LOUD knock...VID
01-31-2009, 11:36 AM
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LOUD knock...VID Last night I discovered a really bad knock that seems like it is coming from the driver's side of my engine towards the back. Does it when car is warm or cold. You can really hear when the rpms are falling down after revving it a little bit. Sounds like it is coming from towards the top of the engine but I can't tell for sure. I'm not really sure what a bad lifter sounds like but just guessing this sounds like a worse knock. No SES light. I'm about 99.9% sure its not an exhaust leak....plus its very loud and more mechanical sounding. Also Im pretty sure its not a bent pushrod just because its such a "heavy" knock. Also, oil pressure doesnt seem to fluctuate excessively or anything.
Heres a video to hear the sound. Theres not much to see cause its dark outside but you can really hear it. (Im holding the camera basically right above the driver head right in front of the cowl.
http://i154.photobucket.com/player.s...y/100_0189.flv
I'm very concerned that I'm looking at a bad engine knock or maybe something like a spun bearing. Any input would be greatly appreciated.
UPDATE: Another thing, I went out this morning and it seems like it has quieted almost. Its not as prominent as it was last night. I listened to it from cold to running temp and now it seems it is more of a tick than a knock.
I attempted to long piece of alum curtain rod to see if I could pinpoint the noise like a stethoscope but the best I could do was determine the noise is coming from the back of the engine near the end of the header flange. Also, (trying to make sense of this but can't) I got the absolute most prominent tick when I would lay the rod on either of the fuel rails.
Heres a video to hear the sound. Theres not much to see cause its dark outside but you can really hear it. (Im holding the camera basically right above the driver head right in front of the cowl.
http://i154.photobucket.com/player.s...y/100_0189.flv
I'm very concerned that I'm looking at a bad engine knock or maybe something like a spun bearing. Any input would be greatly appreciated.
UPDATE: Another thing, I went out this morning and it seems like it has quieted almost. Its not as prominent as it was last night. I listened to it from cold to running temp and now it seems it is more of a tick than a knock.
I attempted to long piece of alum curtain rod to see if I could pinpoint the noise like a stethoscope but the best I could do was determine the noise is coming from the back of the engine near the end of the header flange. Also, (trying to make sense of this but can't) I got the absolute most prominent tick when I would lay the rod on either of the fuel rails.
Last edited by rhinohuey; 01-31-2009 at 12:13 PM.
02-26-2009, 09:18 AM
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man i think if i were you i would check the header gasket and spark plugs and pull the valve cover off and the rockers and check them and the pushrods. and if not there mabe a bent valve or spun bearing(rod) let us know what you find
