pinging/chattering after cleaning out EGR

[87_crown_vic]

i always ran my timing at 12*, coolant lines at spacer disconnected and pinched off on the spacer and hoses bypassed, would pull EGR off since the passages can be blocked up, and when i had time once a year, i pulled upper intake to clean it . . the lower intake ports i would hit with carb cleaner and a small brass wire brush to clean it pretty good . . . car will blow black smoke from carbon getting blown out from cleaning and not really wanna start . . i would run for about 5 minutes to clear system and then do oil change to get the carb cleaner out of system that may have leaked past piston rings . . have o2 sensors been done at any point since they can cause a headache with fuel to air mix also

[porschpow]

the 02 sensors look new ( I am assuming they were changed). I didn't bypass the spacer but I would ntice from time to time in the seams I would see I tiny bit of gren ooze. I will bump it up to 12.

What is the max you could bump it to?

[gadget73]

the more you advance it, the more its liable to ping. Neither of mine like more than 10. Some will run fine at 16. Experiment.

[sly]

My 88 likes 14-15... but will do 20 with 89 octane. As stated, each car is a little different and will take a little more or less (some will actually want it to be 6-8 instead of 10).

[porschpow]

oh wow so you can actually go back to 6-8!

[sly]

You can go about +/- 20 at idle with the spout out and it will run to varying degrees of success.

[porschpow]

but the higher you go. (ex: 10 degrees going up to 14 degrees), the more potential for knocking?

[sly]

pretty much.

[slack]

I have mine running at 10* and use 87 octane. No pinging that I've noticed on mine.

[sly]

I use 87 and have mine set at 14-15*... no issues.

[porschpow]

impressive