Under load , spark wants to fail due to huge cylinder (combustion chamber) pressures, 95HP pressure. (this is even more true on turbocharged engine, needs very powerful spark)
this means narrow spark gaps work best, and lots of High Voltage to do that act.
for sure on this car with weak factory stock spark coil .
sadly no coils sold, like on 1995 back.
https://www.rockauto.com/en/catalog/geo,...butor,7108
misfire,: causes.
spark bad (can be scoped and proven)
too rich (under load I guess) one trick is that wot , wide open throttle , there is no 02 in uses it is OFF LINE on all hard accelerations and the MAF runs the SHOW.
weak compression on 1 cylinder would be super violent misfire.
the MAF can be tested easy with a volt meter, at output pin check volts, , keyon, then idle 800, and gunned hard, wot , parked, you can see it try to reach 3vdc out, or my scan tool , shows g/sec. output.
this means narrow spark gaps work best, and lots of High Voltage to do that act.
for sure on this car with weak factory stock spark coil .
sadly no coils sold, like on 1995 back.
https://www.rockauto.com/en/catalog/geo,...butor,7108
misfire,: causes.
spark bad (can be scoped and proven)
too rich (under load I guess) one trick is that wot , wide open throttle , there is no 02 in uses it is OFF LINE on all hard accelerations and the MAF runs the SHOW.
weak compression on 1 cylinder would be super violent misfire.
the MAF can be tested easy with a volt meter, at output pin check volts, , keyon, then idle 800, and gunned hard, wot , parked, you can see it try to reach 3vdc out, or my scan tool , shows g/sec. output.
http://www.fixkick.com