weak spark

[1972 dart]

hey you guys, i have a little problem with the dart.

there's only 6 volt on the coil when starting and a very weak spark,could it be the problem of no firing the cilinders?

do i need 12 volts when starting and about 9 when idling?

what could be the problem,i changed coils with no luck.....

thanks,

alfred

[bOb shingler]

resistor or ecu

[oldkimmer]

 .....or possibly a bad ign switch......kim.......

[1972 dart]

thank u guys,resistor is new..but could be out again...

ecu,i don't know...how to find out if the ecu is out,i do not have another one lying around?

alfred

[mopar_eric]

Is this a mopar distributor? what kinda ignition? Almost every mopar ignition I replace with MSD needs
1) very solid power and ground connections from the battery to the MSD
2) air gap reset to .008. It makes a huge difference in the signal. I had a dist that wouldn't even fire at like .015

HTH

[1972 dart]

Is this a mopar distributor? what kinda ignition? Almost every mopar ignition I replace with MSD needs
1) very solid power and ground connections from the battery to the MSD
2) air gap reset to .008. It makes a huge difference in the signal. I had a dist that wouldn't even fire at like .015

HTH

hi,it's a electronic ignition with a black ecu from mopar.

air gap is 008

it did run a week ago,so couldn't be a big problem i think

but i can't find it

[1972 dart]

ok,the dodge is running now,i tried another ecu.

can i use evry ecu,orange,gold?

i have a black ecu ( 5 pins ecu and 4 pin resistor)

alfred