HLAs or Knock?
#1
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HLAs or Knock?
I've been noticing a "tick" lately during idle and while driving. It comes and goes and increases frequency when driving (sounding like a card stuck in a bike wheel).
Here's a video of it:
http://www.youtube.com/v/HpLDoKog2UM
I've had noisey HLAs before but they always go away almost immediately. This seems louder and sticks around for a spell before going. I first noticed it at the last AutoX I was at. I was in the grid and my car was ticking very loud. Distracted me for the next run, and then went away.
I run 89 octane and my timing is 10 degrees.
I honestly am not sure what knock sounds like exactly (or ping for that matter) so I ask you guys.
Edit: looks like the video isn't done processing yet. =( It may not be available when you click it.
Here's a video of it:
http://www.youtube.com/v/HpLDoKog2UM
I've had noisey HLAs before but they always go away almost immediately. This seems louder and sticks around for a spell before going. I first noticed it at the last AutoX I was at. I was in the grid and my car was ticking very loud. Distracted me for the next run, and then went away.
I run 89 octane and my timing is 10 degrees.
I honestly am not sure what knock sounds like exactly (or ping for that matter) so I ask you guys.
Edit: looks like the video isn't done processing yet. =( It may not be available when you click it.
#2
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Ok, it's up now... apologies. (and after looking at some of the other videos it seems much less large metal hitting large metal and more clicky... so I'm not so sure it's knock at all)
#4
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Awesome, that's great news. Since I started futzing with my car I've been more and more sensitive to noises that I'm not sure about.
And thanks for the clarification. I knew knock was pre-ignition, but for some reason thought it cause something to hit. Doh.
So just so I have a reference, is this knock? Or is "rod knock" a different thing entirely?
http://www.youtube.com/watch?v=hMWwk47s0ak
And thanks for the clarification. I knew knock was pre-ignition, but for some reason thought it cause something to hit. Doh.
So just so I have a reference, is this knock? Or is "rod knock" a different thing entirely?
http://www.youtube.com/watch?v=hMWwk47s0ak
#6
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Sorry, I mean to say knock is detonation. Pre-ignition may lead to knock and engine knock may lead to pre-ignition.
knock = detonation. detonation is tiny explosions of unburned air/fuel when you dont want it. it's called knock cause you can hear it.
I highly doubt you'll knock at idle. What you are hearing is HLA noise, so of it sounds like injectors and electrical.
the second video posted is a fubarded engine with bent rods.
knock = detonation. detonation is tiny explosions of unburned air/fuel when you dont want it. it's called knock cause you can hear it.
I highly doubt you'll knock at idle. What you are hearing is HLA noise, so of it sounds like injectors and electrical.
the second video posted is a fubarded engine with bent rods.
#7
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Awesome, that's great news. Since I started futzing with my car I've been more and more sensitive to noises that I'm not sure about.
And thanks for the clarification. I knew knock was pre-ignition, but for some reason thought it cause something to hit. Doh.
So just so I have a reference, is this knock? Or is "rod knock" a different thing entirely?
http://www.youtube.com/watch?v=hMWwk47s0ak
And thanks for the clarification. I knew knock was pre-ignition, but for some reason thought it cause something to hit. Doh.
So just so I have a reference, is this knock? Or is "rod knock" a different thing entirely?
http://www.youtube.com/watch?v=hMWwk47s0ak
The first vid is HLA noise. Throw some ATF in the oil and put 30 miles or so on the car. ATF makes valve train squeaky clean. I had bad lifter noise and sludge when I bought my car. I put a whole quart of ATF in, drove it 40 miles home. Drained it, ran **** oil for 2000 miles, then switched to synthetic and everything under my valve cover looks good now.
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