Duraspark retarding during startup
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5th Wheeling
Joined: Nov 2015
Posts: 27
Likes: 0
Update on DSI module conundrum
I have the old box in and is firing up fine but the whole issue with the new box has been driving me nuts... To review- the 2 new boxes-Wells and a Motorcraft cause a struggled start as if out of time . Old box works fine. All boxes are Blue grommet.... "BUT"!!!!.. I HAVE DISCOVERED THAT THE ARRGEMENT\SEQUENCE OF THE COLORS OF THE WIRES COMING FROM THE BOXES ARE DIFFERENT. Old is red-wht-grn-blk-pur-or(from the outside edge) and the new is gr-blk-or-pur-red-wht.
I had a store credit band have ordered another new module with the same wire sequence aqs the old box...'l bet $5.00 that's it... why....I have no idea....To be continued
I had a store credit band have ordered another new module with the same wire sequence aqs the old box...'l bet $5.00 that's it... why....I have no idea....To be continued
pedant
Joined: Jan 2008
Posts: 23,576
Likes: 40
From: EXTREME southwest CT
There may well be a different pin out on the circuit board inside the module.
Electronics have come a LONG way since the mid 1970's when DuraSpark was introduced.
I think Reamer was going to open up some modules and compare the boards inside.
Electronics have come a LONG way since the mid 1970's when DuraSpark was introduced.
I think Reamer was going to open up some modules and compare the boards inside.
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5th Wheeling
Joined: Nov 2015
Posts: 27
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Reamer??? I would really like to see some internal working info posted. When this whole episode began I tried to find someone who could bench test a module and diagnose any issues. Hit a dead-end tracking down anybody.
FTE Legend
Joined: Nov 2015
Posts: 30,972
Likes: 4,130
From: Angier, NC
I wonder if Gary would check the 2 he has mounted, 1 is a back up, in big blue to see if the colors match up?
I know he posted he was having the same hard start hot and switch boxes and now ok.
Dave ----
I know he posted he was having the same hard start hot and switch boxes and now ok.
Dave ----
Cargo Master
Joined: Dec 2004
Posts: 3,362
Likes: 22
From: Florence, SC
5432 , nice looking truck, I also had the hard timing crank up ,but after a hot engine run.Go to store cut off truck get back in and it seemed like it wasn't cranking .This had been doing this sporadically ever since I switched to the duraspark 2.At first I dismissed it for not having the clutch depressed Etc... This was only after a hot engine run. Recently swapped the duraspark over to the msd 6a and problem solved ,Good luck TR
Something wasn't right, because that is not normal.
The MSD ignition doesn't do anything better than a properly functioning Dura Spark II ignition does.
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5th Wheeling
Joined: Nov 2015
Posts: 27
Likes: 0
Blue Gromet Wire sequence
I will be Dammed....The wire color sequence is the key. Wells and Mototrcraft/Autolite have a different wire sequence coming out of the box than the Standard unit has... I put in a new Standard unit and whamoooo..Just like downtown....Working like a champ...Old box must be a Standard...All are Blue grommet....
Now...Why?!!!!!!!
Now...Why?!!!!!!!
Cargo Master
Joined: Dec 2004
Posts: 3,362
Likes: 22
From: Florence, SC
I have noticed that the original Motorcraft Dura Spark II modules are much larger and heavier than the new Motorcraft modules Ford sells today.
In fact, the newer Motorcraft modules don't look all that much different than any of the aftermarket Chinese modules made today. They are all smaller and much lighter than the original modules.
In fact, the newer Motorcraft modules don't look all that much different than any of the aftermarket Chinese modules made today. They are all smaller and much lighter than the original modules.
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pedant
Joined: Jan 2008
Posts: 23,576
Likes: 40
From: EXTREME southwest CT
Circuits today are much more efficient and probably don't need as big a heat sink as they did in the mid 1970's.
IC's and surface mounted components are much more compact than they ever have been.
IC's and surface mounted components are much more compact than they ever have been.
FTE Legend
Joined: Jul 2010
Posts: 32,875
Likes: 48
From: Northeast, OK
Good question. I will check tomorrow.
Fleet Mechanic
Joined: Aug 2002
Posts: 1,568
Likes: 33
From: Swansea SC
Lariat , I agree with you on the MSD theory, my module was purchased at Rock auto , blue grommet(standard).After a good drive ,Ac on hotsummer temps( high humidity) ,cut off the truck get back in after 5 mins it would crank,then stop as if it was the timing(dragging ).Weird it didn't do this all the time .Since then I installed an electric fuel pump and the msd ignition .I also had a 1979 ford 150 that acted the same way (351m motor--).Same symptoms .Sure would like to see a schematic of the internals on a duraspark.TR
FTE Legend
Joined: Jul 2010
Posts: 32,875
Likes: 48
From: Northeast, OK
I have the old box in and is firing up fine but the whole issue with the new box has been driving me nuts... To review- the 2 new boxes-Wells and a Motorcraft cause a struggled start as if out of time . Old box works fine. All boxes are Blue grommet.... "BUT"!!!!.. I HAVE DISCOVERED THAT THE ARRGEMENT\SEQUENCE OF THE COLORS OF THE WIRES COMING FROM THE BOXES ARE DIFFERENT. Old is red-wht-grn-blk-pur-or(from the outside edge) and the new is gr-blk-or-pur-red-wht. I had a store credit band have ordered another new module with the same wire sequence aqs the old box...'l bet $5.00 that's it... why....I have no idea....To be continued
I had a store credit band have ordered another new module with the same wire sequence aqs the old box...'l bet $5.00 that's it... why....I have no idea....To be continuedHere's the one that retards the spark, and you can see that it carries no product name nor part #:
And, here's the one that doesn't retard the spark. But, while it doesn't have the same wire color sequence of the ones that do retard the spart, it doesn't have the same sequence as the one 54321toz reported of wht-red-pur-or-blk-gr (turned around to match the first one). Mine is red-wht-blk-gr-pur-or. And, as you can see, it says Duraspark and Motorcraft and carries the #E8PF-2A199-AA.
So, is red-wht-grn-blk-pur-or the sequence on all modules that retard the spark? Let's hear from others.
FTE Legend
Joined: Jul 2010
Posts: 32,875
Likes: 48
From: Northeast, OK
Guys - I'm wondering about testing the modules on the truck. As you can see here (Start, Ignition, & Carb Circuits - ???Gary's Garagemahal), it is the red/light blue wire from the stater relay/solenoid that triggers the box to retard. If you start the truck and then pull the wire off the starter relay/solenoid you can turn the key to the Start position w/o engaging the starter. But, that should retard the timing, which will slow the engine. If it doesn't slow the engine then it didn't retard the timing.
Thoughts?
Thoughts?
