A1
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| posted on 1/2/11 at 02:36 PM |
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electronic ignition thoughts
got a friend whos fitted elec ignition to his car, but its not running right, ie it dies all the time, then when you get it going it runs really
badly. im thinking its the spark timing thats way off, possibly the fueling a bit too.
am i on the right tracks?
cheers!
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flibble
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| posted on 1/2/11 at 02:42 PM |
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Probably, spark timing is definatly where I'd start to check 
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scudderfish
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| posted on 1/2/11 at 02:49 PM |
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Also check you've got spark at all cylinders, and they are sparking at the right point in the cycle.
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nick205
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| posted on 1/2/11 at 02:50 PM |
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quote: Originally posted by scudderfish
Also check you've got spark at all cylinders, and they are sparking at the right point in the cycle.
And in the right order, like 1342 etc.
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A1
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| posted on 1/2/11 at 02:54 PM |
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cheers, just want to make sure my thoughts are headed in a good direction!
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coyoteboy
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| posted on 1/2/11 at 02:57 PM |
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You'd need to know what electronic ignition system it was, how it was fired and how dwell/spark timing was controlled before you could make a
meaningful guess, but the above are a start - check all plugs fire, check they fire in the right order, then hook up a timing light and check they
fire at somewhere around 10btdc at idle (or whatever is spec'd in the manual). From that point on you're looking at intermitten problems
like poor wiring, wrong dwell, coil overheat due to poor settings if something like megajolt...
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MikeRJ
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| posted on 1/2/11 at 05:08 PM |
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quote: Originally posted by coyoteboy
Ycoil overheat due to poor settings if something like megajolt...
Megajolt doesn't have any dwell control, it's all handled by the EDIS module. Megasquirt is the system famous for blowing up coils and
drivers.
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coyoteboy
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| posted on 1/2/11 at 07:13 PM |
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Haven't looked into megajolt in much detail I admit.
MS does indeed destroy drivers/coils when the user can't figure out the settings 
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