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- #81
Put the timing at 7 kept the lines in “normal spot”. Ping mostly in 3-4th under loadI haven’t re-read this thread but if the EGR valve is inop but the distributor vacuum advancer vacuum hose is connected as per the factory — engine will ping like hell under certain RPMs & load.
Just for giggles sake, swap the vacuum hoses on the two vacuum advancer diaphragms on the distributor and take it for a test ride - after setting the timing back to 7° BTDC factory spec.
Does the pinging go away?
Switched the hoses got, pinging got significantly worse.
Now I still have the vacuum from the EGR top and the modulator capped