Cant figure out no spark

[jsf55]

Is your ignition switch cutting your coil feeds when in the start position, but giving you power in the run position, i find this mostly in reworked hot rod harnesses and it's usually at the ignition switch wiring

[jchristian24]

No. Since my original post I have dove deeper into things and I?m getting 11.8-12.5 on light green wire from crank, bounces 0-10 on blue signal wire and has constant ground on yellow. Cam gets 11.8-12.5 on red wire, nothing on pink low reference and brown signal wire jumps all over ranging from 0-9.8. My 12 Volts to pcm, coils, injectors, all pink key hots that power the entire system as well as crank and cam sensors is all consistent in run and start position. I have monitored all day for possible power drop while cranking and ran every diagnostic I know how or am capable of and the only thing that doesn?t add up is the cam signal. I feel like I should have something on the pink low reference wire.

[gtstorey]

No. Since my original post I have dove deeper into things and I?m getting 11.8-12.5 on light green wire from crank, bounces 0-10 on blue signal wire and has constant ground on yellow. Cam gets 11.8-12.5 on red wire, nothing on pink low reference and brown signal wire jumps all over ranging from 0-9.8. My 12 Volts to pcm, coils, injectors, all pink key hots that power the entire system as well as crank and cam sensors is all consistent in run and start position. I have monitored all day for possible power drop while cranking and ran every diagnostic I know how or am capable of and the only thing that doesn?t add up is the cam signal. I feel like I should have something on the pink low reference wire.

Need to include your diagram for those of us that don't have them memorized.

[edcmat-l1]

No. Since my original post I have dove deeper into things and I?m getting 11.8-12.5 on light green wire from crank, bounces 0-10 on blue signal wire and has constant ground on yellow. Cam gets 11.8-12.5 on red wire, nothing on pink low reference and brown signal wire jumps all over ranging from 0-9.8. My 12 Volts to pcm, coils, injectors, all pink key hots that power the entire system as well as crank and cam sensors is all consistent in run and start position. I have monitored all day for possible power drop while cranking and ran every diagnostic I know how or am capable of and the only thing that doesn?t add up is the cam signal. I feel like I should have something on the pink low reference wire.

If you have cranking RPM on your scanner, diagnosing anything to do with the crank sensor is a waste of time. Same with the cam sensor. They have nothing to do with making spark.

Same with powers and grounds to your PCM. If you have communication and a data stream you can assume it has good powers and grounds. You need to concentrate on power and ground to the coils.

This is why it's ridiculously difficult to try and coach someone through proper electrical diagnostics. Not understanding the basics.