desprate for advice!!!
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Elder User
Joined: Jun 2010
Posts: 677
Likes: 2
From: High Point NC
desprate for advice!!!
i have a skip in my ignition ( i know its ignition becouse you can hook up the timeing light and watch it) the ignition module is just over a year old, along with the coil. the cap and rotor button were replaced today. the skip is getting progresively worse as weeks go by and its my only vehicle.
its a 76 f-350 with the 360 and factory electronic ignition
its a 76 f-350 with the 360 and factory electronic ignition
Postmaster
Joined: Dec 2008
Posts: 3,940
Likes: 8
From: Southern Oregon Coast
In short, the 3 stages of a Duraspark module failure are:
1) Truck dies and immediately starts back up again.
2) Truck dies and doesn't start until module cools down.
3) Truck dies and doesn't restart - module's dead.
I also carry a spare - it's on the 1st stage of failure, but I figure it's good enough for emergencies...
1) Truck dies and immediately starts back up again.
2) Truck dies and doesn't start until module cools down.
3) Truck dies and doesn't restart - module's dead.
I also carry a spare - it's on the 1st stage of failure, but I figure it's good enough for emergencies...
Laughing Gas
Joined: Dec 2003
Posts: 900
Likes: 3
i have a skip in my ignition ( i know its ignition becouse you can hook up the timeing light and watch it) the ignition module is just over a year old, along with the coil. the cap and rotor button were replaced today. the skip is getting progresively worse as weeks go by and its my only vehicle. its a 76 f-350 with the 360 and factory electronic ignition
its a 76 f-350 with the 360 and factory electronic ignitionHave you tried a fresh set of sparkplugs?
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Elder User
Joined: Jun 2010
Posts: 677
Likes: 2
From: High Point NC
wel i gues il go out and get another module tomorow but the truck starts realy easy and will run as long as you can keep gas in it (lol) but it skips, and it isnt a consistant skip its almost randomized, it also realy shows up at higher rpm, il try to get a video tomoro i realy need to ge this thing going 100%
Laughing Gas
Joined: Dec 2003
Posts: 900
Likes: 3
If you see the timing jumping around, it could be from wear in the timing chain or distributor bushings.
I gotta admit, I have a spare module in my truck as well.
I'll mention this just for giggles, I once had a "no start" problem that occured intermittenly. I finally found a broken wire on the pickup coil under the vac advance plate in the distributor.
I gotta admit, I have a spare module in my truck as well.
I'll mention this just for giggles, I once had a "no start" problem that occured intermittenly. I finally found a broken wire on the pickup coil under the vac advance plate in the distributor.
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Elder User
Joined: Jun 2010
Posts: 677
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From: High Point NC
yes the plugs are less than a month old, im beginning to beleive its in module or the wireing between the distributor and the module, the distributor, wireing harness and module are the only things that havnt been replaced
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MSEE
Joined: Apr 2004
Posts: 10,386
Likes: 35
From: Austin, TX
It's also possible the pickup module in the distributor is on its way out. This is the sensor that tells the ignition module when to fire the coil. It's just as guilty as the ignition module but is commonly overlooked. You can check it for an open or short by disconnecting the distributor and measuring the resistance between the ORANGE and PURPLE wires at the distributor. The resistance should be between 400 and 700 ohms. However, chances are the issue is heat-related, and won't show up in steady-state. Measuring the resistance doesn't really tell you much since the pickup module is a Hall effect sensor and is not purely resistive, but it will identify catastrophic failures.
Posting Guru
Joined: Jul 2009
Posts: 1,536
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From: Schweinfurt Germany
Also if you aren't 100% positive take in your module I used to test them all the time for people I would say 6 outa 10 times it was the module but hey theres style that other 4. If you have a big name parts store around they should be able to check it for free. I know checkers shucks and kragan all used to before Oreilly's bought em out and my Oreilly's will still happily check em out.
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Elder User
Joined: Jun 2010
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From: High Point NC
ok guys heres what happened, i decided to replace the distributer and in removeing the old one the oil pump driveshaft stayed in the end of the distributer shaft and before i could grab it fell and went strait to the oil pan
needless to say i invented a few new words 
so in droping the pan to retreive the rod i discovered a broken motor mount, dont ya just love how a simple task can turn into a 2 day fiasco ima try to get it buttoned uptomorow and start it
needless to say i invented a few new words so in droping the pan to retreive the rod i discovered a broken motor mount, dont ya just love how a simple task can turn into a 2 day fiasco ima try to get it buttoned uptomorow and start it