Originally Posted By BSB67
Originally Posted By mickm
I have it farther down, in the 14+ range, just turns the screws farther out.

I'm just going to live with it. There are other things that need attention, this is just more of a nuisance than anything else.

I didn't expect it to take this much time and energy, but since it is what it is and doesn't harm anything, it's good enough.


If you have a large overlap cam you should be focusing on idle quality, not what an O2 meter is reading. It simply does not read right. If the O2 meter is reading 15:1 the the combustion charge AF ratio could still be far too rich. Some have reported as high as 18:1 meter reading at best idle quality w a big cam


iagree

Make it idle happy. The AFR will land where it lands.

Every time it misfires, all the O2 that didn't get used for combustion goes out the exhaust and a big overlap cam misfires A LOT at idle. That's why an engine idling pig rich can indicate 18:1 dead lean.

Kevin