ever hear a sound like this?

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Re: ever hear a sound like this? [Re: CHAPPER] #1186629 03/01/12 10:40 PM 03/01/12 10:40 PM
Joined: Oct 2003 Posts: 21,345 Marysville, O-H-I-O 70Cuda383 OP Too Many Posts
70Cuda383 OP Too Many Posts Joined: Oct 2003 Posts: 21,345 Marysville, O-H-I-O	Quote: Haven't commented on your problem,,just looking at the responses from time to time. Never actually had this problem or heard the noise in a 'running' engine,,but,,did have a friend have me come listen to an engine, on the assembly stand, no heads on it, and it made a squeeking sound once in awhile while being turned over by hand. I diagnosed it as a broken ring upon assembly. Turned out to be correct. Maybe when you are pulling plug wires and taking the pressure off that cylinder,,it is allowing the noise of a ring scrapeing the cylinder wall to go away..?? Maybe a leak-down test would show something ?? Just a thought...GOOD LUCK with your problem. Thanks. I guess it couldn't hurt to run a compression and leak down test on that cylinder, but I'm not sure that holding the exhaust valve closed would take any pressure off the rings... the sound was present with engine running and all 8 cylinders firing. sound was present with engine running and #5 fuel injector unplugged, effectively creating a "dead" cylinder. sound was still present after backing off the intake rocker, which I imagine, would have taken off ALL pressure from the rings, and actually put them into a massive negative pressure like when you downshift a manual transmission with a closed throttle. sound finally went away once the intake rocker was backed off and the intake valve not moving, and the exhaust valve backed off and not moving. came back with just the exhaust rocker tightened back down, again, no fuel, no air just a "dead cylinder" with the exhaust valve opening once every 4 strokes. but since I'll be pulling the intake, I might as well do a quick compression test, and a leak down. by the way, on a leak down, does a piston really have to be at TDC, or can you just keep the valves closed by removing the rocker arms? Photobucket sucks

