Ticking
03-27-2009, 04:13 PM
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Ticking Hey guys, I have a ticking noise on the motor, coming from the drivers side head area towards the front of the car. It started about 6 months ago. I can't for the life of me figure out what it is, I replaced valve springs with new patriots about 8 months ago, replaced my lifters with LS7's and LS2 lifter guides about a month ago. Also replaced exhaust manifold gaskets, spark plugs, and switched to LS6 PCV and valley cover the same time as the lifters.
The car is a 2000 Trans Am with close to 85,000 miles, installed a G5X2 cam with rollmaster double roller, patriot gold valve springs, 7.4 thunder hardened pushrods, all about 4 years ago. Put a new o-ring on the oil pump pickup when doing all of this as well. I'm sure there is other stuff I forgot too. The ticking seems to be louder on a cold start, but never fully goes away. Oil pressure is fine as well.
You guys have any idea what could be the source? Any info appreciated.
The car is a 2000 Trans Am with close to 85,000 miles, installed a G5X2 cam with rollmaster double roller, patriot gold valve springs, 7.4 thunder hardened pushrods, all about 4 years ago. Put a new o-ring on the oil pump pickup when doing all of this as well. I'm sure there is other stuff I forgot too. The ticking seems to be louder on a cold start, but never fully goes away. Oil pressure is fine as well.
You guys have any idea what could be the source? Any info appreciated.
03-29-2009, 09:57 AM
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Hey guys, I have a ticking noise on the motor, coming from the drivers side head area towards the front of the car. It started about 6 months ago. I can't for the life of me figure out what it is, I replaced valve springs with new patriots about 8 months ago, replaced my lifters with LS7's and LS2 lifter guides about a month ago. Also replaced exhaust manifold gaskets, spark plugs, and switched to LS6 PCV and valley cover the same time as the lifters.
The car is a 2000 Trans Am with close to 85,000 miles, installed a G5X2 cam with rollmaster double roller, patriot gold valve springs, 7.4 thunder hardened pushrods, all about 4 years ago. Put a new o-ring on the oil pump pickup when doing all of this as well. I'm sure there is other stuff I forgot too. The ticking seems to be louder on a cold start, but never fully goes away. Oil pressure is fine as well.
You guys have any idea what could be the source? Any info appreciated.
The car is a 2000 Trans Am with close to 85,000 miles, installed a G5X2 cam with rollmaster double roller, patriot gold valve springs, 7.4 thunder hardened pushrods, all about 4 years ago. Put a new o-ring on the oil pump pickup when doing all of this as well. I'm sure there is other stuff I forgot too. The ticking seems to be louder on a cold start, but never fully goes away. Oil pressure is fine as well.
You guys have any idea what could be the source? Any info appreciated.
Not sure the exact terminology, but prob the Evap valve mounted on the intake towards the front of the intake on the driver side.
They are known to make some noise
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03-29-2009, 10:31 AM
#9
Same problem here...mine is always quiet on startup but once i gets hot it starts ticking. Started after my h/c/i swap, since ive replaced the lifters, checked the header gaskets, and havent been able to find it. New shortblock is going in soon though, hopefully it goes away.
03-29-2009, 01:36 PM
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It's loud enough that I can distinctly notice it over my sewing machine valve train. When I replaced the lifters, I couldn't see any deep scores or damage on any of the stock lifters. Didn't think about the evap assembly, do you think it could be faulty, as in replacing the assembly could eliminate the sound?
03-29-2009, 03:18 PM
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See mine is sort of the opposite, I can't really hear it very well when driving or when the RPM's are up at all. It's loudest on a cold startup and tends to melllow out a little bit the warmer it gets.
Unplugged the evap solenoid, sound didn't change, so I'm guessing that's not it. I'm starting to think it may just be piston slap.
Unplugged the evap solenoid, sound didn't change, so I'm guessing that's not it. I'm starting to think it may just be piston slap.
03-29-2009, 04:01 PM
#13
Mine started after I started tuning my rebuilt engine. At that point all it had was a cam other than stock. I pulled the heads and put in some ls7 lifter along with some head work. No difference in the sound. The next thing I'm checking on is detonation from my tune since it only does it when under small load.
03-29-2009, 05:16 PM
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I've developed this problem over the last few months as well. I've had the cam in for about 4 years, and the patriot duals for about 2. It’s more like a rapid puffing sound rather than a ticking. I only hear it when I'm accelerating with the driver side window down next to a curb.
03-29-2009, 11:42 PM
#19
Mine was also doing that, replaced the lifters and it was better but still done it. I finally ignored what comp cam said about what pushrods to use and bought a checker and done some measuring. With what comp said to use I was only running about .030 or a little less preload on the lifters. Stock has almost .100 preload. After changing pushrod length to get me up to about .080 preload almost all the noise is gone. Have a little of the sewing machine sound but no ticking. It's normal for the sewing machine sound because of the crazy lobes that these cams have but the ticking will most always be fixed by the proper preload.
04-01-2009, 09:43 AM
#20
I pulled my pan and found that cylinder #1 had a "shifted" bearing. It didn't spin, just moved and wore funny. Probably from high RPM's. The crank journal is fine, it just wore the bearing to the copper. I'm going to polish my crank, get some new bolts, measure a few things and put it back together.