Could the ignitor be the cause of weak leading spark on the FD?
01-15-13, 12:53 PM
#1
Could the ignitor be the cause of weak leading spark on the FD?
Been trying to solve a problem which I originally thought was coming from my Haltech E8. It turns out I have very weak leading sparks. When compared to the ones comming from the trailing coils it is yellowish in color. Trailing sparks are blue and will jump over three inches to a ground point, but the leading bearly jumps 1/4 inch. The car will start on the trailings but revs slugish and sounds like its missing. When I attach the leading plug wires it makes no difference.I just swapped out the leading coil with another one, and no difference.
Can a failing ignitor be the cause. I would think an ignitor is either working or its not since its a switch. Also the coil harness is intact and has continuty between conectors.
The car was running really well before this problem began. One day I started it up from cold and it warmed up perfectly. Before I drove it I noticed it began to sound different.
Is it common for the FD ignitor to go out?
Can a failing ignitor be the cause. I would think an ignitor is either working or its not since its a switch. Also the coil harness is intact and has continuty between conectors.
The car was running really well before this problem began. One day I started it up from cold and it warmed up perfectly. Before I drove it I noticed it began to sound different.
Is it common for the FD ignitor to go out?
01-16-13, 09:40 PM
#4
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Wouldn't hurt to check the leading pick up and make sure it's clean and has a nice gap and the wires aren't bare and maybe touching somewhere ( have you had any of the dizzy wires unplugged lately for some kind of work? )
Check + wire going to coil and make sure it's getting at least a full 12 volts . then check the - side of the leading coil and make sure the ground is GOOD . If the + side of the leading coil doesn't get good voltage it won't charge the coil proper and if the - side of leading coil is not grounded well the coil won't get a chance to collapse proper also making for a poor lazy spark .
Its possible one of the wires are broken inside the insulation from vibration or what ever . you can just check that stuff with a simple test meter . Just a thought but it won't cost anything to check these things.
Gerald m.
Check + wire going to coil and make sure it's getting at least a full 12 volts . then check the - side of the leading coil and make sure the ground is GOOD . If the + side of the leading coil doesn't get good voltage it won't charge the coil proper and if the - side of leading coil is not grounded well the coil won't get a chance to collapse proper also making for a poor lazy spark .
Its possible one of the wires are broken inside the insulation from vibration or what ever . you can just check that stuff with a simple test meter . Just a thought but it won't cost anything to check these things.
Gerald m.
01-17-13, 02:06 PM
#5
Wouldn't hurt to check the leading pick up and make sure it's clean and has a nice gap and the wires aren't bare and maybe touching somewhere ( have you had any of the dizzy wires unplugged lately for some kind of work? )
Check + wire going to coil and make sure it's getting at least a full 12 volts . then check the - side of the leading coil and make sure the ground is GOOD . If the + side of the leading coil doesn't get good voltage it won't charge the coil proper and if the - side of leading coil is not grounded well the coil won't get a chance to collapse proper also making for a poor lazy spark .
Its possible one of the wires are broken inside the insulation from vibration or what ever . you can just check that stuff with a simple test meter . Just a thought but it won't cost anything to check these things.Gerald m.
Check + wire going to coil and make sure it's getting at least a full 12 volts . then check the - side of the leading coil and make sure the ground is GOOD . If the + side of the leading coil doesn't get good voltage it won't charge the coil proper and if the - side of leading coil is not grounded well the coil won't get a chance to collapse proper also making for a poor lazy spark .
Its possible one of the wires are broken inside the insulation from vibration or what ever . you can just check that stuff with a simple test meter . Just a thought but it won't cost anything to check these things.
Gerald m.
01-17-13, 03:46 PM
#6
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in my experience ignitors either work or they don't, however they can be intermittent. i have never seen an FD ignitor fail, they are one of the most robust parts on the car, the coils however do go bad.
new coils are black with nice shiny terminals
new coils are black with nice shiny terminals
01-17-13, 06:29 PM
#7
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( have you had any of the dizzy wires unplugged lately for some kind of work? ).
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01-19-13, 12:03 PM
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you should cut the Australians a break they are upside down....
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