Slant Six Forum :: Help with ignition system

Yes that‘s right. Should be no problem to get there..

its that blue box on the firewall

Checked not an ignition issue

Quote:

Checked not an ignition issue

Did you check for spark when it is not starting? I know, a dumb question.

The pick up in the distributor could be bad?
Get a cheap HEI module and a couple pieces of wire and you will know the ignition module is OK. You already have a new coil. Not much else left.

Quote:

Checked not an ignition issue

Here is a very simple diagram on how to hook up an HEI module. This will get you started. There are whole articles and lots of more complicate set ups. But this works and is simple.

https://www.ramchargercentral.com/attac ... jpg.11321/

Below is testing method for the distributor pick up. Make sure the gap is right

Got NO spark???

Grab your digital volt meter... set it to 2K ohms.. disconnect the 2 wire plug at the distributer. you should have around 800 ohms. give or take.. anywhere between 600 and 1,500 ohms is usually ok.

Before you disconnect the volt meter. flip the setting to 2 volts AC or 20 volts AC range... crank the engine if the distributor is in.. spin the shaft if it is out... for the system to work. you need to see over 1 volt AC.

If the pick up coil passes it's resistance test... the gap is correct ,,, replace the reluctor.

The reluctor keeps a small amount of magnetic field.. so as it passes the pick up coil AC voltage is created to trigger the ignition module
It takes about 0.6 volts AC to turn the power transistor on. if the pick up coil does not create enough voltage... the power transistor will not have enough voltage to turn on.. if its not on.. it cannot switch off discharging the coil primary...

testing the pickup coil takes only a few minutes.. testing the reluctor, a few seconds more...
Rusty reluctors don't work well, sand blasted reluctors don't work well... if at all... sometimes they just go bad... this is the only test to be sure... other than sticking a new one in..

Hope this helps explain some of the hidden magic in the ignition system...

I have spark ill replace the pick up and reluctor since they look worn

Quote:

I have spark ill replace the pick up and reluctor since they look worn

Why replace these parts? If you have spark they are functioning. I can't understand what you are doing. If you have spark, the ign system is working. If you have sprk at the plugs, the only ign issue would be not having spark at the correct time. If you have spark at the coil wire but not at the plugs, it would be an issue with cap, rotor, or wires.

Quote:

I have spark ill replace the pick up and reluctor since they look worn

I have spark at the plugs

Author:	Slantsix83 [ Tue May 24, 2022 7:43 am ]
Post subject:	Re: Help with ignition system
Quote: Yes that‘s right. Should be no problem to get there.. New coil that's not the issue. Could it be the ignition? How can a jump the truck from inside the hood. I saw something about connecting the positive terminal battery to the starter signal wire but which one is that. Is that the one that's connected on the side of the starter with a washer a nut. Or is it the one on the top

Author:	Slantsix83 [ Tue May 24, 2022 8:49 am ]
Post subject:	Re: Help with ignition system
Quote: Yes that‘s right. Should be no problem to get there.. Checked not an ignition issue. Does the slant six have a ecu? Could the ecu be bad

Author:	volaredon [ Tue May 24, 2022 4:17 pm ]
Post subject:	Re: Help with ignition system
its that blue box on the firewall

Author:	Slantsix83 [ Tue May 24, 2022 5:01 pm ]
Post subject:	Re: Help with ignition system
Quote: its that blue box on the firewall Anyway to test it?

Author:	Rick Covalt [ Tue May 24, 2022 6:25 pm ]
Post subject:	Re: Help with ignition system
Quote: Checked not an ignition issue Did you check for spark when it is not starting? I know, a dumb question. The pick up in the distributor could be bad? Get a cheap HEI module and a couple pieces of wire and you will know the ignition module is OK. You already have a new coil. Not much else left.

Slant Six Forum https://slantsix.org/forum/

Help with ignition system https://slantsix.org/forum/viewtopic.php?t=66535	Page 2 of 3

Author:	Slantsix83 [ Tue May 24, 2022 6:54 pm ]
Post subject:	Re: Help with ignition system
Quote: Quote: Checked not an ignition issue Did you check for spark when it is not starting? I know, a dumb question. The pick up in the distributor could be bad? Get a cheap HEI module and a couple pieces of wire and you will know the ignition module is OK. You already have a new coil. Not much else left. The pick up are the connection coming out of the distributor correct?

