ok guys here ya go!..any and all help is appreciated on this one....tuneport retro-fit from a 86 iroc to my 57 chevy i have a painless harness..everything hooked up correctly.....NO SPARK!
tested coil, esc, ignition module, coil pick up all test ok..... NO SPARK! 12 volts to bat side of distributor.... really pulling out my hair on this one..the donor car did run...called painless they dont get it either...any ideas? thanks!!
madmax57

 

Max57,

Just a few questions:

Do you have power at the distributor?

Are you using the ESC module and control?

Did you test the filter capacitor in the distributor for shorting?

 

Tuned Port*

 

have you double checked ALL your grounds? power is one thing but requires ground to complete the circuit

 

i have ground, 12 volts to bat... on distr. last night i tried a known good coil still no spark!..i have injector pulse.. i have ground at coil arrghhh!!! with coil cap off i have 12 volts into coil for sure...this sucks tonight i change module even tho it tested good.. yes i'm useing the esc and it starts another car so it is good help

 

the ecm/memcal has to have power/ground to function properly. if it doesn't you will not get spark/fuel. either it's not getting power or it may be bad? just throwing some idea in the air. maybe some can be of more help?

 

Have you tried starting after disconnecting the TACH lead from the distributor?

Du-rand, eh? Is Scottie Bryden still wearing that goofy pink suit? That boay ain't quite right....

 

vader, that scott bryden guy is a freak of nature if there ever was one lol!!
i dont have the tach hooked up, i dont get this one..
fuel pump runs fine..i have injector pulse,,, i have isolated the computer from distr.....the rotor is there i have a jumper with 12 volts at all time to bat..coil ground wire is there and ok as is button under coil.. had the ign module checked but i picked up one and i think i will replace it anyway...what is this filter you were talking about? thanks
max

 

ok i just switched cap rotor coil ign. module......from my running 87 vette the vette started right up with the stuff from my 57 and the 57 has no spark!! still...how can i check out the filter in the distr...? can i run without it? just to start it?

max

 

This is just a WAG but. . .

When I put my MSD 8570 (w/magnetic output) distributor into my SD 730 setup with the module mounted outside of the distributor (of the firewall actually) I had to ground the module where the screws hold it down, which is normally through the distributor plate. The wiring harness being plugged into it did not provide this ground path and it would not fire a bit.

Is it possible your wiring from the module inside distributor is not making it to ground? Easy to check, just test from the screw that holds down the module to a known good ground.

Like I said, just a guess.

 

Max57,

You just proven that the coil, cap, rotor, and module are viable. You obviously have a problem with either wiring or the pickup/reluctor assembly on the '86 engine. If you are able to measure reference pulses ('scope?) then those possibilities are diminished.

If you pop the cap, you should see a filter capacitor nestled under the rotor on an '86:

 

ok vader
i did check for injector pulse its there!! i have the filter out how do i check it ?
max