- Dec 14, 2017
- Reaction score
- Erie, Pennsylvania
- My Car
- 72 Mach 1 Q code. Now: 427C Titus, CHI top end, TKO 600, 4 wheel discs
This may help your plug reading 3pedals:Thanks, good idea on fresh gas, it's pretty low now and was planning to do full tank of 93 and got a bottle of techron fuel cleaner to "clean" the carb (not sure how much that will accomplish).
So, per the other suggestions here, I pulled a couple plugs, the #1 and #2. Was struggling to get more as I need a flex ratchet I guess to get at the plugs easier. They're Autolite 25, which seems like the correct temp rating.
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I know I should pull all of them, but these two look pretty similar. What's the diagnosis here?
I got a timing light and checked idle and it looked pretty low, like 4 degrees. So, from what I've read, it should be more like 12-16 degrees of initial timing at idle. So, that's one thing to try?
Also, I looked up the Demon carb port diagram and it looks like it's hooked up to manifold vacuum (second port from the corner), not ported. From what I've read, having higher initial advance and hooking up to ported is the better option for street drivability.
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So, I'm thinking I should swap to the ported outlet and advance the initial timing to 14 degrees or so. I've got a vacuum gauge coming so I will try to set to maximize the vacuum reading.
Also, just replace all the plugs. And get the new gas in there.