huskilvr wrote: I can't tell if I'm getting C02 odor over the smell of the gas tank.
I"m not trying to start anything - just trying to keep the record straight:
--- CO (carbon monoxide) is the exhaust emission of concern; not CO2 (carbon dioxide).
CO will kill you in minutes - the Immediately Dangerous to Life and Health concentration (IDLH) for CO is only 1,200 ppm.
Whereas the IDLH for CO2 is 40,000 ppm.
The major exposure difference is that even if there is adequate oxygen in the surrounding air, your body will absorb CO INSTEAD of the oxygen. Thus, you can still be poisoned from it in an oxygen-rich environment.
2ndly, pure CO is odorless. What you're smelling are the other emission gases... non-burned hydrocarbons.
Bottomline: Don't rely on odor as a estimated determinator of exhaust emission concentrations.
Unless you are exposed to LARGE amounts, CO2 will just make you tired. Remember, they dissolve CO2 into beer and soda pop, so this should indicate that it isn't too big of a deal.....
BarnieTrk
I know an exhaust leak isn't a good thing in this area, but if I drive the truck occasionally does is it cause much damage? Or do you think I could leave it?
) I know the studs at the manifold can be a pain, and even break off sometimes. Then you might have to bite the bullit and take off the manifolds, bring 'em to a machine shop and have new studs put in, buy new gaskets, etc. But then it will be done and not a worry anymore. 
