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No Spark After Head Swap

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MagickMan0730

10+ Year Contributor
69
1
Aug 27, 2009
Ellenville, New_York
Ok so a while back I felt that I needed to swap my head because I was losing compression. I had figured it was a valve issue. So I just finished swapping over to a freshly rebuilt head after 800 miles. The block is still the same and everything looks good on the bottom end. I took my time and made sure everything was plugged up correctly and all bolts were tight. Everything came out good. (Or so I thought).:confused: I go to start her and take her for a drive when it doesn't happen. It cranks and cranks fast but doesn't turn over. I changed the plugs and wires. Nothing. Coil pack is brand new but changed it anyway just in case. Nothing. So I thought it must've been the Power Transistor. Changed that last night. NOTHING! CAS is good. My last thought is the Ecu. The main problem seems to be that she's not getting spark. I'm getting fuel at the rail and the timing is spot on. I am almost 100% positive I didn't miss any plugs or hoses. I went over it like 3 times. Everything was labeled and tagged. I am totally stumped. Can anybody help with any ideas of what this could be??:aha: Btw the motor is a 6-bolt with about 80k. Nothing was touched except the head. Help???
 
I do know after my rebuild I ran into this issue when I failed to hook up a ground wire that gets bolted onto the back of the intake manifold. Not saying it's your problem, but sometimes it's the simple shit that throws ya for a loop.
 
I was told this before as well. But I have a ground connected on the top of my intake manifold to the firewall. I have a JMFab IM so its a little different but nonetheless it IS grounded. I really hope its not my ECU because I didnt touch it at all and all my fuses are good...
 
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