will not fire
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will not fire
Greetings,
am in need of help with my 1983 f250 4x4 5.8W M21 4spd
The truck was purchased from a buddy, and i have never heard it run, or even think about running...Truck turns over fine, had intermittent spark....
have replaced
coil
voltage regulator
ignition switch
ignition relay
EEC (unit on drivers fender)
Computer(under drivers seat)
magnetic crank pickup sensor (still shaking head)
i have 8volts at the coil in run, 12 on crank THERE IS NOTHING UNDER THE DIST CAP!!! no star, no points, no vacuum advance... NOTHING!!
this truck uses a "star" on the balancer, and a crankshaft position sensor....
Truck turns over fine, rotor turns fine, shorting test plug lead to ground and releasing does trigger coil to fire (sometimes). any help is greatly appreciated.
Thanks!
am in need of help with my 1983 f250 4x4 5.8W M21 4spd
The truck was purchased from a buddy, and i have never heard it run, or even think about running...Truck turns over fine, had intermittent spark....
have replaced
coil
voltage regulator
ignition switch
ignition relay
EEC (unit on drivers fender)
Computer(under drivers seat)
magnetic crank pickup sensor (still shaking head)
i have 8volts at the coil in run, 12 on crank THERE IS NOTHING UNDER THE DIST CAP!!! no star, no points, no vacuum advance... NOTHING!!
this truck uses a "star" on the balancer, and a crankshaft position sensor....
Truck turns over fine, rotor turns fine, shorting test plug lead to ground and releasing does trigger coil to fire (sometimes). any help is greatly appreciated.
Thanks!
Post Fiend
Joined: Dec 2007
Posts: 8,521
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From: Lost
I've seen that system. It was causing issues, so it went in the bin, and a standard DS2 ignition system went back in it's place. Been a few years, so I'm not 100% sure on the required steps.....
Of course, if you have to worry about emmission testing, this isn't really an option.
Of course, if you have to worry about emmission testing, this isn't really an option.
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No emissions, its a farm truck really... heck she dont even have any exhaust under her.... =)
i'm runing out of "normal options"
also have disconnected the neutral safety switch and she wont even turn over, ANY ideas i'd be willing to try
i'm runing out of "normal options"
also have disconnected the neutral safety switch and she wont even turn over, ANY ideas i'd be willing to try
pedant
Joined: Jan 2008
Posts: 23,576
Likes: 39
From: EXTREME southwest CT
Dizzy, coil, spark box and engine harness from a 351 of earlier vintage with the blue grommet DSII module.
The distributor shaft of a 302 is shorter and will not fit.
Don't really know what you'd need to jumper to get the computer working.
In fact I'd doubt you need it at all.
12V cranking and 8V run sounds right to me.
This keeps the coil cool but provides a hotter spark to start.
If you have spark, have you tried starting fluid?
Could just be a fuel issue, since it's been sitting so long.
The distributor shaft of a 302 is shorter and will not fit.
Don't really know what you'd need to jumper to get the computer working.
In fact I'd doubt you need it at all.
12V cranking and 8V run sounds right to me.
This keeps the coil cool but provides a hotter spark to start.
If you have spark, have you tried starting fluid?
Could just be a fuel issue, since it's been sitting so long.
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I have tried starting fluid, and no stumble or sputter at all.
I called the local parts depot, they have three options for less than 70 bucks.
your opinion please....
1. single vacuum no module
2. no vacuum, no module
3. dual vacuum no module
i'd just go get one and chunk it in, it has the original 2BBL, if i go vacuum, straight manifold, or where??
I called the local parts depot, they have three options for less than 70 bucks.
your opinion please....
1. single vacuum no module
2. no vacuum, no module
3. dual vacuum no module
i'd just go get one and chunk it in, it has the original 2BBL, if i go vacuum, straight manifold, or where??
Post Fiend
Joined: Nov 2005
Posts: 7,437
Likes: 4
From: Charles Town, W bygod Va
you want the distributor with the single vacuum advance, the module that mounts to the drivers inner fender, the coil and the wiring that connects them together.
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pedant
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From: EXTREME southwest CT
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i found an article that was to test the coil, and associated wiring, you shorted out the test plug on the drivers finder, and held it to ground ~1 sec, and release... each time i'd let go, well... 1 out of 10 would light up the timing light...
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I will not rule anything out at this point, i think there is three of them laying in the pile of parts on the floorboard....
i have followed this.. | Repair Guides | Dura Spark Electronic Ignition Systems | All Carbureted Engines | AutoZone.com
several times, and never really found any discrepancies. BUT, i will make time this weekend to try and go back through it again...
Thanks for following up! I cant wait to get her running!
i have followed this.. | Repair Guides | Dura Spark Electronic Ignition Systems | All Carbureted Engines | AutoZone.com
several times, and never really found any discrepancies. BUT, i will make time this weekend to try and go back through it again...
Thanks for following up! I cant wait to get her running!
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Try this one
nice, trashed link, sorry...
| Repair Guides | Dura Spark Electronic Ignition Systems | All Carbureted Engines | AutoZone.com
| Repair Guides | Dura Spark Electronic Ignition Systems | All Carbureted Engines | AutoZone.com
Last edited by ctubutis; Jan 28, 2011 at 07:26 AM. Reason: Fixed link
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