| Go back to previous topic |
| Forum name | Engine Management Systems & Controllers |
| Topic subject | loud backfire/studdering under high loads w/MS spark |
| Topic URL | http://forums.2gnt.com/dcboard.php?az=show_topic&forum=54&topic_id=1184&mesg_id=1184 |
1184, loud backfire/studdering under high loads w/MS spark
Posted by rs-pssst, Dec-31-69 06:00 PM
I am running spark, using the timing map similar to ner's and under high loads on the engine and over 10psi, I get a backfire type studdering at about 5k and up -could this be the timing map or is it more likely plugs/wires or coil pack. I am running stock wires and coil pack and have my plugs gapped to .025. I have my afr right at 11.5
What sounds should i be listening for beside detonation when i am tuning the map and what adjustments need to made when those souds are present.
I am trying to eliminate whether it is software or hardware.
|