[md93]

have u ever changed your timing? a lot of people do this and they dont really know what they are doing. u can actually lose power. but more importantly, the pressure in the engine and intake manifold changes because it fires earlier and if u throw the timing off too much without the right cams then, when the intake valve opens some off the pressure may still be trying to escape and since it cant go back out through the intake runner then it will eventually just blow the gasket.

 

[md93]

this is something u definately want to get fixed. blown intake manifold gaskets are rare (not really rare but not common) and can lead to some expensive repairs. u can lose coolant, coolant can get into your oil, u could have engine knock (detonation), etc...try to get it fixed. an exhaust leak should be easy to spot especially if its cold where u live.