Really faint ticking while engine is cold what is it?
01-08-2009, 03:25 AM
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Faint ticking while engine is cold What could this be caused by? It sounds like an exhaust leak but it goes away once the engine warms up just a little. I have heard it could be the catalytic converters on the catted TSP y pipe also. The car has pacesetter long tubes and LM1 exhaust also.
Last edited by bigfatls6; 01-11-2009 at 08:42 AM.
01-08-2009, 03:26 PM
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The car is going in at the end of next week for a heads and cam swap and will get new header gaskets, New lifters and lifter trays. That should take care of it. You are right it does sound like a header gasket leaking. What ever it is it goes away once the exhaust warms up
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01-09-2009, 10:00 AM
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Still have the air pump? If the air pump is still there and wired up it will make a noise until the car is warm.
If you have headers that have the air tubes and it's in sometimes the valve goes bad and makes a "fluttering" sound kinda like what your describing.
If you don't still have the air pump I vote for exhaust leak.
If you have headers that have the air tubes and it's in sometimes the valve goes bad and makes a "fluttering" sound kinda like what your describing.
If you don't still have the air pump I vote for exhaust leak.
01-12-2009, 10:10 AM
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Ticking LS1 engines are very common,some have it, some don't. Mine has a ticking noise and comes and goes, i'm told not to worry about it by a GM certified mechanic.
01-12-2009, 10:19 AM
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Its not piston slap. piston slap sounds different more like a hollow knock. I had 2 1999 trans ams that both had the piston slap. My first 99 I bought brand new and it had the piston slap. This car doesn't have the piston slap for some reason
I know thats rare. The ticking is less noticeable than piston slap. I also noticed something else a little wierd my heads lights and dash lights would flicker like the volt. regulator is going bad on the alternator but I played with the wire on the back and that went away and then I can't even hear the ticking any more. Maybe I just havent noticed it I don't know I don't see wha tit would have to do with the alternator.
I know thats rare. The ticking is less noticeable than piston slap. I also noticed something else a little wierd my heads lights and dash lights would flicker like the volt. regulator is going bad on the alternator but I played with the wire on the back and that went away and then I can't even hear the ticking any more. Maybe I just havent noticed it I don't know I don't see wha tit would have to do with the alternator.
01-12-2009, 10:24 AM
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Its not piston slap. piston slap sounds different more like a hollow knock. I had 2 1999 trans ams that both had the piston slap. My first 99 I bought brand new and it had the piston slap. This car doesn't have the piston slap for some reason I know thats rare. The ticking is less noticeable than piston slap. I also noticed something else a little wierd my heads lights and dash lights would flicker like the volt. regulator is going bad on the alternator but I played with the wire on the back and that went away and then I can't even hear the ticking any more. Maybe I just havent noticed it I don't know I don't see wha tit would have to do with the alternator.
I know thats rare. The ticking is less noticeable than piston slap. I also noticed something else a little wierd my heads lights and dash lights would flicker like the volt. regulator is going bad on the alternator but I played with the wire on the back and that went away and then I can't even hear the ticking any more. Maybe I just havent noticed it I don't know I don't see wha tit would have to do with the alternator.