Magnaflow Cats Make a Ticking Noise
02-27-2007, 11:04 PM
#1
Magnaflow Cats Make a Ticking Noise Ever since I got my headers/cats done there has been a faint ticking noise that sounds like its coming from the cats. A few months ago I did H/C and it got a lot louder. I assume this is because the exhaust got louder. The best way to describe the sound it is a ticking (kinda like piston slap but definitely coming from the cats) It gets louder when the car is hot and the speed of it increases with the RPMs. Do some cats just sound like that, or is this indicating a problem? 
02-27-2007, 11:22 PM
#2
That's probably just the mysterious LS1 tick. I've been fighting mine for years. I was convinced it was coming from the lifters, replaced them, still there. I was convinced it was coming from the plugs/wires, so I replaced them (about 5 times), still there. I was CONVINCED that it was coming from the exhaust, so I replaced everything from the flange gaskets to the tips, and it's still there.
02-28-2007, 08:08 PM
#5
Originally Posted by TheBlurLS1
That's probably just the mysterious LS1 tick. I've been fighting mine for years. I was convinced it was coming from the lifters, replaced them, still there. I was convinced it was coming from the plugs/wires, so I replaced them (about 5 times), still there. I was CONVINCED that it was coming from the exhaust, so I replaced everything from the flange gaskets to the tips, and it's still there.
I hope Im not heading down the same path as you. 
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03-07-2007, 11:20 PM
#8
I took the car to the local muffler shop and for $15 the guy spent about 30 mins fixing all the exhaust leaks. He said there was about 5 of them in the Y pipe connections to the cats and headers. The ticking noise decreased about 50% I can still hear it a little but its tolerable. I think the remaining noise might be coming from the headers not being sealed to the manifold.
The funny thing is that after he patched it up, the car idled a lot smoother. When I used to let the clutch out and coast the RPMs would sit at about 1050, now they sit at about 900. Im thinking maybe that had something to do with the O2 Sensors??
eh, whatever it was im happy now
The funny thing is that after he patched it up, the car idled a lot smoother. When I used to let the clutch out and coast the RPMs would sit at about 1050, now they sit at about 900. Im thinking maybe that had something to do with the O2 Sensors??
eh, whatever it was im happy now
