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No SPARK after changing rotor, ignition coil cap & button

No SPARK after changing rotor, ignition coil cap & button

Old March 14th, 2019, 08:55 AM
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No SPARK after changing rotor, ignition coil cap & button

Hello all my 307 Oldsmobile Delta 88 1984 cranks very well but all of a sudden had no spark. I just replaced the cap, rotor, ignition coil and button but still no spark any ideas what I should look at next?
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Old March 14th, 2019, 10:06 AM
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Originally Posted by Stephen0523 View Post
Hello all my 307 Oldsmobile Delta 88 1984 cranks very well but all of a sudden had no spark. I just replaced the cap, rotor, ignition coil and button but still no spark any ideas what I should look at next?
With key on make sure you have 12v at the coil lead on distributer cap. Look for cracked wire on pick up coil in distributer.
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Old March 14th, 2019, 10:06 AM
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Put the old parts back on & see if it starts. New parts can be defective
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Old March 14th, 2019, 10:16 AM
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Originally Posted by Oldsmaniac View Post
With key on make sure you have 12v at the coil lead on distributer cap. Look for cracked wire on pick up coil in distributer.
I Oldsmaniac I Old maniac is there a video or any kind of visual direction to help me with the instructions you just gave me?
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Old March 14th, 2019, 11:58 AM
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Check Youtube for GM HEI
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Old March 14th, 2019, 06:27 PM
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If you look at the top of the cap where the wires plug into underneath, there are 2 markings. 1 is for batt (coil+) the other is tach (coil-). See if you have power at the Battery+ terminal wire with the key on.
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Old March 15th, 2019, 06:18 AM
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Any chance you left out the coil contact that goes between the coil & the cap? (kinda bent up wire lower right corner of the pic)
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Old March 15th, 2019, 02:23 PM
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I have everything installed except Circled in red attached.
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Old March 15th, 2019, 03:38 PM
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There's your problem. That's the ground connection.
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Old March 15th, 2019, 03:51 PM
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LOL I thought the ground was the little black wire that was screwed down to the coil. I just checked for 12 V when the key is in the on position and I do have 12 V I will have a look at the coil instructions to see how that piece I left out sits in there.
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Old March 15th, 2019, 04:03 PM
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Well I put that extra grounding wire on and cracked her over but all I smell is gas Iím pretty sure theyíre still no spark I didnít have time to check the plug for spark
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Old March 15th, 2019, 07:56 PM
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lets clarify this.the way it sounds it was working fine,til one day you went to start it and no spark,so you decided to start with the cap,rotor and coil??my guess would be the module took a dump.or as mentioned a wire on the pickup coil.
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Old March 15th, 2019, 08:31 PM
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Originally Posted by Stephen0523 View Post
LOL I thought the ground was the little black wire that was screwed down to the coil.
So how does that black wire get connected to the vehicle ground (battery negative)?

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Old March 15th, 2019, 09:10 PM
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Did you try advancing the distributor a bit while someone cranks the engine?
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Old March 16th, 2019, 07:25 AM
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Hi olds cutlass, I have not tried advancing the distributor. That would not resolve why there is no spark? I think I may replace the module & the little diode
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Old March 16th, 2019, 07:28 AM
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Sorry I thought you fixed the no spark issue but it still would not fire.
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Old March 16th, 2019, 07:30 AM
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Sorry, still no spark. I have 12V on the coil, but the module and diode looks rough, never been replaced, so that will be the next step.
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Old March 16th, 2019, 02:42 PM
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make sure you put the grease under the module before you put it in.
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Old March 16th, 2019, 03:50 PM
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Grease under the Module, hmmm, it was dry as a bone. The 2 part shown (The Ignition Module and the diode will be replaced next)


.
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Old March 16th, 2019, 07:05 PM
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there should be a little grease pack with the new module,its for heat transfer,
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Old March 16th, 2019, 09:14 PM
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You don't need a lot of the heat sink compound on the back of the module. The silver can is not a diode its a capacitor.
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Old March 17th, 2019, 06:35 AM
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Different prices on these modules.
Anyone know what would be the best? Is more money better?

https://www.summitracing.com/int/sea...keyword=module

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Old March 17th, 2019, 04:53 PM
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Not necessarily, go with the DUI or the A/C Delco.
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Old March 17th, 2019, 07:39 PM
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Agreed, quality brand vs price. Also note some of those are 7 pin modules for CCC systems.
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Old March 17th, 2019, 09:21 PM
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I like the DUI module myself. However A/C delco, Accel are just as good.

Eric
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Old March 19th, 2019, 08:16 PM
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capacitor & module ordered. Fingers crossed she starts!
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