ok so we have the car ready to start and we turn it over and nothing.so we check for spark and we have nothing.however we have 11.7 volts at the coil and also at the cap but there is no spark at all.we have tryed everything if anyone has any info please let me know.also the injector harness is only putting out 4 volts and it should be 12

 

I would have the tfi module checked. Try unplugging the spout connector.
If you have the fuel pump still factory wired, does it cycle when you turn the key and after you try to crank?

 

The injector harness will not read 12 volts. You need noid lights to test for injector fire. Be careful, I have toasted a ecu using a multimeter to test injector fire.

 

when you turn key on the aeromotive pump stays running but im not sure why it should cut off after about 3 seconds

also i tryed 2 tfi modules and still the same thing

 

oh ok i was told it should red 12 volts but all im getting is 4 volts from the injector harness

 

let me guess... you have a MSD dizzy? sounds like the PIP in the dizzy to me... MSD electronics are GARBAGE.... Check for nasty looking rust under the rotor in the dizzy....

 

you are 100% correct its msd i got it from someone off the forum and he said it was new.is there a way to test the pip?

 

I had a new 1, my car sits alot. It lasted lil over 2 yrs. It shit the bed with no warning at all.... Take the cap off, take the rotor off. Look for rust on the disc. You can rebuild the dizzy with new PIP and from napa for about 15$. Disconnect your MSD box. Check for voltage at coil. If you have voltage at coil. Next check for voltage on the red wire w/green trace going to dizzy plug. If you have those 2. And still no spark. Its your PIP. You will remove dizzy, remove gear ect and replace PIP. I will bet $$ its rusted to hell.

 

ok ill try that tomorrow thanks.

 

i got you cover i have my tfi-iv ignition tester ready for you tomorrow.hopefully this will help you out.if not i will try to get buy there some time this weekend and take a look at it.