Megasquirt odd missfire, hard to reproduce
12-04-17, 05:34 PM
#1
odd missfire, hard to reproduce
APB to the MS guru's out here, I am running MS2 setup with a stock FC ignition in my 86 rx7. I am having trouble re-producing this but I have logged the issue but I'm struggling to re-create it. Its like it fuel starves kind of misfire. It ran fine when parked but then after sitting for a few months this issue started to occur. Any help would be appreciated. Here is some background:
here is the link to the datalog:
https://drive.google.com/open?id=1Ih...KqrAU43PVpCFiw
- I have tried a new fuel filter and new spark plugs are on the way but cleaning the existing ones yielded no benefit to the situation.
- At first I tried adding a ground to the CAS and it seemed to help so then i tried cleaning the CAS body to ensure a better electrical ground but this had no affect either but i wasn't getting a sync loss error so it didnt seem to loose RPM signal.
- ECU connector is on tight, gave it the wiggle and screwdriver test.
- fuel pressure does not drop when misfire occurs
- typically re-created when trying to launch by raising the RPM or mid RPM range
- Lap times were roughly 45 seconds, when the misfire occurs you can see a lot of off/on of the TPS but RPM is low considering, most noticeable at start line or midway point.
here is the link to the datalog:
https://drive.google.com/open?id=1Ih...KqrAU43PVpCFiw
Last edited by fidelity101; 12-04-17 at 05:39 PM.
