If he's got no spark then it's gotta be an electrical issue somewhere. Flooding it isn't going to cut off spark, neither should the MAF for that matter. I'd look for obvious electrical issues, then I would get the multi-meter out and go to town. Did you replace the coil packs before or after the issues started?

 

Make sure your wires are connected nice and tight also check your battery cables and the battery it self

 

when i bought the car i had the Primary coil go dead on me i replaced that with one from the junk yard cause lets Face it IT NOT F**** WORTH $900 from the dealer or even 500 from Autozone. i paid $40 from ecology! Phin ive checked checked and rechecked every wire that has to do with the coils the relays fuses and they are All within spec the coils wire from the ecu are all receiving signal from the CAS. how could the Batt /Cables Cause a No spark issue? im not a wiring guru so i have no idea how.

 

DC needs a ground to complete the circuit, so if something isn't properly grounded, even if you have power to that item it will not complete the circuit. Ground is as important as power itself. If you've tested each component and it's within spec, then my guess is you've got a wiring issue somewhere.



Trust me anyone who's owned a few RX-7's will tell you that they've had a ground cause them a headache on more then one occasion LOL It's one of the first things I do when I get a new RX... run fresh grounds.

 

How does a bad o2 cause a s13 not to start

 

ok i will replace the Batt cables and see if i get spark

 

Lets face it these cars are getting old even if we think there not, lol. Definately check the grounds, look to see if any of the copper in the wire has turned green under the insulation. Don't know why this happens, but its notorious on chevys like cavaliers and old pontiacs. I have replaced/repaired so many wiring harnesses on those. Yeah I know a bit off topic, but it might cheer you up. Even if the ground looks clean, clean it anyways and cover it in vasoline or battery terminal protector(in the spray can). Check your harness where it goes through the firewall. Might find a broken wire there. Good luck

 

A bad o2 can make it run extremely rich or extremely lean. Not the problem in this case, nor is it the maf, if either of those were correct it would be rich or lean in both rotors, not on rich one lean.



The leading plugs fire together and the trailings fire seperate(or that's how the fd does) so I'd check the trailing ignition circuit. I noticed you didn't mention the ignitor? The fb and fd have one so I'm assuming the fc has one as well. Have you checked that too? If not that could be causing your no fire condition.

 

How do i Check the Ignitor? i dont have the FSM handy anymore the pages Got thrown away.

 

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