Evil Cricket????
03-17-2006, 06:28 PM
#1
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Evil Cricket???? Ok guys I just did a cam sawp and changed my top tensioner pulley but it still sounds like I have an evil cricket chirping under my hood and ideas?
03-17-2006, 07:35 PM
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check the hose clamps on your upper water pump hose. last time i had my water pump off, my hose clamp didn't seal up properly and it would occasionally drip onto the belt.
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03-18-2006, 01:09 AM
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FWIW my pulley went out, idler pulley, after my second cam swap. I figured it out by taking the belt off and running it for a minute. Sound went away so I did the long socket wrench extention to the ear trick, and it was hummin bad. Replaced it.. and it was gone. The bearing would actually wiggle a bit when it was off the car.
03-18-2006, 03:03 PM
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Heres what happened to me, about 2k miles after my first cam swap I would get a chirping squeeling noise coming from what at first I thought was the front of the motor, so I purchased a new serpentine belt and a new ac belt. Went and changed out the serpentine belt, old one looked fine, fired it up and still squeeled. So I had the car on jackstands and this time I got underneath and completely disconnected both belts and fired it up and let it run for a few moments. The squeeing was still there, so I tried to source where the noise was coming from, I managed to crawl back and couldnt pin point it but it seemed to be coming from the end of the block where the clutch is.
So I figured it could possibly be a warped flywheel or something, the squeeling/chirping would happen when my oil temp was 150+ not when it was cold, and it only happened at low RPM's like around 1k-1500, if I increased the RPM's it would dissapear. It was very audible, almost like a demented blower whistle, because it was erratic.
Soooooo, I let it go and just turned up my radio for a few months, figured if it was the clutch, Id cure it when the clutch went out.
Eventually I got around to changing my valvetrain around, I ditched the crane gold rocker arms I had in conjunction with the 220/224 114 cam I had in there.
And after I put in my new cam (sig), the Squeeling/chirping completely went away.
I assumed the noise was coming from the old cam,possibly a warped journal or something but I inspected the old cam and the lobes and journals were fine, and free of wear. I dont know if it was reacting with the lifters, or what but thats where my whistling was coming from.
I essentially killed 3 birds with 1 stone in my recent cam swap, heres the whole story.
http://zo6vette.com/forums/showthread.php?t=94176
Others have also noticed a squeeling/whistling noise coming from their recently swapped cams as well, I would definetely look into this.
So I figured it could possibly be a warped flywheel or something, the squeeling/chirping would happen when my oil temp was 150+ not when it was cold, and it only happened at low RPM's like around 1k-1500, if I increased the RPM's it would dissapear. It was very audible, almost like a demented blower whistle, because it was erratic.
Soooooo, I let it go and just turned up my radio for a few months, figured if it was the clutch, Id cure it when the clutch went out.
Eventually I got around to changing my valvetrain around, I ditched the crane gold rocker arms I had in conjunction with the 220/224 114 cam I had in there.
And after I put in my new cam (sig), the Squeeling/chirping completely went away.
I assumed the noise was coming from the old cam,possibly a warped journal or something but I inspected the old cam and the lobes and journals were fine, and free of wear. I dont know if it was reacting with the lifters, or what but thats where my whistling was coming from.
I essentially killed 3 birds with 1 stone in my recent cam swap, heres the whole story.
http://zo6vette.com/forums/showthread.php?t=94176
Others have also noticed a squeeling/whistling noise coming from their recently swapped cams as well, I would definetely look into this.
03-18-2006, 10:40 PM
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Originally Posted by Scrappy
Who made your original cam?
Funny thing is a few futral F13 owners complained of the same thing that the F13 resolved in my car. Do a search, this isnt an isolated case, It may be the cam.
03-19-2006, 12:37 AM
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Well the noise starts as soon as I start the car so it seems to be a little different than what happened to you, but I really hope it's not the cam cuz I don't want to have to do another swap. And if it is the cam am I going to hurt anything besides my damn ears?
03-19-2006, 05:39 AM
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Check pages 4 and 5 on this thread, there are random replies of a similar squeeling noise coming from the CAM.
https://ls1tech.com/forums/showthrea...6&page=5&pp=10
As for eliminating the possibility of it being the belts, do as another member and I suggested and remove youre belt/belts and try and locate the source while its running for a few moments. I had both my belts off and I ran my motor for a good 2-3 minutes, you will be fine.
Do not go out and purchase any new belts yet, I did this initially as I immediately assumed it was the belt and I was out $50.
I dont know why this is happening, possibly a warped cam journal or maybe the back of the cam is rubbing something in the back of the motor. Because my chirping/squeeling was certainly coming from the back of the block, not the front, I figured this out when I had my car on jackstands, both belts off and I crawled back there.
I thank the lord its not doing it after my F13, that sound drove me nuts. It dynoed strong and still pulled strong with no other mechanical issues with the unwanted noise. And I didnt find any metal shavings on my drain plug so I dont think there was any significant wear if the cam was indeed rubbing something.
Good luck, this issue has happened to a few of us.
https://ls1tech.com/forums/showthrea...6&page=5&pp=10
As for eliminating the possibility of it being the belts, do as another member and I suggested and remove youre belt/belts and try and locate the source while its running for a few moments. I had both my belts off and I ran my motor for a good 2-3 minutes, you will be fine.
Do not go out and purchase any new belts yet, I did this initially as I immediately assumed it was the belt and I was out $50.
I dont know why this is happening, possibly a warped cam journal or maybe the back of the cam is rubbing something in the back of the motor. Because my chirping/squeeling was certainly coming from the back of the block, not the front, I figured this out when I had my car on jackstands, both belts off and I crawled back there.
I thank the lord its not doing it after my F13, that sound drove me nuts. It dynoed strong and still pulled strong with no other mechanical issues with the unwanted noise. And I didnt find any metal shavings on my drain plug so I dont think there was any significant wear if the cam was indeed rubbing something.
Good luck, this issue has happened to a few of us.
