Exhaust leaks

[EmmerichLSx]

I was getting DTC P0151 and had some exhaust leaks. So the first thing I did was fix those. I've gone through it twice now and visually everything looks good. Now they sound worse and the truck sputters and misses but no codes yet. I can't even drive it what happened?

[silverado_lover]

i dont know why you couldnt drive it but as for finding the leaks run your hand around the headers and the collectors. what kinda gaskets did you use? i have some aluminum gaskets that are like 1/4" thick on the block and some other aluminum gaskets for the collectors but i think theyre leaking a tad bit...i just havent checked. but summit racing has copper gaskets that have a raised edge on em that seals up the exhaust pretty well from what i hear

[darnie1987]

incase you dont like getting burned.... grab a rubber hose say about 2-3 foot long use it to listen with, u can hear leaks and wat not, its what i always use havent got burnt yet

[EmmerichLSx]

I've got a nice multi layer stainless gasket on the manifold on the turbo side. I even put some copper rtv around he gasket where the primarys are the second time around. I'll try the hose thing. I'm wondering if the manifold is cracked.