- Dec 4, 2011
- 12,927
I got pinging in the 5.3 on my 07 Silverado.
Actually, have had it for a long time, just having never heard spark knock before I thought it was just some sheet metal lightly rattling someplace. Realized after a discussion with someone and then listening to a video of spark knock that geez, that's probably actually what I'm hearing. Fired up Torque, put a KR chart up, and while driving when I start hearing that little tinging the line in the chart starts bouncing and smooths to zero when it stops.
Seems to mostly do it under moderate engine load, say cruising the state route going up a hill. It also seems to run normally otherwise, not really noticing power drops even when the KR starts kicking in. Perhaps I'd only notice that if it was to drastically pull timing? Mostly seems to pull only a few degrees.
I just installed a catch can not that long ago, and I have seafoam in this tank of gas (not quite 1/2 way through it), and I was thinking of also getting seafoam spray to try cleaning the intake side of things, going to clean the MAF, and I'm also going to check the spark plugs. The truck had 128k when I bought it a year ago (now has 140,600), and the dealer had done a number of maintenance items to it before putting it on the lot, but I do not recall if spark plugs and/or wires were done or not.
Anything else worth checking that I may be missing?
It is worth noting I do have a canned 87 tune from a Diablosport inTune on it (primarily to disable AFM), but I've heard this sound long before I even got that.
Actually, have had it for a long time, just having never heard spark knock before I thought it was just some sheet metal lightly rattling someplace. Realized after a discussion with someone and then listening to a video of spark knock that geez, that's probably actually what I'm hearing. Fired up Torque, put a KR chart up, and while driving when I start hearing that little tinging the line in the chart starts bouncing and smooths to zero when it stops.
Seems to mostly do it under moderate engine load, say cruising the state route going up a hill. It also seems to run normally otherwise, not really noticing power drops even when the KR starts kicking in. Perhaps I'd only notice that if it was to drastically pull timing? Mostly seems to pull only a few degrees.
I just installed a catch can not that long ago, and I have seafoam in this tank of gas (not quite 1/2 way through it), and I was thinking of also getting seafoam spray to try cleaning the intake side of things, going to clean the MAF, and I'm also going to check the spark plugs. The truck had 128k when I bought it a year ago (now has 140,600), and the dealer had done a number of maintenance items to it before putting it on the lot, but I do not recall if spark plugs and/or wires were done or not.
Anything else worth checking that I may be missing?
It is worth noting I do have a canned 87 tune from a Diablosport inTune on it (primarily to disable AFM), but I've heard this sound long before I even got that.