Ticking sound....
I've never had an issue with them until now. I bought these used though and had them sand blasted also so anything could have happened during shipping or refinishing.
I have actually heard of many headers leaking on that spot though. It was just hard to locate without the lift. Listening from the top it sounded like it was coming from the back of the head but as soon as you get under the car, it's quite clear where the sound was coming from. The imbalanced LTFT readings just confirmed an exhaust leak in my mind. Hopefully when I pull it off, it's at a spot that can be easily found and repaired.
EDIT> If anyone else has the infamous tick, they might want to check at the collectors!
EDIT> If anyone else has the infamous tick, they might want to check at the collectors!
I'm having a little trouble of my own. I got p1133 and p1153 codes one week after a full exhaust installation. These are insufficient cycling codes @ both front 02 sensors. I've learned that these could be caused by a few things, including an exhaust leak near the o2 sensors.
I think I do have a small exhaust leak. It's not making a ticking sound, it's more like a "wheep" sound that only happens under load. But I hear a very faint ticking on both sides when the car idles and I put my ear to the collector area. I wonder
I will have someone step on the gas so I can listen closely at the collectors.
I'm glad you found your fix! Sorry for rambling on....

I took the header to a local guy and we found the problem right away. Where they put it all together, there was NO weld on 1/4th of the collector inbetween the tubes. He's going to cut the collector off, reweld it and weld the collector back on.

I took the header to a local guy and we found the problem right away. Where they put it all together, there was NO weld on 1/4th of the collector inbetween the tubes. He's going to cut the collector off, reweld it and weld the collector back on.
And once the leak is fixed won't the fuel trims correct themselves?
The Best V8 Stories One Small Block at Time


