I have just installed an OEM TBI fuel injection on the 250ci inline 6 in my '57 Chevy Suburban. I have modified the coil-in-cap HEI distributor to be run by the ECM.
I have gas at the throttle body but not much sparks.
I have pulled 3 spark plugs (1 at a time) to check for spark, cranking the engine, and:
1 spark plug has spark often, normally, it seems;
another spark plug had spark some times, like 4/5 sparks then none for a few seconds then again a few...
yet another spark plug had only one spark over the 10-20 seconds I was cranking the engine!
With my limited electrical knowledge, this does not make sense at all!
Plugs, plug wires, cap, rotor are new; coil is not new but worked a few months ago, module is junkyard used
Can anyone help?
Thanks!
Last edited by wave1957; 09/12/2010 1:03 AM.
