97 LT1 clicking noise when revving - LS1LT1 Forum : LT1, LS1, Camaro, Firebird, Trans Am, Engine Tech Forums

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Old 10-02-2012, 11:17 PM   #1
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Default 97 LT1 clicking noise when revving

i am still new to this site and dont know whether or not this is the right place to put this new thread, but I am in need of some help. i hate hearing any noise that does not belong to my car so this one is completly driving me nuts! I have a 1997 Pontiac Trans Am with the LT1 engine. What happened was I took the to the mechanic shop in order to get my intake manifold gasket replaced because it was leaking oil. They replaced and after I got it back from the i started hearing a clicking noise when i step on the gas. You can hear it pretty good inside the car and i am positive it is coming from the engine compartment. I took it back to them and they gave me the run around and didnt want to test drive to hear it and i left. The thing is you can not hear the clicking noise at idle, or while in park and revving the engine. Only when you are driving and stepping on the gas. A friend suggested to replace the header gaskets as that might be the cause, maybe a blown head gasket. I removed them and both looked in pretty bad shape so i replaced them with percys dead soft aluminum gaskets. I originally had the gaskets that came with pacesetter long tube (they suck!). Once i replaced them the noise continued, another friend said maybe becAuse the me hanic shop used regular oil instead of synthetic like i like to use. So i jus changed it back to mobile 1 5w-30 synthetic and still have thAt noise. Please help!
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Old 10-03-2012, 02:33 AM   #2
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Sounds like a exhaust leak. My TA was just doing that. Had to really listen for it at idle. Raise the rpms and it gets louder. Just needed to tighten the header bolts. Check where the header and y pipe meet and make sure those bolts are tight too.
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Old 10-03-2012, 07:14 AM   #3
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Oops, dropped the ball on that one, but it still wouldn't hurt to check your rocker adjustment out, just to make sure it's ok.

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Old 10-03-2012, 12:02 PM   #4
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Thanks alot to the both of you, I will first check my header bolts and the y pipe connections as that would be the easier way to go...if it continues i will check rocker arms thanks!
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Old 10-05-2012, 04:35 PM   #5
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im having the same problem with my car..
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Old 10-05-2012, 06:28 PM   #6
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Ok just a quick update here, I checked where the header and y pipe meets and tightened up all of the bolts to that. But the clicking noise continues, as for the header bolts I havent got around to checking that but I am not sure if I should because I literally just replaced the gaskets and tightened everything. As for the rocker arms, my mechanic told me when you take off the intake manifold you do not have to mess with the rocker arms.
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Old 10-05-2012, 08:10 PM   #7
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Even though you don't have to touch the rocker arms when you remove the intake the nuts CAN back off throwing them slightly out of adjustment. Name:  uploadfromtaptalk1349485688814.jpg
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Although mine ticked even at idle and eventually turned to a miss (more slung off on other side). This was after 1500 miles on a freshly built engine in the Camaro I had traded for.
Point being it doesn't hurt to check.
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Old 10-05-2012, 11:46 PM   #8
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Ya, if you ruled out exhaust leak I would start looking at the valvetrain like they said.
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Old 10-06-2012, 08:45 AM   #9
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That's it about troubleshooting, you can't assume anything is right. Just like when you have a problem and go to the doctor's office, they too must rule out all things that may cause your problem.
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Old 10-06-2012, 11:52 AM   #10
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Even if your header gaskets are new you should keep tightening them down every few days. Remember, start at the center and go out to get a nice seal. It takes a few months before everything settles in and the header bolts / studs stay in tightly. Even then, I always check mine once a month.

I would remove the the valve covers, very easy to do, just to rule it out.

There isn't much you can mess up when installing new intake gaskets. Only thing I can think of is leaving a part, tool, towel (R3DLT1), or something in the lifter valley.
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Old 10-11-2012, 09:24 PM   #11
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I also hear a loud clicking sound in the back of the drivers side on my motor. You can't miss it even at idle. Do you guys think its a loose rocker?
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Old 10-11-2012, 09:42 PM   #12
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I will update tomorrow night, me and my mad scientiest friend are going to operate on the block until we figure out whats making that noise, I thank everyone for their suggestions on what it could be
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Old 10-11-2012, 09:52 PM   #13
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It's hard to say without hearing the noise and using a steth to find it, but my LS1 had a clicking noise lately. It turned out to be caused by a small slit in the serpentine main belt. It only happened when the engine was off-idle. Of course, you don't have the same pump drive setup on an LT1, but thought I would mention it.
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Old 10-11-2012, 10:01 PM   #14
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The only way I could describe it is like a loud stop watch its constantly clicks. The motor was rebuilt and has around 1900 miles
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Old 10-11-2012, 10:15 PM   #15
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Quote:
Originally Posted by br97lt1ss View Post
The only way I could describe it is like a loud stop watch its constantly clicks. The motor was rebuilt and has around 1900 miles
Have you pulled that valve cover off yet?
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