Engine noise - possible rod knock or bent push rod
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I have a 2002 Trans am with an Ls1 and 4L60e. Mods done are full exhaust, intake and torque converter.
I have about 110000 Miles on the motor, and about 500 miles ago it started making a faint noise at startup, but it would go away after five minutes, so I figured it was just piston slap. Now, for about the last 100 miles, its started making much more noise
, and the noise is there til about 2000-2500 rpm, then it goes away.
I have taken a video so that you can hear the noise and possible know something that I havent thought of.
://www.youtube.com/watch?v=Pkkh5YCcZLQ
I will be tearing into the motor this weekend to examine the pushrods.
Thanks for your help in advance.
I have about 110000 Miles on the motor, and about 500 miles ago it started making a faint noise at startup, but it would go away after five minutes, so I figured it was just piston slap. Now, for about the last 100 miles, its started making much more noise
![Bang Head](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_banghead.gif)
I have taken a video so that you can hear the noise and possible know something that I havent thought of.
I will be tearing into the motor this weekend to examine the pushrods.
Thanks for your help in advance.
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The noise has been fixed!
It wasnt a blown motor like I had thought, It turns out the Torque converter Bolts were Just loose. I tightened them up to spec, and the noise is gone.
It wasnt a blown motor like I had thought, It turns out the Torque converter Bolts were Just loose. I tightened them up to spec, and the noise is gone.
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Glad to hear it wasn't internal engine, I seen some people tear their whole engine apart to only find out later that it was a converter bolt.
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Yeah, i was convinced i was going to be dropping my motor and rebuilding... all 3 of my bolts were loose, but 1 of the bolts was backed out 3/16" and was hitting an engine Cover every time the engine turned over
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First I jacked the car up and put it on stands.
![](http://i100.photobucket.com/albums/m5/paintballdude25/CAM00381_zps4a941ac0.jpg)
these were the loose bolts. All were finger tight, and one was backed out pretty far, as you can tell from the pictures.
![](http://i100.photobucket.com/albums/m5/paintballdude25/CAM00385_zps6a48f59e.jpg)
![](http://i100.photobucket.com/albums/m5/paintballdude25/CAM00383_zpse4ba90d9.jpg)
![](http://i100.photobucket.com/albums/m5/paintballdude25/CAM00382_zps845fcf6f.jpg)
I applied lock tight and torqued all the bolts to 46 ft/lbs.
I also had to replace my starter since it was the original that came with the car, and it fell apart in my hands when i removed it.
No auto parts store in my area stocked a starter for a f body, so I bought one for a 2002 silverado with a 5.3L. Its tghe same starter, but the trucks have 2 long bolts, whereas the f-body has a long and short bolt.
Also, The oil all over my motor was from a broken oil pressure sending unit, and my aux trans cooler line blowing off while I was doing 70 mph.