Technical Electronic ignition

no problem chopped .

 

Danny I have no experience with HEIs. But I do have experience with Pertronixs. Very reliable and easy to use. I have one in my Roadster and one in my Falcon. Both are inside Mallory dual point dizzys. What you are describing is Thermal breakdown. A new module should cure it.
Good Luck

 

David,like you I don't know anything about these things ether.

This is what I have for better or worse. HRP



Is this what you guys are talking about?.

 

You can take the module to the parts store and have it tested.

 

That's what I need to hear!,,thanks man. HRP

 

Have them test it several time it will heat it up if it fails when it gets hot.

 

If you need to replace it pays to get the real thing from GM, cheap ones are garbage.


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Did you wipe the white grease off the bottom of it? should be a heavy coating there. That's really all you need to worry about as far as installation...oh, make sure the wires are plugged on firmly.


I don't have any recommendations for brands, I can't even recommend GM stuff any more, they don't make it like they used to. All I can suggest is that you keep a spare module with you, if only to satisfy Mr. Murphy (if you have a spare, you won't need it)

 

Yeah Jim,I wiped of the heavy coating of white grease off

Murphy has been tailing me lately so I know what you mean! HRP

 

Hopefully a new module gets you back on the road.

 

those modules can fail ANYTIME! man if yours is sputtering consider yourself lucky because it's saying "CHANGE ME" or your gonna change me along the road and it will be 100 degrees or raining!i alway carry a spare and tools to swap it out.

 

Id start at the basics before throwing parts. If its missing on idle pull wires and check for a change. If no change thats the cylinder. Then u can swap a plug cylinder to cylinder and see if it follow or even try moving wires around. Thats just how id do it. Good luck!


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You can troubleshoot with canned air.turn it upside down and it sprays a ice cold spray.good for checking thermal problems in electronic ignitions.Also Heat sink compound ios what u need on the underside of the module.you can get it at radio shack!

 

only good ones I have run into anymore are accel or Blue standard , and the accel ones are only better for the High rpm ( over 4500) as it doesn't retard like the OEm ones do

 

I have had very good luck with the distributors modified by HAMB member GMC BUBBA http://www.lindertech.com/bhrs/services.htmnd and Dave's Small Body HEIs http://www.davessmallbodyheis.com/ . They take an old points distributor, toss the points and add a Chrysler reluxor and GM hei module. They require a separate HEI coil.

 

I'm thinking pick up coil is going bad.....

 

Back to square one....

The module check out OK but I put a new one in anyway,I also put in a new rotor*****on,the wires are not crossed and all the plugs are good.

The distributor is tight..I fired the car up and it's still spitting and sputtering and cuts off. HRP

 

check the cap for carbon tracking ( hard to do with a black cap that s why I like the blue or tan ones ) as if there is any of the red dust ( ozoned metal) it will make carbon tracks easily in the unit also try not to use a aluminum post cap as the aluminum over times develops a oxide on the terminals and can cause cross firing issues or missing from the burned off bits . the brass term caps will last 4x as long too .

 

Might check the voltage at the distributor B terminal, make sure it's getting full battery voltage when it's running bad. Someone mentioned the pickup coil possibly getting flaky, too.

And we all know that 95% of carb problems are caused by the ignition...but it works the other way, too

 

Sorry about that ,I omitted that I also have a new cap. HRP

 

Well,the coil pack is the only thing that I haven't changed. HRP

 

a old 70's chilton manual has the ohm specs in it and the wire colors do mean something ( yellow or white) it has to do with magnatism and the way its wound , but chevy is 95% red and white wires .

 

Fuel system and carb ok? Valve rocker clearances ok? Is it possible that you lunched a cam lobe? Any audible evidence of a collapsed lifter?

 

It may have been mentioned, but go over the wires and plugs that plug on to the pickup coil and module. Had one coming of one end of a module that was broke inside the insulation, intermittent miss. Like to never found it.

 

Heat paste can be bought at Radio Shack.

Ago

 

GM ( Delco) no longer makes a good one either !! All are off shore units ...

 

HRP, have you put a timing light on it to see if it is missing sparks? that is quick and easy! I would also bet on the pickup coil being the problem. Gary

 

I have had a weak coil that would let the motor idle but would then break up under load and rpm.

 

could also check your engine ground.

 

Not trying to insult you but this seems like a perfect time to get rid of that ugly thing. I bet GMC Bubba can build you a nice electronic window points dist. Modern ign. and a pretty case. Your dist. is ugly! there I said it sorry.