I was wondring, whay are signs of an exhuast manifold gasket problem?
recen;ty my car has been making loud exhuast noise when cold. It sounds like a leak in the exhuast but when it warms up the sound goes away.
Someone told me that the gasket is flexible due to temp readings so that when it get warm, the exhuast manifold gasket seals better and when it's cold, it doesn't seal as well hence the noise.
I know it can't be a cracked namifold or anuthing else cracked because the noise would be constant.