: Sep 2008
Location: pomona,ca
Posts: 18
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Yay!!!!!!!!!!!
well thanks for the advice everyone, i ended up just replacing the wires and adjusted the distributor, IT LIVES!!!!!!!!: 
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12-24-2008, 11:38 PM
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#10
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Running On Empty...
Join Date: Aug 2007
Location: South West Indiana
Posts: 9,326
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Must be a Christmas miracle! 
Glad to hear it's running!
__________________
REMEMBER,
'Free' internet information is worth EXACTLY what you paid for it!
LINK: BASIC WIRING 101.
LINK: Dual Battery Diagrams & Explanations.
LINK: Winch, Welding, 'Lend Power' Project,
LINK: Water Proofing Ignition, Hubs, Ect.,
LINK: Small Cap 'HEI' V-8 Distributor.
LINK: Low Budget Fuel Injection Distributor,
LINK: AMC V-8 Front Cover Recondition,
LINK: Tuning An AMC V-8,
LINK: Ignition Swaps '77 Older Jeeps,
LINK: '78-'90 Jeep Ignition Upgrades,
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No spark from distributor to spark plugs