Author:	Slantsix83 [ Tue May 24, 2022 6:55 pm ]
Post subject:	Re: Help with ignition system
Quote: Quote: Checked not an ignition issue Did you check for spark when it is not starting? I know, a dumb question. The pick up in the distributor could be bad? Get a cheap HEI module and a couple pieces of wire and you will know the ignition module is OK. You already have a new coil. Not much else left. Install the HEI module with wires or what am I doing exactly

Author:	Rick Covalt [ Wed May 25, 2022 3:28 am ]
Post subject:	Re: Help with ignition system
Here is a very simple diagram on how to hook up an HEI module. This will get you started. There are whole articles and lots of more complicate set ups. But this works and is simple. https://www.ramchargercentral.com/attac ... jpg.11321/ Below is testing method for the distributor pick up. Make sure the gap is right Got NO spark??? Grab your digital volt meter... set it to 2K ohms.. disconnect the 2 wire plug at the distributer. you should have around 800 ohms. give or take.. anywhere between 600 and 1,500 ohms is usually ok. Before you disconnect the volt meter. flip the setting to 2 volts AC or 20 volts AC range... crank the engine if the distributor is in.. spin the shaft if it is out... for the system to work. you need to see over 1 volt AC. If the pick up coil passes it's resistance test... the gap is correct ,,, replace the reluctor. The reluctor keeps a small amount of magnetic field.. so as it passes the pick up coil AC voltage is created to trigger the ignition module It takes about 0.6 volts AC to turn the power transistor on. if the pick up coil does not create enough voltage... the power transistor will not have enough voltage to turn on.. if its not on.. it cannot switch off discharging the coil primary... testing the pickup coil takes only a few minutes.. testing the reluctor, a few seconds more... Rusty reluctors don't work well, sand blasted reluctors don't work well... if at all... sometimes they just go bad... this is the only test to be sure... other than sticking a new one in.. Hope this helps explain some of the hidden magic in the ignition system...

Author:	Rick Covalt [ Wed May 25, 2022 3:35 am ]
Post subject:	Re: Help with ignition system
More info here https://www.slantsix.org/forum/viewtopic.php?t=15779

Author:	Slantsix83 [ Wed May 25, 2022 8:29 am ]
Post subject:	Re: Help with ignition system
Quote: Here is a very simple diagram on how to hook up an HEI module. This will get you started. There are whole articles and lots of more complicate set ups. But this works and is simple. https://www.ramchargercentral.com/attac ... jpg.11321/ Below is testing method for the distributor pick up. Make sure the gap is right Got NO spark??? Grab your digital volt meter... set it to 2K ohms.. disconnect the 2 wire plug at the distributer. you should have around 800 ohms. give or take.. anywhere between 600 and 1,500 ohms is usually ok. Before you disconnect the volt meter. flip the setting to 2 volts AC or 20 volts AC range... crank the engine if the distributor is in.. spin the shaft if it is out... for the system to work. you need to see over 1 volt AC. If the pick up coil passes it's resistance test... the gap is correct ,,, replace the reluctor. The reluctor keeps a small amount of magnetic field.. so as it passes the pick up coil AC voltage is created to trigger the ignition module It takes about 0.6 volts AC to turn the power transistor on. if the pick up coil does not create enough voltage... the power transistor will not have enough voltage to turn on.. if its not on.. it cannot switch off discharging the coil primary... testing the pickup coil takes only a few minutes.. testing the reluctor, a few seconds more... Rusty reluctors don't work well, sand blasted reluctors don't work well... if at all... sometimes they just go bad... this is the only test to be sure... other than sticking a new one in.. Hope this helps explain some of the hidden magic in the ignition system... I have spark ill replace the pick up and reluctor since they look worn

Author:	Charrlie_S [ Wed May 25, 2022 8:38 am ]
Post subject:	Re: Help with ignition system
Quote: I have spark ill replace the pick up and reluctor since they look worn Why replace these parts? If you have spark they are functioning. I can't understand what you are doing. If you have spark, the ign system is working. If you have sprk at the plugs, the only ign issue would be not having spark at the correct time. If you have spark at the coil wire but not at the plugs, it would be an issue with cap, rotor, or wires.

Author:	Slantsix83 [ Wed May 25, 2022 9:53 am ]
Post subject:	Re: Help with ignition system
Quote: Quote: I have spark ill replace the pick up and reluctor since they look worn Why replace these parts? If you have spark they are functioning. I can't understand what you are doing. If you have spark, the ign system is working. If you have sprk at the plugs, the only ign issue would be not having spark at the correct time. If you have spark at the coil wire but not at the plugs, it would be an issue with cap, rotor, or wires. I have spark at the plugs

Author:	Charrlie_S [ Wed May 25, 2022 9:55 am ]
Post subject:	Re: Help with ignition system
Quote: Quote: Quote: I have spark ill replace the pick up and reluctor since they look worn Why replace these parts? If you have spark they are functioning. I can't understand what you are doing. If you have spark, the ign system is working. If you have sprk at the plugs, the only ign issue would be not having spark at the correct time. If you have spark at the coil wire but not at the plugs, it would be an issue with cap, rotor, or wires. I have spark at the plugs Then why are you fooling with the ign system?

Author:	volaredon [ Wed May 25, 2022 1:26 pm ]
Post subject:	Re: Help with ignition system
I don't think I have ever seen a reluctor bad unless it was chipped up or something by someone being rough taking it off

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Author:	Rick Covalt [ Wed May 25, 2022 4:31 pm ]
Post subject:	Re: Help with ignition system
Charlie is right. If you have spark at the plugs, the ignition system is working. If you give it a good shot of starting fluid does it try and start?