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Old 06-12-2014, 12:13 AM   #1
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Default Knock sensor sensitivity...outside noise?

Quick question- I finally have my new engine in and finally got around to plugging in the lappytoppy to check vitals while crusing around. I noticed knock voltage reading at idle and light cruise dithering between .02 and .06 (a couple jumps to .1 at idle). I don't remember having seen any such dithering on previous logging/monitoring before I replaced the engine.

However, I do know that I need to check and adjust the valves as they sound a bit like a NA 1.8 that's been run a bit hard. Is it possible that that valve train noise is being picked up by the knock sensor?

Lastly- I have a bit of a clearance issue with the exhaust somewhere under the car, could the vibrations, if at the right frequency, be picked up by the knock sensor?
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Old 06-12-2014, 12:25 AM   #2
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Remove the brace, adjust the valves.

See if the knock goes away?
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Old 06-12-2014, 12:35 AM   #3
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Well, yeah..I'd like to get the valves adjusted ASAP (btw Eddie has some shims we can use)
Ill get under the car tomorrow to adjust the exhaust.
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Old 06-12-2014, 01:02 AM   #4
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Doubt the valves ticking would set it off. Its gotta be stronger than that IMO.
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