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I'm not running boost, it's n/a. It's 20 degrees BTDC at idle like it should be, but when I giving throttle the timing seemed to advance very inconstant and didn't seem right when I let off throttle. I'm no master with timing or a timing light. I do have a noise in the head somewhere, could be timing chain guide. The upper guide that's on the head under the valve cover broke while I was driving one day, and was getting thrown around by the cams. Could that have possible damaged something and causing that noise?
My car sat for about 8 hours and I started it, let it idle until operating temperature, and it drove home flawlessly, and the CEL didn't come on once. But when I got to my house I turned it off and started it again, and the CEL came on. I looked at all my plugs and they seem to be fine, gapped to spec, etc. I use premium gas so I'm doubting that it's an actual detonation knock.
Maybe my ecu is tripping out? Still stumped. Sometimes when I try to check the codes my ecu won't throw any. Not even a 55 (all systems go) or 34, what it normally throws. Almost everything is new. Maybe I have a short or bad ground somewhere?
Thanks for the reply!
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