capacitive discharge ignition problems

[natedawghall]

I'm blowing switch boxes and can't figure out why. What kind of abuses other than a bad ground to the switch box can cause switch box failures.<br /><br />Thanks,<br /><br />Nathan Hall

 

[12Footer]

Re: capacitive discharge ignition problems

Bad connections.<br /><br />Open circuit (plug wire pulled off durring operation.<br /><br />Internal pack PCB corrosion due to moisture getting into the pack thru a crack or someplace.<br /><br />Open or intermittant coil windings.<br /><br />that's abt all i can think of (been up all night,double shifts draw vacumm).<br /><br />

 

[Trent]

Re: capacitive discharge ignition problems

Just to add to 12Footer's comments...<br /><br />Overcharging the battery will blow the packs.<br /><br />When an engine starts blowing power packs repeatedly, especially on the same cylinders, replace the ignition coils on those cylinders. The inductive kickback from a bad coil can destroy the packs, even if the coils check good with all known tests. A stator that test good can also be sending spike voltages to the packs causing them to fail repeatedly.