Symptom. Misfires feed raw air and fuel to the cat, which does its damndest to convert it to carbon dioxide and water.
Symptom. Misfires feed raw air and fuel to the cat, which does its damndest to convert it to carbon dioxide and water.
Injectors were cool to the touch, so I think it's time for another lap of the ignition system.
Cap, rotor, wires, spark plugs all look good. Swapped ignition coils, no change. Swapped TFI modules, no change. Has seemingly good compression (just pushing a tapered snout into the spark plug holes) while hot, need a different adapter to get accurate numbers.
What else could this be? Timing retards itself while hot? Probably should check the timing and pull the distributor again.
At this point I'm thinking 100% rewire and a standalone ecu.
In reply to MrChaos :
If it comes to that I'm ditching the entire engine, the 2.3 has too many weak points to justify doing that work just to still worry about cracking cylinder heads, stripping oil pump drives, etc.
In reply to ¯\_(ツ)_/¯ :
Checked wiring- good as far as I can tell. Fuel pressure still good. Ignition timing doing what it should. Pulled valve cover, only thing that looks even a little wonky is that a couple of the spring retainers are sitting funny:
That's nothing, right? I even ran it with the cover off, everything is moving smoothly. Probably going to pull the fuel rail and fire all of the injectors to look for good pattern.
Are you trying to say all this time that you had an ignition problem and not a fuel injector problem? Yeah, glowing cat is ignition, not injection. That, BTW, is what burned my Esprit to the ground.
In reply to Dr. Hess :
I'm trying to say I still suspect it, but have no idea what it is. Every ignition component has been changed out with no result, and it has spark and proper timing at idle. I may need to take apart the advance mechanism and see what's going on there.
In reply to ¯\_(ツ)_/¯ :
Timing at idle is somewhat irrelevant. Timing full-in, and the advance curve are what’s important. Get those 2 things right & let initial timing end up wherever it does.
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