when i start my truck up after sitting or in morning before i leave... it starts up but when i start to drive away it almost sounds like a locomotive type noise.. not really loud but like a consistent ticking/chugging noise until its warmed up.. once my truck has been driving for a while.. sound goes away.. any suggestions to what it may be?

 

Exhaust manifold leak. You need to replace your gaskets. The reason the sound goes away when it's warm, is because it expands enough to cover up the leak. I also have the same sound and need to replace them.

 

can anyone second this opinion? and about how much would gaskets cost to replace from a shop.. roughly

 

most exhaust systems do this when its cold, even stock. Mine does it and I have no leaks

 

should i have it checked... i mean to make sure? becuase I do smell some fumes also.... and its pretty noticable

 

if its completely gone when its warmed up, you dont have a leak...

 

it is not COMPLETELY gone.. you can still hear but BARELY...

 

Could be a broken stud, I have that and it sounds identicle to yours,

Could be a crack in the manifold,

Could be a bad gasket and is not completly sealing 100% even when warm.

 

if your smelling fumes in the cab then i would definetely get that fixed asap.my passenger side manifold had broken studs and had that annoying tick.

 

i have that same problem. but i found that some of the clamps that clamp pieces of muffler together. i probly did the exact thing not to do, but i took the clamps off.

 

I have the same thing. It will get louder and just be all the time. I plan on going to long tubes by next summer or if i can get a couple of weeks of work in a christmas and bring in a few grand i will spring for them for christmas/new years or spring break

 

What he said.

Mine ended up being broken manifold studs. Started out like yours, then got progressively worse.

Andy