Entire Thread
Subject	Posted By	Posted
ever hear a sound like this?	70Cuda383	02/26/12 09:29 PM
Re: ever hear a sound like this?	rickraw	02/26/12 10:03 PM
Re: ever hear a sound like this?	340B5	02/26/12 10:10 PM
Re: ever hear a sound like this?	chryco	02/26/12 10:15 PM
Re: ever hear a sound like this?	VernMotor	02/26/12 10:16 PM
Re: ever hear a sound like this?	SCATPACK 1	02/26/12 10:25 PM
Re: ever hear a sound like this?	emarine01	02/26/12 10:30 PM
Re: ever hear a sound like this?	70Cuda383	02/26/12 10:34 PM
Re: ever hear a sound like this?	VernMotor	02/26/12 10:42 PM
Re: ever hear a sound like this?	70Cuda383	02/26/12 10:44 PM
Re: ever hear a sound like this?	VernMotor	02/26/12 10:51 PM
Re: ever hear a sound like this?	70Cuda383	02/26/12 10:57 PM
Re: ever hear a sound like this?	VernMotor	02/26/12 11:18 PM
Re: ever hear a sound like this?	70Cuda383	02/26/12 11:39 PM
Re: ever hear a sound like this?	VernMotor	02/26/12 11:53 PM
Re: ever hear a sound like this?	moparacer	02/27/12 12:23 AM
Re: ever hear a sound like this?	emarine01	02/27/12 12:38 AM
Re: ever hear a sound like this?	70Cuda383	02/27/12 12:51 AM
Re: ever hear a sound like this?	theraif	02/27/12 12:55 AM
Re: ever hear a sound like this?	70Cuda383	02/27/12 01:20 AM
Re: ever hear a sound like this?	2QUICK4U	02/27/12 01:29 AM
Re: ever hear a sound like this?	70Cuda383	02/27/12 01:39 AM
Re: ever hear a sound like this?	Hot 340	02/27/12 01:49 AM
Re: ever hear a sound like this?	70Cuda383	02/27/12 01:50 AM
Re: ever hear a sound like this?	70Cuda383	02/27/12 08:34 PM
Re: ever hear a sound like this?	FlyFish	02/27/12 08:58 PM
Re: ever hear a sound like this?	70Cuda383	02/27/12 09:05 PM
Re: ever hear a sound like this?	70Cuda383	02/27/12 10:25 PM
Re: ever hear a sound like this?	dvw	02/27/12 11:57 PM
Re: ever hear a sound like this?	tubtar	02/28/12 02:18 AM
Re: ever hear a sound like this?	Challenger 1	02/28/12 01:57 PM
Re: ever hear a sound like this?	70Cuda383	02/28/12 01:58 PM
Re: ever hear a sound like this?	Mr.Yuck	02/28/12 02:23 PM
Re: ever hear a sound like this?	ZIPPY	02/28/12 03:27 PM
Re: ever hear a sound like this?	Moparnut426	02/28/12 04:14 PM
Re: ever hear a sound like this?	VernMotor	02/28/12 07:50 PM
Re: ever hear a sound like this?	Paul_Fancsali	02/28/12 10:14 PM
Re: ever hear a sound like this?	70Cuda383	02/28/12 11:02 PM
Re: ever hear a sound like this?	70Cuda383	02/28/12 11:05 PM
Re: ever hear a sound like this?	Challenger 1	02/29/12 01:20 PM
Re: ever hear a sound like this?	70Cuda383	02/29/12 01:59 PM
Re: ever hear a sound like this?	Challenger 1	02/29/12 02:02 PM
Re: ever hear a sound like this?	Moparnut426	02/29/12 05:03 PM
Re: ever hear a sound like this?	emarine01	02/29/12 05:26 PM
Re: ever hear a sound like this?	Moparnut426	02/29/12 05:45 PM
Re: ever hear a sound like this?	70Cuda383	02/29/12 05:55 PM
Re: ever hear a sound like this?	Challenger 1	02/29/12 06:03 PM
Re: ever hear a sound like this?	70Cuda383	02/29/12 06:25 PM
Re: ever hear a sound like this?	Moparnut426	02/29/12 07:31 PM
Re: ever hear a sound like this?	70Cuda383	02/29/12 07:37 PM
Re: ever hear a sound like this?	Moparnut426	02/29/12 08:50 PM
Re: ever hear a sound like this?	70Cuda383	02/29/12 11:51 PM
Re: ever hear a sound like this?	rickraw	03/01/12 12:11 AM
Re: ever hear a sound like this?	B_Body_Bob	03/01/12 12:32 AM
Re: ever hear a sound like this?	JohnRR	03/02/12 10:15 PM
Re: ever hear a sound like this?	70Cuda383	03/03/12 02:21 PM
Re: ever hear a sound like this?	rickraw	02/28/12 11:10 PM
Re: ever hear a sound like this?	70Cuda383	02/28/12 11:15 PM
Re: ever hear a sound like this?	Moparnut426	02/28/12 11:33 PM
Re: ever hear a sound like this?	barracudabob	02/29/12 12:19 AM
Re: ever hear a sound like this?	tboomer	02/29/12 12:32 AM
Re: ever hear a sound like this?	JD Dart	02/29/12 12:23 AM
Re: ever hear a sound like this?	hunterstroble	02/29/12 03:20 AM
Re: ever hear a sound like this?	dvw	02/29/12 12:25 AM
Re: ever hear a sound like this?	70Cuda383	02/29/12 12:31 AM
Re: ever hear a sound like this?	Cab_Burge	02/29/12 12:37 AM
Re: ever hear a sound like this?	70Cuda383	02/27/12 12:53 AM
Re: ever hear a sound like this?	Cab_Burge	02/27/12 12:50 AM
Re: ever hear a sound like this?	robnbird	02/26/12 10:39 PM
Re: ever hear a sound like this?	MoparDonny	03/01/12 12:47 AM
Re: ever hear a sound like this?	70Cuda383	03/01/12 09:39 PM
Re: ever hear a sound like this?	VernMotor	03/01/12 11:39 PM
Re: ever hear a sound like this?	Moparnut426	03/02/12 12:01 AM
Re: ever hear a sound like this?	70Cuda383	03/02/12 12:08 AM
Re: ever hear a sound like this?	rickraw	03/02/12 12:28 AM
Re: ever hear a sound like this?	CHAPPER	03/02/12 12:34 AM
Re: ever hear a sound like this?	70Cuda383	03/02/12 02:40 AM
Re: ever hear a sound like this?	Craig	03/02/12 02:58 PM
Re: ever hear a sound like this?	Moparnut426	03/02/12 04:17 PM
Re: ever hear a sound like this?	70Cuda383	03/02/12 06:47 PM
Re: ever hear a sound like this?	pittsburghracer	03/02/12 07:03 PM
Re: ever hear a sound like this?	Challenger 1	03/02/12 07:32 PM
Re: ever hear a sound like this?	FastmOp	03/02/12 07:55 PM
Re: ever hear a sound like this?	sixpackgut	03/02/12 08:00 PM
Re: ever hear a sound like this?	FlyFish	03/02/12 08:09 PM
Re: ever hear a sound like this?	70Cuda383	03/02/12 09:17 PM
Re: ever hear a sound like this?	Al_Alguire	03/02/12 09:49 PM
Re: ever hear a sound like this?	70Cuda383	03/02/12 09:54 PM
Re: ever hear a sound like this?	MattW	03/02/12 11:02 PM
Re: ever hear a sound like this?	70Cuda383	03/03/12 02:22 PM
Re: ever hear a sound like this?	MattW	03/03/12 02:40 PM
Re: ever hear a sound like this?	70Cuda383	03/03/12 02:59 PM
Re: ever hear a sound like this?	MattW	03/03/12 03:05 PM
Re: ever hear a sound like this?	70Cuda383	03/03/12 03:58 PM
Re: ever hear a sound like this?	sunroofgtx	03/04/12 06:12 AM
Re: ever hear a sound like this?	70Cuda383	03/04/12 06:37 AM
Re: ever hear a sound like this?	Leigh	03/04/12 02:26 PM
Re: ever hear a sound like this?	sunroofgtx	03/04/12 05:54 PM
Re: ever hear a sound like this?	Moparnut426	03/02/12 08:48 PM
Re: ever hear a sound like this?	Sport440	03/02/12 01:47 AM
Re: ever hear a sound like this?	cudaboy	03/02/12 01:51 AM
Re: ever hear a sound like this?	70Cuda383	03/02/12 02:30 AM
Re: ever hear a sound like this?	70Cuda383	03/02/12 02:31 AM
Re: ever hear a sound like this?	70Cuda383	03/02/12 02:28 AM

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