7ormore

Well when we first got the 88 rx7 my friend put the battery in backwards and fried a bunch of stuff so i went and replaced the ecu, crank angle sensor, both the ignitors, and new plugs and wires and all new main fuses and the ones inside too and still no spark. I tested the resistance on the CAS, leading and trailing coils and they all were ok, the i tested to see if thier was 12 volts going to the coils and that was ok. I'm running out of things to check. It's getting fuel but when i take the spark plug out it doesn't spark. The battery is fully charged too. Any thing else that anyone could thing of to try would be great. Thanks

Aaron Cake

iTrader: (1)

Put an oscilloscope on the "trigger" lead on the leading coil...Do you see a square wave?

7ormore

sorry i don't think i have one of thoughs or i'm just not smart

7ormore

any idea where i could get one of thoughs for cheep

7ormore

any other ideas

rotoboy20

it would be nice if everyone had an oscilloscope. this guy dont, nor do i. you might wanna go to the FAQ, there are some links to the FSM there. there in should be SOmething on that. i wouldnt know from experience cause the damnd links dont work for me. anywho, check it out. wish i could help more...sorry dude.

-chris

RXciting

are you grounding the spark plus when you take it out of the engine.. if your not the shock tower is perfect

7ormore

Where is that located and does it matter if i use the leading or the trailing coil i read that it might.

Thanks

RXciting

where is what located??

7ormore

sorry, the shock tower

7ormore

you ment the strut tower right? or am i missing something