Hello Jason...
My carb has the 68 Jets in front and 71 jets on the sec. side..... the accelerator cam is the orange one..
and the PV is the 4.5 PV
While cruising the AFR is around 14.3 to 15.0 when I accelerate the AFR goes down to 13. - 13.2 WOT is 11.4
so ...I think that´s o.k.
If you have AFR 14 while cruising that is good.. why going richer ?? Only under Lload...you need a rich mixture
Greetings Juergen
Yeah fair enough I guess...some of the things I have read say that 14.XX is too lean but I guess at cruise it should be ok.
I think I was just surprised to see it on the AFR meter. I was more surprised about the pop through the carb as I got off the highway. I also had a past experience running very lean, pre AFR meter, had too much timing, and the car got super hot on the highway. Stopped, changed the timing (disconnected the VAC adv) and car cooled off and ran much better.
Maybe another drive is in order to see if it does it again.
If the porcelain on the plugs looks nearly white, it is screamin lean irregardless of what any gauge says.
I know reading the plug has its place...but I am not sure it works for a street car, to much part throttle driving that muddies the water so to speak.
I have also heard that todays fuels can cause problems reading the plugs.
I think at this point I will go by the AFR meter, BUT I could be swayed.
The other thing I may go back to is the timing...right now, my total timing comes in around 3000 rpm. My cruise rpm on the highway is around 2500 never much higher. Would the timing coming all in around cruising RMP make any difference?.
Jason
