89 LX pinging from valve cover

Steves LX · January 3rd, 2007, 09:10 AM

I have a 89 LX that needs the the bottom reringed. I have plans to do this very soon. I have a blowby issue going on. However last night I took the car out and ran it a little hard a couple times and notice that I had this noise comeing from the engine everytrime I accelerated. It sound like a header leaking. When I arrived at home I lifted the hood and gave it some gas and the noise was actually coming from under my valve cover. My oil pressure was fine but my oil leve;l was down a couple of quarts. So after adding oil the noise pretty much went away unless I reved the motor it would knock right at the begining of the rev and then go away. But its coming from under the valve cover. So does this sound like push rods, valves or rockers? Any help would be appreciated.

Darrell · January 3rd, 2007, 10:44 AM

It might sound like its coming from the valve cover but it could be coming from the lower end. If you can find a mechanic's stethescope you can narrow it down a bit more. I've seen some rod knocks that I swore were valve train noises until I tore the motor apart.

FaStStAnG5-0 · January 3rd, 2007, 12:50 PM

yeah i had one that was similar to that too in my truck.. it turned out that a couple of the crank bearings were spun!! best get it checked out bro!!

rodenberg · January 3rd, 2007, 10:57 PM

you might not have enough oil to pump up the lifters. this would cause your rockers to be loose enough they would chater

January 3rd, 2007, 09:10 AM	#1
Steves LX Newbie Join Date: Nov 2006 Posts: 32	89 LX pinging from valve cover I have a 89 LX that needs the the bottom reringed. I have plans to do this very soon. I have a blowby issue going on. However last night I took the car out and ran it a little hard a couple times and notice that I had this noise comeing from the engine everytrime I accelerated. It sound like a header leaking. When I arrived at home I lifted the hood and gave it some gas and the noise was actually coming from under my valve cover. My oil pressure was fine but my oil leve;l was down a couple of quarts. So after adding oil the noise pretty much went away unless I reved the motor it would knock right at the begining of the rev and then go away. But its coming from under the valve cover. So does this sound like push rods, valves or rockers? Any help would be appreciated.

January 3rd, 2007, 10:44 AM	#2
Darrell MM Ninjas! 1990 Mustang LX 9.36@143 mph Join Date: Jan 2006 Location: Fond du Lac, Wisconsin Posts: 5,791	It might sound like its coming from the valve cover but it could be coming from the lower end. If you can find a mechanic's stethescope you can narrow it down a bit more. I've seen some rod knocks that I swore were valve train noises until I tore the motor apart. __________________ Racing in memory of Dave Bandt 11/19/69 - 3/23/08 "he's traded his wheels for wings" Professor of Natural Aspiration Thanks to: Artie at Trick Flow and Harold at Furo Racecraft http://www.myspace.com/odarrellrules

January 3rd, 2007, 12:50 PM	#3
FaStStAnG5-0 Hardcore Enthusiast Join Date: Jul 2006 Location: Mooresville, NC Posts: 1,152	yeah i had one that was similar to that too in my truck.. it turned out that a couple of the crank bearings were spun!! best get it checked out bro!! __________________ http://www.cardomain.com/ride/2461223 1994 GT: MSD 6AL, BBK O/R H-Pipe, Dynomax Race Bullet mufflers, 3:73 rear, Hurst Short Shifter, MAC cold air intake & much more coming soon!

January 3rd, 2007, 10:57 PM	#4
rodenberg Newbie Join Date: Jan 2007 Location: missouri Posts: 42	you might not have enough oil to pump up the lifters. this would cause your rockers to be loose enough they would chater __________________ bracket racing sucks

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