Spark plug read request
Posted: Sat Aug 13, 22 11:50 am
Gents, need help with plug reading. Whatcha got.
Done about 50 miles on these new plugs after lots of standing idle tweaking. Mostly 1000-3500rpm local street driving with prob about x5-6 5sec bursts of ~50% throttle.
Initial timing @25 which is the best spot for vacuum and sweet idle without gas smell. All in @34/3000rpm with light spring on MSDdizzy- had to machine a stop bush to get the 9 degree centri advance range.
Still learning the AFR gauge but currently @13.6-14.1 @idle. Around 13.1-14 with light normal street driving @0-5% throttle. 15 and above on deceleration. I’m not sure on AFR for the short 3/4 throttle bursts - didn’t concentrate on the gauge
- but I’m sure my side eye saw around 13.0.
Done about 50 miles on these new plugs after lots of standing idle tweaking. Mostly 1000-3500rpm local street driving with prob about x5-6 5sec bursts of ~50% throttle.
Initial timing @25 which is the best spot for vacuum and sweet idle without gas smell. All in @34/3000rpm with light spring on MSDdizzy- had to machine a stop bush to get the 9 degree centri advance range.
Still learning the AFR gauge but currently @13.6-14.1 @idle. Around 13.1-14 with light normal street driving @0-5% throttle. 15 and above on deceleration. I’m not sure on AFR for the short 3/4 throttle bursts - didn’t concentrate on the gauge
- but I’m sure my side eye saw around 13.0.