Ford 390 Problems...
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New User
Joined: Mar 2010
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thats alright, yea, my truck isn't equiped with the duraspark, just has the ignition hot wire that is resisted down to 6 volts in run position and bumps up to 12 volts when cranking ( For points system), should i be running a duraspark module with the electronic pickup dist. i am running?
Elder User
Joined: Jul 2003
Posts: 668
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[QUOTE=Bullitt390;8634418]You can't set initial timing to 30 degrees BTDC, no wonder the engine won't turn over.
Set it to -12 and be done with it. Hook up the white Duraspark wire to the "I" terminal of your starter solenoid and it will retard the ignition slightly while cranking.
Josh
Are you stating -12 degrees as in 12 degrees retarded as opposed to 12 degrees advanced? The "-" has me a little confused.
Rich
Set it to -12 and be done with it. Hook up the white Duraspark wire to the "I" terminal of your starter solenoid and it will retard the ignition slightly while cranking.
Josh
Are you stating -12 degrees as in 12 degrees retarded as opposed to 12 degrees advanced? The "-" has me a little confused.
Rich
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Joined: Aug 2001
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Remember:
Disconnect the vacuum advance and plug the port.
Set the initial timing with engine running at idle.
Re-connect the vacuum advance (to ported vacuum, not full manifold vacuum).
Adjust your idle
Burn rubber!
Josh
Senior User
Joined: Aug 2004
Posts: 463
Likes: 12
From: Arkansas
Yes -12 degrees BTDC which can also be written 12 degrees BTDC.
Remember:
Disconnect the vacuum advance and plug the port.
Set the initial timing with engine running at idle.
Re-connect the vacuum advance (to ported vacuum, not full manifold vacuum).
Adjust your idle
Burn rubber!
Josh
Remember:
Disconnect the vacuum advance and plug the port.
Set the initial timing with engine running at idle.
Re-connect the vacuum advance (to ported vacuum, not full manifold vacuum).
Adjust your idle
Burn rubber!
Josh
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New User
Joined: Mar 2010
Posts: 13
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not exactly sure, was in the truck when i bought it... its comfortable tho...
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no i could not get it to idle long enough to put a timing light on it.... longest i have gotten it to idle is 2 minutes, then it sorta acts like it loads up and dies... so i got a fuel pressure reg, to put on it just to make sure the stock fuel pump isn't over working the needle and seats in the new carb.
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Joined: Dec 2009
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From: Alberta, Canada
If i am not mistaken you are running a Accel coil.
That coil doesnt require a resistor. it should be at 12 v always.
This is not your problem but it could be robbing you of Spark.
and if your motor was to flood on final sparked stroke before you shut the truck off, in addition to your timing being slightly off starting it again would be a SOB.
This is a far off analization. but it could be your problem.
Any aftermarket coil that says 12V on the coil somewhere is to be wired to constant 12 volts.
The old coils were 6v probably because the internals were crappier than todays coils and couldn't hold up to 12v for extended periods.
Mabey not an issue on your truck but i would look into it.
Fixing this will also give you more power in your high Rpm's
That coil doesnt require a resistor. it should be at 12 v always.
This is not your problem but it could be robbing you of Spark.
and if your motor was to flood on final sparked stroke before you shut the truck off, in addition to your timing being slightly off starting it again would be a SOB.
This is a far off analization. but it could be your problem.
Any aftermarket coil that says 12V on the coil somewhere is to be wired to constant 12 volts.
The old coils were 6v probably because the internals were crappier than todays coils and couldn't hold up to 12v for extended periods.
Mabey not an issue on your truck but i would look into it.
Fixing this will also give you more power in your high Rpm's
Thread Starter
|
New User
Joined: Mar 2010
Posts: 13
Likes: 0
If i am not mistaken you are running a Accel coil.
That coil doesnt require a resistor. it should be at 12 v always.
This is not your problem but it could be robbing you of Spark.
and if your motor was to flood on final sparked stroke before you shut the truck off, in addition to your timing being slightly off starting it again would be a SOB.
This is a far off analization. but it could be your problem.
Any aftermarket coil that says 12V on the coil somewhere is to be wired to constant 12 volts.
The old coils were 6v probably because the internals were crappier than todays coils and couldn't hold up to 12v for extended periods.
Mabey not an issue on your truck but i would look into it.
Fixing this will also give you more power in your high Rpm's
That coil doesnt require a resistor. it should be at 12 v always.
This is not your problem but it could be robbing you of Spark.
and if your motor was to flood on final sparked stroke before you shut the truck off, in addition to your timing being slightly off starting it again would be a SOB.
This is a far off analization. but it could be your problem.
Any aftermarket coil that says 12V on the coil somewhere is to be wired to constant 12 volts.
The old coils were 6v probably because the internals were crappier than todays coils and couldn't hold up to 12v for extended periods.
Mabey not an issue on your truck but i would look into it.
Fixing this will also give you more power in your high Rpm's